ICE in rust nightly 2021-05-30

[insanitybit]

The code isn't correct anyways, but I did run across this. Minimized a bit, but it's still a fairly sizable example - sorry about that.

Code

https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=49ea5447e438ddb212b8dcbee034255b

Meta

rustc 1.54.0-nightly (c1e8f3a 2021-05-30)

Error output

   Compiling playground v0.0.1 (/playground)
error: internal compiler error: compiler/rustc_middle/src/ty/fold.rs:829:17: Trying to collect bound vars with a bound region: DebruijnIndex(0) BoundRegion { var: 0, kind: BrAnon(0) }

thread 'rustc' panicked at 'Box<Any>', compiler/rustc_errors/src/lib.rs:1005:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.54.0-nightly (c1e8f3a58 2021-05-30) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
thread 'rustc' panicked at 'substs of instance DefId(0:10 ~ playground[4a2c]::_Contains::does_contain) not normalized for codegen: [FileCap<FileOp::Write, FileResource::StaticPath("foobar")>, &C]', compiler/rustc_middle/src/ty/instance.rs:285:9
stack backtrace:
   0:     0x7f6ea8d7bf80 - std::backtrace_rs::backtrace::libunwind::trace::h1a39bd9a98540471
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
   1:     0x7f6ea8d7bf80 - std::backtrace_rs::backtrace::trace_unsynchronized::h21a1eeae7103ab3f
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f6ea8d7bf80 - std::sys_common::backtrace::_print_fmt::hc9ffbae9ed6a9871
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x7f6ea8d7bf80 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h17510753a34a3f09
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:46:22
   4:     0x7f6ea8de99ac - core::fmt::write::h1e5a1f350e43b10f
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/core/src/fmt/mod.rs:1110:17
   5:     0x7f6ea8d6d805 - std::io::Write::write_fmt::h06ec27c6d028baf1
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/io/mod.rs:1588:15
   6:     0x7f6ea8d7fddb - std::sys_common::backtrace::_print::h1a02603349b1dc60
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:49:5
   7:     0x7f6ea8d7fddb - std::sys_common::backtrace::print::h0fc317d31c48cd9b
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:36:9
   8:     0x7f6ea8d7fddb - std::panicking::default_hook::{{closure}}::ha522601c22d7057b
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:208:50
   9:     0x7f6ea8d7f8b1 - std::panicking::default_hook::hd50ab173af9a3ce8
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:225:9
  10:     0x7f6ea95509bd - rustc_driver::report_ice::h0bbc0ae77d597594
  11:     0x7f6ea8d805e6 - std::panicking::rust_panic_with_hook::hb5a01416e02405ad
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:626:17
  12:     0x7f6ea8d800c7 - std::panicking::begin_panic_handler::{{closure}}::hf1dda5d5c0706ee0
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:519:13
  13:     0x7f6ea8d7c45c - std::sys_common::backtrace::__rust_end_short_backtrace::h56c02e9609085b17
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:141:18
  14:     0x7f6ea8d80029 - rust_begin_unwind
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:515:5
  15:     0x7f6ea8d48eeb - std::panicking::begin_panic_fmt::h5889dddec113b3e8
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:457:5
  16:     0x7f6eaafc1223 - rustc_middle::ty::instance::Instance::new::h138b137268683e1e
  17:     0x7f6ea9aff205 - std::thread::local::LocalKey<T>::with::h5d9224abdd7920e1
  18:     0x7f6ea9b058b4 - std::thread::local::LocalKey<T>::with::h98ac41cac71185c2
  19:     0x7f6ea9b35cde - rustc_query_impl::make_query::resolve_instance::h6c2db3b7c4731c32
  20:     0x7f6ea9a754dd - rustc_query_system::query::plumbing::QueryState<D,K>::try_collect_active_jobs::h8d3183294409f20d
  21:     0x7f6ea9b4e7da - rustc_query_impl::Queries::try_collect_active_jobs::h804da0378b7580b3
  22:     0x7f6ea9c7ead7 - rustc_query_system::query::job::print_query_stack::hd56f847aa29e3347
  23:     0x7f6ea95fe637 - rustc_interface::interface::try_print_query_stack::hcd178fe26145ef9d
  24:     0x7f6ea9550d6d - rustc_driver::report_ice::h0bbc0ae77d597594
  25:     0x7f6ea8d805e6 - std::panicking::rust_panic_with_hook::hb5a01416e02405ad
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:626:17
  26:     0x7f6eaa52893b - std::panicking::begin_panic::{{closure}}::h79be31a52b7554ed
  27:     0x7f6eaa5288f6 - std::sys_common::backtrace::__rust_end_short_backtrace::h0d6d6b53a98843e6
  28:     0x7f6eaa52a0cf - std::panicking::begin_panic::h1d412c1e7c1dec3c
  29:     0x7f6eaa541a3d - std::panic::panic_any::h427710dcb10bbe92
  30:     0x7f6eaa54493a - rustc_errors::HandlerInner::bug::h54fd3663069746c7
  31:     0x7f6eaa5443e0 - rustc_errors::Handler::bug::h6fd29773c2809aef
  32:     0x7f6eaa4938e0 - rustc_middle::ty::context::tls::with_opt::h5d93e51ac4f84952
  33:     0x7f6eaa496d40 - rustc_middle::util::bug::opt_span_bug_fmt::h73ef8867dd647d6e
  34:     0x7f6eaa496cb6 - rustc_middle::util::bug::bug_fmt::h5eaf5bea31bbe7e0
  35:     0x7f6eaafe8e70 - <rustc_middle::ty::fold::BoundVarsCollector as rustc_middle::ty::fold::TypeVisitor>::visit_ty::h6514ebe90c448cdd
  36:     0x7f6eaa852986 - rustc_middle::ty::sty::Binder<T>::bind::h50c53be3fc93c400
  37:     0x7f6eaa84ffcb - rustc_ty_utils::instance::inner_resolve_instance::h2ee186f9093bf7d7
  38:     0x7f6eaa84f227 - rustc_ty_utils::instance::resolve_instance::h452e351b7015c1e3
  39:     0x7f6eaa963513 - rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::resolve_instance>::compute::h3a414191b883d966
  40:     0x7f6eaa94e2b8 - rustc_query_system::query::plumbing::get_query_impl::hf75519e5cd807995
  41:     0x7f6eaa98de2d - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::resolve_instance::h82667371ba59cd83
  42:     0x7f6eaafc2ffd - rustc_middle::ty::instance::Instance::resolve_opt_const_arg::ha0925e4a88f592f8
  43:     0x7f6eaaf7b31a - rustc_middle::mir::interpret::queries::<impl rustc_middle::ty::context::TyCtxt>::const_eval_resolve::h05ad8dfc76427d5b
  44:     0x7f6eaae7d570 - <rustc_trait_selection::traits::query::normalize::QueryNormalizer as rustc_middle::ty::fold::TypeFolder>::fold_const::h1a2b3db3741ddf78
  45:     0x7f6eab85c151 - <rustc_trait_selection::traits::query::normalize::QueryNormalizer as rustc_middle::ty::fold::TypeFolder>::fold_mir_const::hc529b8661d679324
  46:     0x7f6eab21c0f7 - <rustc_infer::infer::at::At as rustc_trait_selection::traits::query::normalize::AtExt>::normalize::hbb82211ffd579d79
  47:     0x7f6eab20ef21 - rustc_infer::infer::InferCtxtBuilder::enter::h2d501578ee6c38b9
  48:     0x7f6eab21bc32 - core::ops::function::FnOnce::call_once::h67853e98b8f1ca08
  49:     0x7f6eab4750a8 - rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::normalize_mir_const_after_erasing_regions>::compute::h013cf6812c6dfcde
  50:     0x7f6eab4132a4 - rustc_query_system::query::plumbing::get_query_impl::hd0fdeba8daa0e895
  51:     0x7f6eab4a7b39 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::normalize_mir_const_after_erasing_regions::hef60be0778070bfa
  52:     0x7f6eaabe30ed - rustc_middle::ty::normalize_erasing_regions::<impl rustc_middle::ty::context::TyCtxt>::normalize_erasing_regions::h8cd5a629f411350d
  53:     0x7f6eaabbc5d0 - rustc_mir::interpret::eval_context::InterpCx<M>::push_stack_frame::hb4d3d6e60f56f2cd
  54:     0x7f6eaabdd7ff - rustc_mir::interpret::terminator::<impl rustc_mir::interpret::eval_context::InterpCx<M>>::eval_fn_call::h18df32d0a18b92f7
  55:     0x7f6eaabcfdfb - rustc_mir::interpret::step::<impl rustc_mir::interpret::eval_context::InterpCx<M>>::run::h578d68801dae73c8
  56:     0x7f6eaaad8770 - rustc_mir::const_eval::eval_queries::eval_to_allocation_raw_provider::hc342a5cc80315017
  57:     0x7f6eaa962efd - rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::eval_to_allocation_raw>::compute::h50f34bc5c1b84fb8
  58:     0x7f6eaa933c64 - rustc_query_system::query::plumbing::get_query_impl::h82efa1836f4eb10a
  59:     0x7f6eaa98bdf7 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::eval_to_allocation_raw::h2b3ca26d4a0bfe39
  60:     0x7f6eaaad71aa - rustc_mir::const_eval::eval_queries::eval_to_const_value_raw_provider::h492a1f0908ef1033
  61:     0x7f6eaa962f3d - rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::eval_to_const_value_raw>::compute::hf332c6ae6cc62cca
  62:     0x7f6eaa93c6e5 - rustc_query_system::query::plumbing::get_query_impl::ha84d8dc8b8f75ed2
  63:     0x7f6eaa98bf17 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::eval_to_const_value_raw::h46d27616aa3d4e98
  64:     0x7f6eaaf64684 - rustc_middle::mir::interpret::queries::<impl rustc_middle::ty::context::TyCtxt>::const_eval_global_id::h5b31d85c4aaa4700
  65:     0x7f6eaaf7b35d - rustc_middle::mir::interpret::queries::<impl rustc_middle::ty::context::TyCtxt>::const_eval_resolve::h05ad8dfc76427d5b
  66:     0x7f6eab898056 - rustc_infer::infer::InferCtxt::const_eval_resolve::h8853853f26ced4a7
  67:     0x7f6eaa27d449 - rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations::{{closure}}::h31242c7bb950182e
  68:     0x7f6eaae7c8d9 - rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations::he0b9099f8a0ebc6e
  69:     0x7f6eaae9747f - rustc_data_structures::obligation_forest::ObligationForest<O>::process_obligations::h85e16c4356ccd540
  70:     0x7f6eaae7bc7b - <rustc_trait_selection::traits::fulfill::FulfillmentContext as rustc_infer::traits::engine::TraitEngine>::select_where_possible::h137caf5bfc9f4211
  71:     0x7f6eaa737ebc - rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_argument_types::hd9c65b7090c33843
  72:     0x7f6eaa71b67b - rustc_typeck::check::callee::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::confirm_builtin_call::h49cff8412dd49fd0
  73:     0x7f6eaa71a830 - rustc_typeck::check::callee::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_call::h9e8271b1bb5c17fc
  74:     0x7f6eaa7236d7 - rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_kind::h9a0610c69d1db80e
  75:     0x7f6eaa722da5 - rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation::hbec31136b572e013
  76:     0x7f6eaa73a276 - rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_stmt::hd9c9401fae4f4007
  77:     0x7f6eaa73ab0c - rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_block_with_expected::hec26ce1e195d7b11
  78:     0x7f6eaa722da5 - rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation::hbec31136b572e013
  79:     0x7f6eaa72e323 - rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_return_expr::hd1dd70742d727dbf
  80:     0x7f6eaa80da18 - rustc_typeck::check::check::check_fn::h6af6276ff63ec41c
  81:     0x7f6eaa7b343c - rustc_typeck::check::inherited::InheritedBuilder::enter::hf5a3faec0a6907b2
  82:     0x7f6eaa806088 - rustc_typeck::check::typeck::h896d419cb4279063
  83:     0x7f6eaa93ba8f - rustc_query_system::query::plumbing::get_query_impl::ha6569a99536f15ef
  84:     0x7f6eaa98bbad - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck::hc9871bea409f75ba
  85:     0x7f6eaa77f48a - rustc_middle::ty::<impl rustc_middle::ty::context::TyCtxt>::par_body_owners::h5653ee80ce8eeaf5
  86:     0x7f6eab314b0c - rustc_typeck::check::typeck_item_bodies::h84a3ebce4ed8af72
  87:     0x7f6eab400537 - rustc_query_system::query::plumbing::get_query_impl::h9d41a92686f2332d
  88:     0x7f6eab4a43c9 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck_item_bodies::hfc11308daf2482eb
  89:     0x7f6eab2bbfdf - rustc_session::utils::<impl rustc_session::session::Session>::time::h5e0207abea9a46ba
  90:     0x7f6eab343e2c - rustc_typeck::check_crate::h033d52ddf5a3c52c
  91:     0x7f6eaa6534dc - rustc_interface::passes::analysis::h44573dd1f435360d
  92:     0x7f6eab408c14 - rustc_query_system::query::plumbing::get_query_impl::hb28d9338aaa73db6
  93:     0x7f6eab4a2619 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis::h92a4884e0478500d
  94:     0x7f6eab081aa7 - rustc_interface::passes::QueryContext::enter::hb9b4b642821635fe
  95:     0x7f6eab05d6e3 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::h16bd07ff16fa3d4a
  96:     0x7f6eab059f0c - rustc_span::with_source_map::h6ee13da35fa72295
  97:     0x7f6eab05cf28 - scoped_tls::ScopedKey<T>::set::h9c6565b722913393
  98:     0x7f6eab081e4b - std::sys_common::backtrace::__rust_begin_short_backtrace::hdcf17779193f6d57
  99:     0x7f6eab058c15 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hf48084e1b458d4b2
 100:     0x7f6ea8d8cad7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf00ff0dfc0b9e39f
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/alloc/src/boxed.rs:1575:9
 101:     0x7f6ea8d8cad7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h236979b1b61b3517
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/alloc/src/boxed.rs:1575:9
 102:     0x7f6ea8d8cad7 - std::sys::unix::thread::Thread::new::thread_start::h8f357e546e4775fa
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys/unix/thread.rs:71:17
 103:     0x7f6ea8cc7609 - start_thread
 104:     0x7f6ea8bdb293 - clone
 105:                0x0 - <unknown>

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.54.0-nightly (c1e8f3a58 2021-05-30) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
end of query stack
thread panicked while panicking. aborting.
error: could not compile `playground`

Caused by:
  process didn't exit successfully: `rustc --crate-name playground --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 -C metadata=d5583dc9c61d0f13 -C extra-filename=-d5583dc9c61d0f13 --out-dir /playground/target/debug/deps -L dependency=/playground/target/debug/deps --extern addr2line=/playground/target/debug/deps/libaddr2line-ee0d9d4a76af11ea.rmeta --extern adler=/playground/target/debug/deps/libadler-b49c949e3504cbd1.rmeta --extern adler32=/playground/target/debug/deps/libadler32-d4247d4849a00fb6.rmeta --extern ahash=/playground/target/debug/deps/libahash-66e41c6e5122aadb.rmeta --extern aho_corasick=/playground/target/debug/deps/libaho_corasick-c6441250f4377f75.rmeta --extern ansi_term_0_11_0=/playground/target/debug/deps/libansi_term-120d85761b0feaf7.rmeta --extern ansi_term=/playground/target/debug/deps/libansi_term-ab35f8b11e59385a.rmeta --extern anyhow=/playground/target/debug/deps/libanyhow-179cdb76302d10b0.rmeta --extern approx=/playground/target/debug/deps/libapprox-190b3889ec54de9c.rmeta --extern arc_swap=/playground/target/debug/deps/libarc_swap-7b1a27cbfcae6908.rmeta --extern arrayvec=/playground/target/debug/deps/libarrayvec-ed5725d717896463.rmeta --extern async_trait=/playground/target/debug/deps/libasync_trait-9b53c0ce0d6bf428.so --extern atty=/playground/target/debug/deps/libatty-b32971181cd4632c.rmeta --extern autocfg=/playground/target/debug/deps/libautocfg-335ede5611a9b684.rmeta --extern backtrace=/playground/target/debug/deps/libbacktrace-038694a4f7fabb45.rmeta --extern base64=/playground/target/debug/deps/libbase64-c4895e085902010c.rmeta --extern bit_set=/playground/target/debug/deps/libbit_set-47a0d090fe1f7f69.rmeta --extern bit_vec=/playground/target/debug/deps/libbit_vec-d1b5bfc20fd2fdbc.rmeta --extern bitflags=/playground/target/debug/deps/libbitflags-a2155987696b8596.rmeta --extern block_buffer=/playground/target/debug/deps/libblock_buffer-cf569edb3edc0bc5.rmeta --extern bstr=/playground/target/debug/deps/libbstr-d6fef2b5ed7a6253.rmeta --extern bytemuck=/playground/target/debug/deps/libbytemuck-9cbbcec9795b0be3.rmeta --extern byteorder=/playground/target/debug/deps/libbyteorder-247b40861da05bec.rmeta --extern bytes=/playground/target/debug/deps/libbytes-fee841c20de076cb.rmeta --extern cc=/playground/target/debug/deps/libcc-14df8ee1f221c2e7.rmeta --extern cfg_if_0_1_10=/playground/target/debug/deps/libcfg_if-a42a72dabfa4a887.rmeta --extern cfg_if=/playground/target/debug/deps/libcfg_if-17db79e6160d9d60.rmeta --extern chrono=/playground/target/debug/deps/libchrono-3055731e32502d08.rmeta --extern clap=/playground/target/debug/deps/libclap-2d33e23686e77c52.rmeta --extern color_quant=/playground/target/debug/deps/libcolor_quant-18f74000246df249.rmeta --extern const_fn=/playground/target/debug/deps/libconst_fn-2fa43ad16cae7ca1.so --extern cpufeatures=/playground/target/debug/deps/libcpufeatures-83c3ca0f017c3e89.rmeta --extern crc32fast=/playground/target/debug/deps/libcrc32fast-11f74ee15174c644.rmeta --extern crossbeam=/playground/target/debug/deps/libcrossbeam-c6ea1577332ee86d.rmeta --extern crossbeam_channel=/playground/target/debug/deps/libcrossbeam_channel-cf2faca17e7aa8e0.rmeta --extern crossbeam_deque=/playground/target/debug/deps/libcrossbeam_deque-f4851f8a143ce40b.rmeta --extern crossbeam_epoch=/playground/target/debug/deps/libcrossbeam_epoch-28907527c93d5ffa.rmeta --extern crossbeam_queue=/playground/target/debug/deps/libcrossbeam_queue-508e25cb0c9b5c6e.rmeta --extern crossbeam_utils=/playground/target/debug/deps/libcrossbeam_utils-042ee9495f71bdfb.rmeta --extern crypto_mac=/playground/target/debug/deps/libcrypto_mac-c62c745d6784bc52.rmeta --extern csv=/playground/target/debug/deps/libcsv-a7bfd95643843dbe.rmeta --extern csv_core=/playground/target/debug/deps/libcsv_core-89157bb2fb151cdd.rmeta --extern data_encoding=/playground/target/debug/deps/libdata_encoding-5b6f22d0f4108c54.rmeta --extern deflate=/playground/target/debug/deps/libdeflate-e53f1b38507311f9.rmeta --extern derivative=/playground/target/debug/deps/libderivative-606320fe6b1cdefc.so --extern digest=/playground/target/debug/deps/libdigest-fb0e132aa354ba96.rmeta --extern dtoa=/playground/target/debug/deps/libdtoa-4c7fbf1ff0cbab74.rmeta --extern either=/playground/target/debug/deps/libeither-04371dfd35bf3584.rmeta --extern encoding_rs=/playground/target/debug/deps/libencoding_rs-1e774a9fa3beaffe.rmeta --extern env_logger=/playground/target/debug/deps/libenv_logger-e2cdfc5bfa4ca8d3.rmeta --extern error_chain=/playground/target/debug/deps/liberror_chain-210e48177c7db42f.rmeta --extern fallible_iterator=/playground/target/debug/deps/libfallible_iterator-ff9acd467715c624.rmeta --extern fallible_streaming_iterator=/playground/target/debug/deps/libfallible_streaming_iterator-af89121c1162058b.rmeta --extern filetime=/playground/target/debug/deps/libfiletime-3db6ab81dd6d75c0.rmeta --extern fixedbitset=/playground/target/debug/deps/libfixedbitset-7f130894b62c8660.rmeta --extern flate2=/playground/target/debug/deps/libflate2-2fdbab57365ff513.rmeta --extern fnv=/playground/target/debug/deps/libfnv-ae9dcfe01b70696a.rmeta --extern foreign_types=/playground/target/debug/deps/libforeign_types-35628d5e26d8374d.rmeta --extern foreign_types_shared=/playground/target/debug/deps/libforeign_types_shared-04972c5c102436b5.rmeta --extern form_urlencoded=/playground/target/debug/deps/libform_urlencoded-e91eb0906f17a107.rmeta --extern futf=/playground/target/debug/deps/libfutf-ab209591d3e97362.rmeta --extern futures=/playground/target/debug/deps/libfutures-3640da6c18eeac60.rmeta --extern futures_channel=/playground/target/debug/deps/libfutures_channel-697402c8a6d1b4d9.rmeta --extern futures_core=/playground/target/debug/deps/libfutures_core-91cc4549ca0472bf.rmeta --extern futures_executor=/playground/target/debug/deps/libfutures_executor-1919684d89f05f3b.rmeta --extern futures_io=/playground/target/debug/deps/libfutures_io-1c519c7af5f9be31.rmeta --extern futures_macro=/playground/target/debug/deps/libfutures_macro-98ca7b3d3a049c34.so --extern futures_sink=/playground/target/debug/deps/libfutures_sink-1ba616e92182ae88.rmeta --extern futures_task=/playground/target/debug/deps/libfutures_task-c10619735ffa0a4f.rmeta --extern futures_util=/playground/target/debug/deps/libfutures_util-8bb7d92340bb0033.rmeta --extern generic_array=/playground/target/debug/deps/libgeneric_array-ac53d730f67a9215.rmeta --extern getrandom_0_1_16=/playground/target/debug/deps/libgetrandom-dd734ec333646ec0.rmeta --extern getrandom=/playground/target/debug/deps/libgetrandom-953aad598d824cb7.rmeta --extern gif=/playground/target/debug/deps/libgif-5981fd6c37878d57.rmeta --extern gimli=/playground/target/debug/deps/libgimli-6cb0c61547c32c8f.rmeta --extern glob=/playground/target/debug/deps/libglob-8875c8c77f264e1f.rmeta --extern h2=/playground/target/debug/deps/libh2-04e37a8fa0f03808.rmeta --extern hashbrown_0_9_1=/playground/target/debug/deps/libhashbrown-b64880a240aa7322.rmeta --extern hashbrown=/playground/target/debug/deps/libhashbrown-4b9ac570b77fd59a.rmeta --extern hashlink=/playground/target/debug/deps/libhashlink-2df54f962698c5b5.rmeta --extern hmac=/playground/target/debug/deps/libhmac-6ca13de78761dcfa.rmeta --extern html5ever=/playground/target/debug/deps/libhtml5ever-fe07ebe884d52b30.rmeta --extern http=/playground/target/debug/deps/libhttp-6d4e9ea1f4436748.rmeta --extern http_body=/playground/target/debug/deps/libhttp_body-19f131530a31992a.rmeta --extern httparse=/playground/target/debug/deps/libhttparse-470041685c40f349.rmeta --extern httpdate=/playground/target/debug/deps/libhttpdate-3777d2580bf7b262.rmeta --extern humantime=/playground/target/debug/deps/libhumantime-2dac88ea32d7c5f9.rmeta --extern hyper=/playground/target/debug/deps/libhyper-269f946083df2091.rlib --extern hyper_tls=/playground/target/debug/deps/libhyper_tls-3cd96babba668b53.rmeta --extern idna=/playground/target/debug/deps/libidna-5189f56b88cf228a.rmeta --extern image=/playground/target/debug/deps/libimage-12c2fa3bf902c850.rmeta --extern indexmap=/playground/target/debug/deps/libindexmap-a16c9943b089e7da.rmeta --extern instant=/playground/target/debug/deps/libinstant-048283c91b125bac.rmeta --extern iovec=/playground/target/debug/deps/libiovec-20d7ac17ea53fe5d.rmeta --extern ipnet=/playground/target/debug/deps/libipnet-c9dd5fe28501a45f.rmeta --extern itertools=/playground/target/debug/deps/libitertools-83b02edb16ec9dc2.rmeta --extern itoa=/playground/target/debug/deps/libitoa-83e3755614d1c657.rmeta --extern jpeg_decoder=/playground/target/debug/deps/libjpeg_decoder-998a051a33d2a30b.rmeta --extern lazy_static=/playground/target/debug/deps/liblazy_static-735e050bd0c7e24f.rmeta --extern libc=/playground/target/debug/deps/liblibc-1995c28b8f2b0962.rmeta --extern libm=/playground/target/debug/deps/liblibm-cea705af515fc7b9.rmeta --extern libsqlite3_sys=/playground/target/debug/deps/liblibsqlite3_sys-aa8be5e8db948cf1.rmeta --extern linked_hash_map=/playground/target/debug/deps/liblinked_hash_map-de04d3a5c1d34737.rmeta --extern lock_api=/playground/target/debug/deps/liblock_api-ac13900cead869b4.rmeta --extern log=/playground/target/debug/deps/liblog-408df375a9649a3b.rmeta --extern log_mdc=/playground/target/debug/deps/liblog_mdc-99e505949276356c.rmeta --extern log4rs=/playground/target/debug/deps/liblog4rs-fc0ad27b59678119.rmeta --extern mac=/playground/target/debug/deps/libmac-e654eafe9d5122d7.rmeta --extern markup5ever=/playground/target/debug/deps/libmarkup5ever-5d4403d9e0000b42.rmeta --extern markup5ever_rcdom=/playground/target/debug/deps/libmarkup5ever_rcdom-83574fb059ebb9e9.rmeta --extern matches=/playground/target/debug/deps/libmatches-bd6291e3e71f7f58.rmeta --extern matrixmultiply=/playground/target/debug/deps/libmatrixmultiply-2815ae7c5268c707.rmeta --extern md5=/playground/target/debug/deps/libmd5-c688bc3f2ad8e1bf.rmeta --extern memchr=/playground/target/debug/deps/libmemchr-303ba0c6b7f69fdd.rmeta --extern memmap=/playground/target/debug/deps/libmemmap-75637b8d7b752bb8.rmeta --extern memoffset=/playground/target/debug/deps/libmemoffset-7bc0aaefb961dea4.rmeta --extern mime=/playground/target/debug/deps/libmime-b10d8882042d97b0.rmeta --extern miniz_oxide_0_3_7=/playground/target/debug/deps/libminiz_oxide-1d1d3f7f4239ae4c.rmeta --extern miniz_oxide=/playground/target/debug/deps/libminiz_oxide-e797ff84e041dd1b.rmeta --extern mio=/playground/target/debug/deps/libmio-4bc38476a11e445d.rmeta --extern nalgebra=/playground/target/debug/deps/libnalgebra-497ec3171c8a4d1d.rmeta --extern native_tls=/playground/target/debug/deps/libnative_tls-9894440be1f722c7.rmeta --extern ndarray=/playground/target/debug/deps/libndarray-9fb34296dc561b08.rmeta --extern net2=/playground/target/debug/deps/libnet2-e701ad3c61b0b028.rmeta --extern debug_unreachable=/playground/target/debug/deps/libdebug_unreachable-b62bf2bc851953e4.rmeta --extern num=/playground/target/debug/deps/libnum-310bd912008768ec.rmeta --extern num_bigint=/playground/target/debug/deps/libnum_bigint-f29aaa9fd78cd487.rmeta --extern num_complex_0_3_1=/playground/target/debug/deps/libnum_complex-980527fb46f49d6c.rmeta --extern num_complex=/playground/target/debug/deps/libnum_complex-c5a2adc8136581d0.rmeta --extern num_integer=/playground/target/debug/deps/libnum_integer-ef83eb595093d5c1.rmeta --extern num_iter=/playground/target/debug/deps/libnum_iter-26ef1d7d168b78fc.rmeta --extern num_rational_0_3_2=/playground/target/debug/deps/libnum_rational-7cc1ce30694fb776.rmeta --extern num_rational=/playground/target/debug/deps/libnum_rational-4f68421956e44075.rmeta --extern num_traits=/playground/target/debug/deps/libnum_traits-29185bbab3bdb97e.rmeta --extern num_cpus=/playground/target/debug/deps/libnum_cpus-5b99b8fc9a28fdc5.rmeta --extern object=/playground/target/debug/deps/libobject-b93a28bf81b69015.rmeta --extern once_cell=/playground/target/debug/deps/libonce_cell-17eb46c299237e16.rmeta --extern opaque_debug=/playground/target/debug/deps/libopaque_debug-0572f128331f44db.rmeta --extern openssl=/playground/target/debug/deps/libopenssl-efb98e29b5e5fba2.rmeta --extern openssl_probe=/playground/target/debug/deps/libopenssl_probe-686a8228f73d5587.rmeta --extern openssl_sys=/playground/target/debug/deps/libopenssl_sys-4045b399e7cdf3d3.rmeta --extern ordered_float=/playground/target/debug/deps/libordered_float-019dfbabae12313c.rmeta --extern parking_lot=/playground/target/debug/deps/libparking_lot-fbc04678a689e37a.rmeta --extern parking_lot_core=/playground/target/debug/deps/libparking_lot_core-4b82bbd1f7f9b70f.rmeta --extern paste=/playground/target/debug/deps/libpaste-00233cab4e8b72fc.so --extern percent_encoding=/playground/target/debug/deps/libpercent_encoding-6b4a80c4029ee4a3.rmeta --extern pest=/playground/target/debug/deps/libpest-921bca10ad4500d5.rmeta --extern petgraph=/playground/target/debug/deps/libpetgraph-062a231d714bf404.rmeta --extern phf=/playground/target/debug/deps/libphf-229c542ba338a49b.rmeta --extern phf_codegen=/playground/target/debug/deps/libphf_codegen-bdb4f021da5a033f.rmeta --extern phf_generator=/playground/target/debug/deps/libphf_generator-3536c6b907b70097.rmeta --extern phf_shared=/playground/target/debug/deps/libphf_shared-2a85a3479f3e9d7c.rmeta --extern pin_project=/playground/target/debug/deps/libpin_project-f77941bfb3338770.rmeta --extern pin_project_internal=/playground/target/debug/deps/libpin_project_internal-4dac01d9f797bd58.so --extern pin_project_lite=/playground/target/debug/deps/libpin_project_lite-4aca7f5ab6899e96.rmeta --extern pin_utils=/playground/target/debug/deps/libpin_utils-dd2961d584c22a9f.rmeta --extern pkg_config=/playground/target/debug/deps/libpkg_config-562f800da154de92.rmeta --extern png=/playground/target/debug/deps/libpng-cea4ce28892beca3.rmeta --extern postgres=/playground/target/debug/deps/libpostgres-0dbfa21c851ef125.rmeta --extern postgres_protocol=/playground/target/debug/deps/libpostgres_protocol-dc84516331d375dc.rmeta --extern postgres_types=/playground/target/debug/deps/libpostgres_types-d9c2dce66b67e3f4.rmeta --extern ppv_lite86=/playground/target/debug/deps/libppv_lite86-e926ed38ecbba29b.rmeta --extern precomputed_hash=/playground/target/debug/deps/libprecomputed_hash-c6d01971a34f5807.rmeta --extern proc_macro_hack=/playground/target/debug/deps/libproc_macro_hack-1fe68e267e98fed1.so --extern proc_macro_nested=/playground/target/debug/deps/libproc_macro_nested-c3e0e2e0e50d9cf6.rmeta --extern proc_macro2=/playground/target/debug/deps/libproc_macro2-171d29b015a25fed.rmeta --extern quick_error=/playground/target/debug/deps/libquick_error-73bf4d47b8e0946f.rmeta --extern quote=/playground/target/debug/deps/libquote-28f6da0b487d7867.rmeta --extern rand_0_7_3=/playground/target/debug/deps/librand-4bc4fa282dff2114.rmeta --extern rand=/playground/target/debug/deps/librand-57e804266b74ff6d.rmeta --extern rand_chacha_0_2_2=/playground/target/debug/deps/librand_chacha-b8619118511a1def.rmeta --extern rand_chacha=/playground/target/debug/deps/librand_chacha-fec8269fa383021e.rmeta --extern rand_core_0_5_1=/playground/target/debug/deps/librand_core-b7dc4e0d18959f21.rmeta --extern rand_core=/playground/target/debug/deps/librand_core-90c42f306c0a67c6.rmeta --extern rand_distr=/playground/target/debug/deps/librand_distr-fd8a48ab1041ab25.rmeta --extern rand_hc=/playground/target/debug/deps/librand_hc-184f8043827622bb.rmeta --extern rand_pcg=/playground/target/debug/deps/librand_pcg-c02b643b3c706d6d.rmeta --extern rawpointer=/playground/target/debug/deps/librawpointer-80c34ebe31e8881e.rmeta --extern rayon=/playground/target/debug/deps/librayon-efa02685d840aaa2.rmeta --extern rayon_core=/playground/target/debug/deps/librayon_core-47767e9c1bb1e123.rmeta --extern regex=/playground/target/debug/deps/libregex-a743d6793e59d4c0.rmeta --extern regex_automata=/playground/target/debug/deps/libregex_automata-02b61cebf24eb8c0.rmeta --extern regex_syntax=/playground/target/debug/deps/libregex_syntax-a3684af575b07253.rmeta --extern remove_dir_all=/playground/target/debug/deps/libremove_dir_all-5c0a87a169460981.rmeta --extern reqwest=/playground/target/debug/deps/libreqwest-eddd8d69dcb85115.rmeta --extern ring=/playground/target/debug/deps/libring-309f803389994ae1.rmeta --extern rusqlite=/playground/target/debug/deps/librusqlite-f61ee64936c66008.rmeta --extern rustc_demangle=/playground/target/debug/deps/librustc_demangle-9c9497fccfbeb6f4.rmeta --extern rustc_version=/playground/target/debug/deps/librustc_version-75e8a0114436076c.rmeta --extern ryu=/playground/target/debug/deps/libryu-fc722432573e8d7d.rmeta --extern same_file=/playground/target/debug/deps/libsame_file-aeaece771fe5a4c2.rmeta --extern scoped_threadpool=/playground/target/debug/deps/libscoped_threadpool-c6d356f1e1f61de2.rmeta --extern scopeguard=/playground/target/debug/deps/libscopeguard-a0d059c36fcc038c.rmeta --extern select=/playground/target/debug/deps/libselect-ff6802aec982cf06.rmeta --extern semver_0_11_0=/playground/target/debug/deps/libsemver-a62cee498f3c98c6.rmeta --extern semver=/playground/target/debug/deps/libsemver-89ee22c77159f823.rmeta --extern semver_parser=/playground/target/debug/deps/libsemver_parser-f4ec13d2daacd2c2.rmeta --extern serde=/playground/target/debug/deps/libserde-3be3aabe22700213.rmeta --extern serde_value=/playground/target/debug/deps/libserde_value-1c51d967072b1146.rmeta --extern serde_derive=/playground/target/debug/deps/libserde_derive-c418fc817a4e665f.so --extern serde_json=/playground/target/debug/deps/libserde_json-11ef87148e2682c3.rmeta --extern serde_urlencoded=/playground/target/debug/deps/libserde_urlencoded-4801cebf46d8a639.rmeta --extern serde_yaml=/playground/target/debug/deps/libserde_yaml-8e97ddd36fcbdb88.rmeta --extern sha2=/playground/target/debug/deps/libsha2-480edd035d499151.rmeta --extern simba=/playground/target/debug/deps/libsimba-5ad51f737fc567e7.rmeta --extern siphasher=/playground/target/debug/deps/libsiphasher-0b689d4e61ff3bad.rmeta --extern slab=/playground/target/debug/deps/libslab-8360eda8f600df05.rmeta --extern smallvec=/playground/target/debug/deps/libsmallvec-9e48c7819f40ec21.rmeta --extern smawk=/playground/target/debug/deps/libsmawk-8e38b6e5a5778769.rmeta --extern socket2=/playground/target/debug/deps/libsocket2-0838fcc7aeaf3135.rmeta --extern spin=/playground/target/debug/deps/libspin-459161897768fba8.rmeta --extern standback=/playground/target/debug/deps/libstandback-766c95787038fe25.rmeta --extern string_cache=/playground/target/debug/deps/libstring_cache-bbb6e0d504d96d08.rmeta --extern string_cache_codegen=/playground/target/debug/deps/libstring_cache_codegen-7d8e96147bf05d1b.rmeta --extern stringprep=/playground/target/debug/deps/libstringprep-28c2833df3cff0ef.rmeta --extern strsim_0_8_0=/playground/target/debug/deps/libstrsim-1094d6105a6b9102.rmeta --extern strsim=/playground/target/debug/deps/libstrsim-596fcd52b29ab067.rmeta --extern subtle=/playground/target/debug/deps/libsubtle-9abff15ff12775b5.rmeta --extern syn=/playground/target/debug/deps/libsyn-9d9f6aef6969da15.rmeta --extern synstructure=/playground/target/debug/deps/libsynstructure-7579161d5937eb71.rmeta --extern tar=/playground/target/debug/deps/libtar-5b795d685e9295e6.rmeta --extern tempfile=/playground/target/debug/deps/libtempfile-a887fbeb3c565c67.rmeta --extern tendril=/playground/target/debug/deps/libtendril-0de8141ddc771892.rmeta --extern termcolor=/playground/target/debug/deps/libtermcolor-46403bcbadff7ce9.rmeta --extern textwrap_0_11_0=/playground/target/debug/deps/libtextwrap-34d11634d35d2890.rmeta --extern textwrap=/playground/target/debug/deps/libtextwrap-9cac5c85790b3b1f.rmeta --extern thiserror=/playground/target/debug/deps/libthiserror-385b7d90f4c0e299.rmeta --extern thiserror_impl=/playground/target/debug/deps/libthiserror_impl-a1ce8d13d7bf50de.so --extern thread_id=/playground/target/debug/deps/libthread_id-7fe87ffdec07bebf.rmeta --extern thread_local=/playground/target/debug/deps/libthread_local-c41cf3494ad4d6ea.rmeta --extern threadpool=/playground/target/debug/deps/libthreadpool-1caecdbf14adddfa.rmeta --extern tiff=/playground/target/debug/deps/libtiff-1cd50ca84da2362a.rmeta --extern time_0_1_44=/playground/target/debug/deps/libtime-7db81ef2db6e706c.rmeta --extern time=/playground/target/debug/deps/libtime-469cbffb33911a86.rmeta --extern time_macros=/playground/target/debug/deps/libtime_macros-e01e99c658446be3.rmeta --extern time_macros_impl=/playground/target/debug/deps/libtime_macros_impl-056a36a6471c9fcb.so --extern tinyvec=/playground/target/debug/deps/libtinyvec-d5d38abfbdb27dc7.rmeta --extern tinyvec_macros=/playground/target/debug/deps/libtinyvec_macros-81d45e7b064eddd1.rmeta --extern tokio=/playground/target/debug/deps/libtokio-89dc1aacc690db7f.rmeta --extern tokio_native_tls=/playground/target/debug/deps/libtokio_native_tls-ee3ddcd438ed4095.rmeta --extern tokio_postgres=/playground/target/debug/deps/libtokio_postgres-0c92c5709bbf800a.rmeta --extern tokio_util=/playground/target/debug/deps/libtokio_util-46bc61a788a4663b.rmeta --extern toml=/playground/target/debug/deps/libtoml-f8a3e338d8b2ec8c.rmeta --extern tower_service=/playground/target/debug/deps/libtower_service-81097ae8f3ca822e.rmeta --extern tracing=/playground/target/debug/deps/libtracing-131dd695f9a3faa0.rmeta --extern tracing_core=/playground/target/debug/deps/libtracing_core-fb9824e74e5fe1d0.rmeta --extern traitobject=/playground/target/debug/deps/libtraitobject-65b44d6642786d87.rmeta --extern try_lock=/playground/target/debug/deps/libtry_lock-e4ac6437db956571.rmeta --extern typemap=/playground/target/debug/deps/libtypemap-ac1698b586ce6597.rmeta --extern typenum=/playground/target/debug/deps/libtypenum-9e7e9f850d4382a6.rmeta --extern ucd_trie=/playground/target/debug/deps/libucd_trie-45ec7daed9838d32.rmeta --extern unicase=/playground/target/debug/deps/libunicase-101756c05806db13.rmeta --extern unicode_bidi=/playground/target/debug/deps/libunicode_bidi-3139b89156d0786c.rmeta --extern unicode_normalization=/playground/target/debug/deps/libunicode_normalization-9e911e4edf677bf4.rmeta --extern unicode_segmentation=/playground/target/debug/deps/libunicode_segmentation-7eaecf846a4a004b.rmeta --extern unicode_width=/playground/target/debug/deps/libunicode_width-44d374a05dce6145.rmeta --extern unicode_xid=/playground/target/debug/deps/libunicode_xid-b18ccd133c106cd2.rmeta --extern unsafe_any=/playground/target/debug/deps/libunsafe_any-fbd575c915548e61.rmeta --extern untrusted=/playground/target/debug/deps/libuntrusted-524f673fcd7df21f.rmeta --extern url=/playground/target/debug/deps/liburl-273ff0298e451cf3.rmeta --extern utf8=/playground/target/debug/deps/libutf8-03bfb833d07e7ce7.rmeta --extern uuid=/playground/target/debug/deps/libuuid-6b01ff66b69be148.rmeta --extern vec_map=/playground/target/debug/deps/libvec_map-3e0d68bb2400498e.rmeta --extern version_check=/playground/target/debug/deps/libversion_check-8621e40e791d7e0b.rmeta --extern walkdir=/playground/target/debug/deps/libwalkdir-9288cdb139d035e8.rmeta --extern want=/playground/target/debug/deps/libwant-c21a0912f1e5429f.rmeta --extern weezl=/playground/target/debug/deps/libweezl-ef532351b91f45d8.rmeta --extern winapi=/playground/target/debug/deps/libwinapi-769de98f80380deb.rmeta --extern xattr=/playground/target/debug/deps/libxattr-31db13a661348bef.rmeta --extern xml5ever=/playground/target/debug/deps/libxml5ever-b1f2a27a4cf21995.rmeta --extern yaml_rust=/playground/target/debug/deps/libyaml_rust-bcd6d9b5400b9c0e.rmeta -L native=/playground/target/debug/build/libsqlite3-sys-a91e742d94f16749/out -L native=/playground/target/debug/build/ring-8241b1316fef72ea/out` (signal: 4, SIGILL: illegal instruction)

Backtrace

Compiling playground v0.0.1 (/playground)
error: internal compiler error: compiler/rustc_middle/src/ty/fold.rs:829:17: Trying to collect bound vars with a bound region: DebruijnIndex(0) BoundRegion { var: 0, kind: BrAnon(0) }

thread 'rustc' panicked at 'Box<Any>', compiler/rustc_errors/src/lib.rs:1005:9
stack backtrace:
   0: std::panicking::begin_panic
   1: std::panic::panic_any
   2: rustc_errors::HandlerInner::bug
   3: rustc_errors::Handler::bug
   4: rustc_middle::ty::context::tls::with_opt
   5: rustc_middle::util::bug::opt_span_bug_fmt
   6: rustc_middle::util::bug::bug_fmt
   7: <rustc_middle::ty::fold::BoundVarsCollector as rustc_middle::ty::fold::TypeVisitor>::visit_ty
   8: rustc_middle::ty::sty::Binder<T>::bind
   9: rustc_ty_utils::instance::inner_resolve_instance
  10: rustc_ty_utils::instance::resolve_instance
  11: rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::resolve_instance>::compute
  12: rustc_query_system::query::plumbing::get_query_impl
  13: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::resolve_instance
  14: rustc_middle::ty::instance::Instance::resolve_opt_const_arg
  15: rustc_middle::mir::interpret::queries::<impl rustc_middle::ty::context::TyCtxt>::const_eval_resolve
  16: <rustc_trait_selection::traits::query::normalize::QueryNormalizer as rustc_middle::ty::fold::TypeFolder>::fold_const
  17: <rustc_trait_selection::traits::query::normalize::QueryNormalizer as rustc_middle::ty::fold::TypeFolder>::fold_mir_const
  18: <rustc_infer::infer::at::At as rustc_trait_selection::traits::query::normalize::AtExt>::normalize
  19: rustc_infer::infer::InferCtxtBuilder::enter
  20: core::ops::function::FnOnce::call_once
  21: rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::normalize_mir_const_after_erasing_regions>::compute
  22: rustc_query_system::query::plumbing::get_query_impl
  23: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::normalize_mir_const_after_erasing_regions
  24: rustc_middle::ty::normalize_erasing_regions::<impl rustc_middle::ty::context::TyCtxt>::normalize_erasing_regions
  25: rustc_mir::interpret::eval_context::InterpCx<M>::push_stack_frame
  26: rustc_mir::interpret::terminator::<impl rustc_mir::interpret::eval_context::InterpCx<M>>::eval_fn_call
  27: rustc_mir::interpret::step::<impl rustc_mir::interpret::eval_context::InterpCx<M>>::run
  28: rustc_mir::const_eval::eval_queries::eval_to_allocation_raw_provider
  29: rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::eval_to_allocation_raw>::compute
  30: rustc_query_system::query::plumbing::get_query_impl
  31: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::eval_to_allocation_raw
  32: rustc_mir::const_eval::eval_queries::eval_to_const_value_raw_provider
  33: rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::eval_to_const_value_raw>::compute
  34: rustc_query_system::query::plumbing::get_query_impl
  35: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::eval_to_const_value_raw
  36: rustc_middle::mir::interpret::queries::<impl rustc_middle::ty::context::TyCtxt>::const_eval_global_id
  37: rustc_middle::mir::interpret::queries::<impl rustc_middle::ty::context::TyCtxt>::const_eval_resolve
  38: rustc_infer::infer::InferCtxt::const_eval_resolve
  39: rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations::{{closure}}
  40: rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations
  41: rustc_data_structures::obligation_forest::ObligationForest<O>::process_obligations
  42: <rustc_trait_selection::traits::fulfill::FulfillmentContext as rustc_infer::traits::engine::TraitEngine>::select_where_possible
  43: rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_argument_types
  44: rustc_typeck::check::callee::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::confirm_builtin_call
  45: rustc_typeck::check::callee::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_call
  46: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_kind
  47: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
  48: rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_stmt
  49: rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_block_with_expected
  50: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
  51: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_return_expr
  52: rustc_typeck::check::check::check_fn
  53: rustc_typeck::check::inherited::InheritedBuilder::enter
  54: rustc_typeck::check::typeck
  55: rustc_query_system::query::plumbing::get_query_impl
  56: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck
  57: rustc_middle::ty::<impl rustc_middle::ty::context::TyCtxt>::par_body_owners
  58: rustc_typeck::check::typeck_item_bodies
  59: rustc_query_system::query::plumbing::get_query_impl
  60: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck_item_bodies
  61: rustc_session::utils::<impl rustc_session::session::Session>::time
  62: rustc_typeck::check_crate
  63: rustc_interface::passes::analysis
  64: rustc_query_system::query::plumbing::get_query_impl
  65: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
  66: rustc_interface::passes::QueryContext::enter
  67: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  68: rustc_span::with_source_map
  69: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.54.0-nightly (c1e8f3a58 2021-05-30) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
thread 'rustc' panicked at 'substs of instance DefId(0:10 ~ playground[4a2c]::_Contains::does_contain) not normalized for codegen: [FileCap<FileOp::Write, FileResource::StaticPath("foobar")>, &C]', compiler/rustc_middle/src/ty/instance.rs:285:9
stack backtrace:
   0:     0x7f2cafb83f80 - std::backtrace_rs::backtrace::libunwind::trace::h1a39bd9a98540471
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
   1:     0x7f2cafb83f80 - std::backtrace_rs::backtrace::trace_unsynchronized::h21a1eeae7103ab3f
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f2cafb83f80 - std::sys_common::backtrace::_print_fmt::hc9ffbae9ed6a9871
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x7f2cafb83f80 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h17510753a34a3f09
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:46:22
   4:     0x7f2cafbf19ac - core::fmt::write::h1e5a1f350e43b10f
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/core/src/fmt/mod.rs:1110:17
   5:     0x7f2cafb75805 - std::io::Write::write_fmt::h06ec27c6d028baf1
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/io/mod.rs:1588:15
   6:     0x7f2cafb87ddb - std::sys_common::backtrace::_print::h1a02603349b1dc60
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:49:5
   7:     0x7f2cafb87ddb - std::sys_common::backtrace::print::h0fc317d31c48cd9b
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:36:9
   8:     0x7f2cafb87ddb - std::panicking::default_hook::{{closure}}::ha522601c22d7057b
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:208:50
   9:     0x7f2cafb878b1 - std::panicking::default_hook::hd50ab173af9a3ce8
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:225:9
  10:     0x7f2cb03589bd - rustc_driver::report_ice::h0bbc0ae77d597594
  11:     0x7f2cafb885e6 - std::panicking::rust_panic_with_hook::hb5a01416e02405ad
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:626:17
  12:     0x7f2cafb880c7 - std::panicking::begin_panic_handler::{{closure}}::hf1dda5d5c0706ee0
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:519:13
  13:     0x7f2cafb8445c - std::sys_common::backtrace::__rust_end_short_backtrace::h56c02e9609085b17
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys_common/backtrace.rs:141:18
  14:     0x7f2cafb88029 - rust_begin_unwind
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:515:5
  15:     0x7f2cafb50eeb - std::panicking::begin_panic_fmt::h5889dddec113b3e8
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:457:5
  16:     0x7f2cb1dc9223 - rustc_middle::ty::instance::Instance::new::h138b137268683e1e
  17:     0x7f2cb0907205 - std::thread::local::LocalKey<T>::with::h5d9224abdd7920e1
  18:     0x7f2cb090d8b4 - std::thread::local::LocalKey<T>::with::h98ac41cac71185c2
  19:     0x7f2cb093dcde - rustc_query_impl::make_query::resolve_instance::h6c2db3b7c4731c32
  20:     0x7f2cb087d4dd - rustc_query_system::query::plumbing::QueryState<D,K>::try_collect_active_jobs::h8d3183294409f20d
  21:     0x7f2cb09567da - rustc_query_impl::Queries::try_collect_active_jobs::h804da0378b7580b3
  22:     0x7f2cb0a86ad7 - rustc_query_system::query::job::print_query_stack::hd56f847aa29e3347
  23:     0x7f2cb0406637 - rustc_interface::interface::try_print_query_stack::hcd178fe26145ef9d
  24:     0x7f2cb0358d6d - rustc_driver::report_ice::h0bbc0ae77d597594
  25:     0x7f2cafb885e6 - std::panicking::rust_panic_with_hook::hb5a01416e02405ad
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/panicking.rs:626:17
  26:     0x7f2cb133093b - std::panicking::begin_panic::{{closure}}::h79be31a52b7554ed
  27:     0x7f2cb13308f6 - std::sys_common::backtrace::__rust_end_short_backtrace::h0d6d6b53a98843e6
  28:     0x7f2cb13320cf - std::panicking::begin_panic::h1d412c1e7c1dec3c
  29:     0x7f2cb1349a3d - std::panic::panic_any::h427710dcb10bbe92
  30:     0x7f2cb134c93a - rustc_errors::HandlerInner::bug::h54fd3663069746c7
  31:     0x7f2cb134c3e0 - rustc_errors::Handler::bug::h6fd29773c2809aef
  32:     0x7f2cb129b8e0 - rustc_middle::ty::context::tls::with_opt::h5d93e51ac4f84952
  33:     0x7f2cb129ed40 - rustc_middle::util::bug::opt_span_bug_fmt::h73ef8867dd647d6e
  34:     0x7f2cb129ecb6 - rustc_middle::util::bug::bug_fmt::h5eaf5bea31bbe7e0
  35:     0x7f2cb1df0e70 - <rustc_middle::ty::fold::BoundVarsCollector as rustc_middle::ty::fold::TypeVisitor>::visit_ty::h6514ebe90c448cdd
  36:     0x7f2cb165a986 - rustc_middle::ty::sty::Binder<T>::bind::h50c53be3fc93c400
  37:     0x7f2cb1657fcb - rustc_ty_utils::instance::inner_resolve_instance::h2ee186f9093bf7d7
  38:     0x7f2cb1657227 - rustc_ty_utils::instance::resolve_instance::h452e351b7015c1e3
  39:     0x7f2cb176b513 - rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::resolve_instance>::compute::h3a414191b883d966
  40:     0x7f2cb17562b8 - rustc_query_system::query::plumbing::get_query_impl::hf75519e5cd807995
  41:     0x7f2cb1795e2d - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::resolve_instance::h82667371ba59cd83
  42:     0x7f2cb1dcaffd - rustc_middle::ty::instance::Instance::resolve_opt_const_arg::ha0925e4a88f592f8
  43:     0x7f2cb1d8331a - rustc_middle::mir::interpret::queries::<impl rustc_middle::ty::context::TyCtxt>::const_eval_resolve::h05ad8dfc76427d5b
  44:     0x7f2cb1c85570 - <rustc_trait_selection::traits::query::normalize::QueryNormalizer as rustc_middle::ty::fold::TypeFolder>::fold_const::h1a2b3db3741ddf78
  45:     0x7f2cb2664151 - <rustc_trait_selection::traits::query::normalize::QueryNormalizer as rustc_middle::ty::fold::TypeFolder>::fold_mir_const::hc529b8661d679324
  46:     0x7f2cb20240f7 - <rustc_infer::infer::at::At as rustc_trait_selection::traits::query::normalize::AtExt>::normalize::hbb82211ffd579d79
  47:     0x7f2cb2016f21 - rustc_infer::infer::InferCtxtBuilder::enter::h2d501578ee6c38b9
  48:     0x7f2cb2023c32 - core::ops::function::FnOnce::call_once::h67853e98b8f1ca08
  49:     0x7f2cb227d0a8 - rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::normalize_mir_const_after_erasing_regions>::compute::h013cf6812c6dfcde
  50:     0x7f2cb221b2a4 - rustc_query_system::query::plumbing::get_query_impl::hd0fdeba8daa0e895
  51:     0x7f2cb22afb39 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::normalize_mir_const_after_erasing_regions::hef60be0778070bfa
  52:     0x7f2cb19eb0ed - rustc_middle::ty::normalize_erasing_regions::<impl rustc_middle::ty::context::TyCtxt>::normalize_erasing_regions::h8cd5a629f411350d
  53:     0x7f2cb19c45d0 - rustc_mir::interpret::eval_context::InterpCx<M>::push_stack_frame::hb4d3d6e60f56f2cd
  54:     0x7f2cb19e57ff - rustc_mir::interpret::terminator::<impl rustc_mir::interpret::eval_context::InterpCx<M>>::eval_fn_call::h18df32d0a18b92f7
  55:     0x7f2cb19d7dfb - rustc_mir::interpret::step::<impl rustc_mir::interpret::eval_context::InterpCx<M>>::run::h578d68801dae73c8
  56:     0x7f2cb18e0770 - rustc_mir::const_eval::eval_queries::eval_to_allocation_raw_provider::hc342a5cc80315017
  57:     0x7f2cb176aefd - rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::eval_to_allocation_raw>::compute::h50f34bc5c1b84fb8
  58:     0x7f2cb173bc64 - rustc_query_system::query::plumbing::get_query_impl::h82efa1836f4eb10a
  59:     0x7f2cb1793df7 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::eval_to_allocation_raw::h2b3ca26d4a0bfe39
  60:     0x7f2cb18df1aa - rustc_mir::const_eval::eval_queries::eval_to_const_value_raw_provider::h492a1f0908ef1033
  61:     0x7f2cb176af3d - rustc_query_impl::<impl rustc_query_system::query::config::QueryAccessors<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::eval_to_const_value_raw>::compute::hf332c6ae6cc62cca
  62:     0x7f2cb17446e5 - rustc_query_system::query::plumbing::get_query_impl::ha84d8dc8b8f75ed2
  63:     0x7f2cb1793f17 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::eval_to_const_value_raw::h46d27616aa3d4e98
  64:     0x7f2cb1d6c684 - rustc_middle::mir::interpret::queries::<impl rustc_middle::ty::context::TyCtxt>::const_eval_global_id::h5b31d85c4aaa4700
  65:     0x7f2cb1d8335d - rustc_middle::mir::interpret::queries::<impl rustc_middle::ty::context::TyCtxt>::const_eval_resolve::h05ad8dfc76427d5b
  66:     0x7f2cb26a0056 - rustc_infer::infer::InferCtxt::const_eval_resolve::h8853853f26ced4a7
  67:     0x7f2cb1085449 - rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations::{{closure}}::h31242c7bb950182e
  68:     0x7f2cb1c848d9 - rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations::he0b9099f8a0ebc6e
  69:     0x7f2cb1c9f47f - rustc_data_structures::obligation_forest::ObligationForest<O>::process_obligations::h85e16c4356ccd540
  70:     0x7f2cb1c83c7b - <rustc_trait_selection::traits::fulfill::FulfillmentContext as rustc_infer::traits::engine::TraitEngine>::select_where_possible::h137caf5bfc9f4211
  71:     0x7f2cb153febc - rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_argument_types::hd9c65b7090c33843
  72:     0x7f2cb152367b - rustc_typeck::check::callee::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::confirm_builtin_call::h49cff8412dd49fd0
  73:     0x7f2cb1522830 - rustc_typeck::check::callee::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_call::h9e8271b1bb5c17fc
  74:     0x7f2cb152b6d7 - rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_kind::h9a0610c69d1db80e
  75:     0x7f2cb152ada5 - rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation::hbec31136b572e013
  76:     0x7f2cb1542276 - rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_stmt::hd9c9401fae4f4007
  77:     0x7f2cb1542b0c - rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_block_with_expected::hec26ce1e195d7b11
  78:     0x7f2cb152ada5 - rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation::hbec31136b572e013
  79:     0x7f2cb1536323 - rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_return_expr::hd1dd70742d727dbf
  80:     0x7f2cb1615a18 - rustc_typeck::check::check::check_fn::h6af6276ff63ec41c
  81:     0x7f2cb15bb43c - rustc_typeck::check::inherited::InheritedBuilder::enter::hf5a3faec0a6907b2
  82:     0x7f2cb160e088 - rustc_typeck::check::typeck::h896d419cb4279063
  83:     0x7f2cb1743a8f - rustc_query_system::query::plumbing::get_query_impl::ha6569a99536f15ef
  84:     0x7f2cb1793bad - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck::hc9871bea409f75ba
  85:     0x7f2cb158748a - rustc_middle::ty::<impl rustc_middle::ty::context::TyCtxt>::par_body_owners::h5653ee80ce8eeaf5
  86:     0x7f2cb211cb0c - rustc_typeck::check::typeck_item_bodies::h84a3ebce4ed8af72
  87:     0x7f2cb2208537 - rustc_query_system::query::plumbing::get_query_impl::h9d41a92686f2332d
  88:     0x7f2cb22ac3c9 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck_item_bodies::hfc11308daf2482eb
  89:     0x7f2cb20c3fdf - rustc_session::utils::<impl rustc_session::session::Session>::time::h5e0207abea9a46ba
  90:     0x7f2cb214be2c - rustc_typeck::check_crate::h033d52ddf5a3c52c
  91:     0x7f2cb145b4dc - rustc_interface::passes::analysis::h44573dd1f435360d
  92:     0x7f2cb2210c14 - rustc_query_system::query::plumbing::get_query_impl::hb28d9338aaa73db6
  93:     0x7f2cb22aa619 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis::h92a4884e0478500d
  94:     0x7f2cb1e89aa7 - rustc_interface::passes::QueryContext::enter::hb9b4b642821635fe
  95:     0x7f2cb1e656e3 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::h16bd07ff16fa3d4a
  96:     0x7f2cb1e61f0c - rustc_span::with_source_map::h6ee13da35fa72295
  97:     0x7f2cb1e64f28 - scoped_tls::ScopedKey<T>::set::h9c6565b722913393
  98:     0x7f2cb1e89e4b - std::sys_common::backtrace::__rust_begin_short_backtrace::hdcf17779193f6d57
  99:     0x7f2cb1e60c15 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hf48084e1b458d4b2
 100:     0x7f2cafb94ad7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf00ff0dfc0b9e39f
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/alloc/src/boxed.rs:1575:9
 101:     0x7f2cafb94ad7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h236979b1b61b3517
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/alloc/src/boxed.rs:1575:9
 102:     0x7f2cafb94ad7 - std::sys::unix::thread::Thread::new::thread_start::h8f357e546e4775fa
                               at /rustc/c1e8f3a5857c3c8d095fd212acc6ed442f4cc58b/library/std/src/sys/unix/thread.rs:71:17
 103:     0x7f2cafacf609 - start_thread
 104:     0x7f2caf9e3293 - clone
 105:                0x0 - <unknown>

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.54.0-nightly (c1e8f3a58 2021-05-30) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
end of query stack
thread panicked while panicking. aborting.
error: could not compile `playground`

Caused by:
  process didn't exit successfully: `rustc --crate-name playground --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 -C metadata=d5583dc9c61d0f13 -C extra-filename=-d5583dc9c61d0f13 --out-dir /playground/target/debug/deps -L dependency=/playground/target/debug/deps --extern addr2line=/playground/target/debug/deps/libaddr2line-ee0d9d4a76af11ea.rmeta --extern adler=/playground/target/debug/deps/libadler-b49c949e3504cbd1.rmeta --extern adler32=/playground/target/debug/deps/libadler32-d4247d4849a00fb6.rmeta --extern ahash=/playground/target/debug/deps/libahash-66e41c6e5122aadb.rmeta --extern aho_corasick=/playground/target/debug/deps/libaho_corasick-c6441250f4377f75.rmeta --extern ansi_term_0_11_0=/playground/target/debug/deps/libansi_term-120d85761b0feaf7.rmeta --extern ansi_term=/playground/target/debug/deps/libansi_term-ab35f8b11e59385a.rmeta --extern anyhow=/playground/target/debug/deps/libanyhow-179cdb76302d10b0.rmeta --extern approx=/playground/target/debug/deps/libapprox-190b3889ec54de9c.rmeta --extern arc_swap=/playground/target/debug/deps/libarc_swap-7b1a27cbfcae6908.rmeta --extern arrayvec=/playground/target/debug/deps/libarrayvec-ed5725d717896463.rmeta --extern async_trait=/playground/target/debug/deps/libasync_trait-9b53c0ce0d6bf428.so --extern atty=/playground/target/debug/deps/libatty-b32971181cd4632c.rmeta --extern autocfg=/playground/target/debug/deps/libautocfg-335ede5611a9b684.rmeta --extern backtrace=/playground/target/debug/deps/libbacktrace-038694a4f7fabb45.rmeta --extern base64=/playground/target/debug/deps/libbase64-c4895e085902010c.rmeta --extern bit_set=/playground/target/debug/deps/libbit_set-47a0d090fe1f7f69.rmeta --extern bit_vec=/playground/target/debug/deps/libbit_vec-d1b5bfc20fd2fdbc.rmeta --extern bitflags=/playground/target/debug/deps/libbitflags-a2155987696b8596.rmeta --extern block_buffer=/playground/target/debug/deps/libblock_buffer-cf569edb3edc0bc5.rmeta --extern bstr=/playground/target/debug/deps/libbstr-d6fef2b5ed7a6253.rmeta --extern bytemuck=/playground/target/debug/deps/libbytemuck-9cbbcec9795b0be3.rmeta --extern byteorder=/playground/target/debug/deps/libbyteorder-247b40861da05bec.rmeta --extern bytes=/playground/target/debug/deps/libbytes-fee841c20de076cb.rmeta --extern cc=/playground/target/debug/deps/libcc-14df8ee1f221c2e7.rmeta --extern cfg_if_0_1_10=/playground/target/debug/deps/libcfg_if-a42a72dabfa4a887.rmeta --extern cfg_if=/playground/target/debug/deps/libcfg_if-17db79e6160d9d60.rmeta --extern chrono=/playground/target/debug/deps/libchrono-3055731e32502d08.rmeta --extern clap=/playground/target/debug/deps/libclap-2d33e23686e77c52.rmeta --extern color_quant=/playground/target/debug/deps/libcolor_quant-18f74000246df249.rmeta --extern const_fn=/playground/target/debug/deps/libconst_fn-2fa43ad16cae7ca1.so --extern cpufeatures=/playground/target/debug/deps/libcpufeatures-83c3ca0f017c3e89.rmeta --extern crc32fast=/playground/target/debug/deps/libcrc32fast-11f74ee15174c644.rmeta --extern crossbeam=/playground/target/debug/deps/libcrossbeam-c6ea1577332ee86d.rmeta --extern crossbeam_channel=/playground/target/debug/deps/libcrossbeam_channel-cf2faca17e7aa8e0.rmeta --extern crossbeam_deque=/playground/target/debug/deps/libcrossbeam_deque-f4851f8a143ce40b.rmeta --extern crossbeam_epoch=/playground/target/debug/deps/libcrossbeam_epoch-28907527c93d5ffa.rmeta --extern crossbeam_queue=/playground/target/debug/deps/libcrossbeam_queue-508e25cb0c9b5c6e.rmeta --extern crossbeam_utils=/playground/target/debug/deps/libcrossbeam_utils-042ee9495f71bdfb.rmeta --extern crypto_mac=/playground/target/debug/deps/libcrypto_mac-c62c745d6784bc52.rmeta --extern csv=/playground/target/debug/deps/libcsv-a7bfd95643843dbe.rmeta --extern csv_core=/playground/target/debug/deps/libcsv_core-89157bb2fb151cdd.rmeta --extern data_encoding=/playground/target/debug/deps/libdata_encoding-5b6f22d0f4108c54.rmeta --extern deflate=/playground/target/debug/deps/libdeflate-e53f1b38507311f9.rmeta --extern derivative=/playground/target/debug/deps/libderivative-606320fe6b1cdefc.so --extern digest=/playground/target/debug/deps/libdigest-fb0e132aa354ba96.rmeta --extern dtoa=/playground/target/debug/deps/libdtoa-4c7fbf1ff0cbab74.rmeta --extern either=/playground/target/debug/deps/libeither-04371dfd35bf3584.rmeta --extern encoding_rs=/playground/target/debug/deps/libencoding_rs-1e774a9fa3beaffe.rmeta --extern env_logger=/playground/target/debug/deps/libenv_logger-e2cdfc5bfa4ca8d3.rmeta --extern error_chain=/playground/target/debug/deps/liberror_chain-210e48177c7db42f.rmeta --extern fallible_iterator=/playground/target/debug/deps/libfallible_iterator-ff9acd467715c624.rmeta --extern fallible_streaming_iterator=/playground/target/debug/deps/libfallible_streaming_iterator-af89121c1162058b.rmeta --extern filetime=/playground/target/debug/deps/libfiletime-3db6ab81dd6d75c0.rmeta --extern fixedbitset=/playground/target/debug/deps/libfixedbitset-7f130894b62c8660.rmeta --extern flate2=/playground/target/debug/deps/libflate2-2fdbab57365ff513.rmeta --extern fnv=/playground/target/debug/deps/libfnv-ae9dcfe01b70696a.rmeta --extern foreign_types=/playground/target/debug/deps/libforeign_types-35628d5e26d8374d.rmeta --extern foreign_types_shared=/playground/target/debug/deps/libforeign_types_shared-04972c5c102436b5.rmeta --extern form_urlencoded=/playground/target/debug/deps/libform_urlencoded-e91eb0906f17a107.rmeta --extern futf=/playground/target/debug/deps/libfutf-ab209591d3e97362.rmeta --extern futures=/playground/target/debug/deps/libfutures-3640da6c18eeac60.rmeta --extern futures_channel=/playground/target/debug/deps/libfutures_channel-697402c8a6d1b4d9.rmeta --extern futures_core=/playground/target/debug/deps/libfutures_core-91cc4549ca0472bf.rmeta --extern futures_executor=/playground/target/debug/deps/libfutures_executor-1919684d89f05f3b.rmeta --extern futures_io=/playground/target/debug/deps/libfutures_io-1c519c7af5f9be31.rmeta --extern futures_macro=/playground/target/debug/deps/libfutures_macro-98ca7b3d3a049c34.so --extern futures_sink=/playground/target/debug/deps/libfutures_sink-1ba616e92182ae88.rmeta --extern futures_task=/playground/target/debug/deps/libfutures_task-c10619735ffa0a4f.rmeta --extern futures_util=/playground/target/debug/deps/libfutures_util-8bb7d92340bb0033.rmeta --extern generic_array=/playground/target/debug/deps/libgeneric_array-ac53d730f67a9215.rmeta --extern getrandom_0_1_16=/playground/target/debug/deps/libgetrandom-dd734ec333646ec0.rmeta --extern getrandom=/playground/target/debug/deps/libgetrandom-953aad598d824cb7.rmeta --extern gif=/playground/target/debug/deps/libgif-5981fd6c37878d57.rmeta --extern gimli=/playground/target/debug/deps/libgimli-6cb0c61547c32c8f.rmeta --extern glob=/playground/target/debug/deps/libglob-8875c8c77f264e1f.rmeta --extern h2=/playground/target/debug/deps/libh2-04e37a8fa0f03808.rmeta --extern hashbrown_0_9_1=/playground/target/debug/deps/libhashbrown-b64880a240aa7322.rmeta --extern hashbrown=/playground/target/debug/deps/libhashbrown-4b9ac570b77fd59a.rmeta --extern hashlink=/playground/target/debug/deps/libhashlink-2df54f962698c5b5.rmeta --extern hmac=/playground/target/debug/deps/libhmac-6ca13de78761dcfa.rmeta --extern html5ever=/playground/target/debug/deps/libhtml5ever-fe07ebe884d52b30.rmeta --extern http=/playground/target/debug/deps/libhttp-6d4e9ea1f4436748.rmeta --extern http_body=/playground/target/debug/deps/libhttp_body-19f131530a31992a.rmeta --extern httparse=/playground/target/debug/deps/libhttparse-470041685c40f349.rmeta --extern httpdate=/playground/target/debug/deps/libhttpdate-3777d2580bf7b262.rmeta --extern humantime=/playground/target/debug/deps/libhumantime-2dac88ea32d7c5f9.rmeta --extern hyper=/playground/target/debug/deps/libhyper-269f946083df2091.rlib --extern hyper_tls=/playground/target/debug/deps/libhyper_tls-3cd96babba668b53.rmeta --extern idna=/playground/target/debug/deps/libidna-5189f56b88cf228a.rmeta --extern image=/playground/target/debug/deps/libimage-12c2fa3bf902c850.rmeta --extern indexmap=/playground/target/debug/deps/libindexmap-a16c9943b089e7da.rmeta --extern instant=/playground/target/debug/deps/libinstant-048283c91b125bac.rmeta --extern iovec=/playground/target/debug/deps/libiovec-20d7ac17ea53fe5d.rmeta --extern ipnet=/playground/target/debug/deps/libipnet-c9dd5fe28501a45f.rmeta --extern itertools=/playground/target/debug/deps/libitertools-83b02edb16ec9dc2.rmeta --extern itoa=/playground/target/debug/deps/libitoa-83e3755614d1c657.rmeta --extern jpeg_decoder=/playground/target/debug/deps/libjpeg_decoder-998a051a33d2a30b.rmeta --extern lazy_static=/playground/target/debug/deps/liblazy_static-735e050bd0c7e24f.rmeta --extern libc=/playground/target/debug/deps/liblibc-1995c28b8f2b0962.rmeta --extern libm=/playground/target/debug/deps/liblibm-cea705af515fc7b9.rmeta --extern libsqlite3_sys=/playground/target/debug/deps/liblibsqlite3_sys-aa8be5e8db948cf1.rmeta --extern linked_hash_map=/playground/target/debug/deps/liblinked_hash_map-de04d3a5c1d34737.rmeta --extern lock_api=/playground/target/debug/deps/liblock_api-ac13900cead869b4.rmeta --extern log=/playground/target/debug/deps/liblog-408df375a9649a3b.rmeta --extern log_mdc=/playground/target/debug/deps/liblog_mdc-99e505949276356c.rmeta --extern log4rs=/playground/target/debug/deps/liblog4rs-fc0ad27b59678119.rmeta --extern mac=/playground/target/debug/deps/libmac-e654eafe9d5122d7.rmeta --extern markup5ever=/playground/target/debug/deps/libmarkup5ever-5d4403d9e0000b42.rmeta --extern markup5ever_rcdom=/playground/target/debug/deps/libmarkup5ever_rcdom-83574fb059ebb9e9.rmeta --extern matches=/playground/target/debug/deps/libmatches-bd6291e3e71f7f58.rmeta --extern matrixmultiply=/playground/target/debug/deps/libmatrixmultiply-2815ae7c5268c707.rmeta --extern md5=/playground/target/debug/deps/libmd5-c688bc3f2ad8e1bf.rmeta --extern memchr=/playground/target/debug/deps/libmemchr-303ba0c6b7f69fdd.rmeta --extern memmap=/playground/target/debug/deps/libmemmap-75637b8d7b752bb8.rmeta --extern memoffset=/playground/target/debug/deps/libmemoffset-7bc0aaefb961dea4.rmeta --extern mime=/playground/target/debug/deps/libmime-b10d8882042d97b0.rmeta --extern miniz_oxide_0_3_7=/playground/target/debug/deps/libminiz_oxide-1d1d3f7f4239ae4c.rmeta --extern miniz_oxide=/playground/target/debug/deps/libminiz_oxide-e797ff84e041dd1b.rmeta --extern mio=/playground/target/debug/deps/libmio-4bc38476a11e445d.rmeta --extern nalgebra=/playground/target/debug/deps/libnalgebra-497ec3171c8a4d1d.rmeta --extern native_tls=/playground/target/debug/deps/libnative_tls-9894440be1f722c7.rmeta --extern ndarray=/playground/target/debug/deps/libndarray-9fb34296dc561b08.rmeta --extern net2=/playground/target/debug/deps/libnet2-e701ad3c61b0b028.rmeta --extern debug_unreachable=/playground/target/debug/deps/libdebug_unreachable-b62bf2bc851953e4.rmeta --extern num=/playground/target/debug/deps/libnum-310bd912008768ec.rmeta --extern num_bigint=/playground/target/debug/deps/libnum_bigint-f29aaa9fd78cd487.rmeta --extern num_complex_0_3_1=/playground/target/debug/deps/libnum_complex-980527fb46f49d6c.rmeta --extern num_complex=/playground/target/debug/deps/libnum_complex-c5a2adc8136581d0.rmeta --extern num_integer=/playground/target/debug/deps/libnum_integer-ef83eb595093d5c1.rmeta --extern num_iter=/playground/target/debug/deps/libnum_iter-26ef1d7d168b78fc.rmeta --extern num_rational_0_3_2=/playground/target/debug/deps/libnum_rational-7cc1ce30694fb776.rmeta --extern num_rational=/playground/target/debug/deps/libnum_rational-4f68421956e44075.rmeta --extern num_traits=/playground/target/debug/deps/libnum_traits-29185bbab3bdb97e.rmeta --extern num_cpus=/playground/target/debug/deps/libnum_cpus-5b99b8fc9a28fdc5.rmeta --extern object=/playground/target/debug/deps/libobject-b93a28bf81b69015.rmeta --extern once_cell=/playground/target/debug/deps/libonce_cell-17eb46c299237e16.rmeta --extern opaque_debug=/playground/target/debug/deps/libopaque_debug-0572f128331f44db.rmeta --extern openssl=/playground/target/debug/deps/libopenssl-efb98e29b5e5fba2.rmeta --extern openssl_probe=/playground/target/debug/deps/libopenssl_probe-686a8228f73d5587.rmeta --extern openssl_sys=/playground/target/debug/deps/libopenssl_sys-4045b399e7cdf3d3.rmeta --extern ordered_float=/playground/target/debug/deps/libordered_float-019dfbabae12313c.rmeta --extern parking_lot=/playground/target/debug/deps/libparking_lot-fbc04678a689e37a.rmeta --extern parking_lot_core=/playground/target/debug/deps/libparking_lot_core-4b82bbd1f7f9b70f.rmeta --extern paste=/playground/target/debug/deps/libpaste-00233cab4e8b72fc.so --extern percent_encoding=/playground/target/debug/deps/libpercent_encoding-6b4a80c4029ee4a3.rmeta --extern pest=/playground/target/debug/deps/libpest-921bca10ad4500d5.rmeta --extern petgraph=/playground/target/debug/deps/libpetgraph-062a231d714bf404.rmeta --extern phf=/playground/target/debug/deps/libphf-229c542ba338a49b.rmeta --extern phf_codegen=/playground/target/debug/deps/libphf_codegen-bdb4f021da5a033f.rmeta --extern phf_generator=/playground/target/debug/deps/libphf_generator-3536c6b907b70097.rmeta --extern phf_shared=/playground/target/debug/deps/libphf_shared-2a85a3479f3e9d7c.rmeta --extern pin_project=/playground/target/debug/deps/libpin_project-f77941bfb3338770.rmeta --extern pin_project_internal=/playground/target/debug/deps/libpin_project_internal-4dac01d9f797bd58.so --extern pin_project_lite=/playground/target/debug/deps/libpin_project_lite-4aca7f5ab6899e96.rmeta --extern pin_utils=/playground/target/debug/deps/libpin_utils-dd2961d584c22a9f.rmeta --extern pkg_config=/playground/target/debug/deps/libpkg_config-562f800da154de92.rmeta --extern png=/playground/target/debug/deps/libpng-cea4ce28892beca3.rmeta --extern postgres=/playground/target/debug/deps/libpostgres-0dbfa21c851ef125.rmeta --extern postgres_protocol=/playground/target/debug/deps/libpostgres_protocol-dc84516331d375dc.rmeta --extern postgres_types=/playground/target/debug/deps/libpostgres_types-d9c2dce66b67e3f4.rmeta --extern ppv_lite86=/playground/target/debug/deps/libppv_lite86-e926ed38ecbba29b.rmeta --extern precomputed_hash=/playground/target/debug/deps/libprecomputed_hash-c6d01971a34f5807.rmeta --extern proc_macro_hack=/playground/target/debug/deps/libproc_macro_hack-1fe68e267e98fed1.so --extern proc_macro_nested=/playground/target/debug/deps/libproc_macro_nested-c3e0e2e0e50d9cf6.rmeta --extern proc_macro2=/playground/target/debug/deps/libproc_macro2-171d29b015a25fed.rmeta --extern quick_error=/playground/target/debug/deps/libquick_error-73bf4d47b8e0946f.rmeta --extern quote=/playground/target/debug/deps/libquote-28f6da0b487d7867.rmeta --extern rand_0_7_3=/playground/target/debug/deps/librand-4bc4fa282dff2114.rmeta --extern rand=/playground/target/debug/deps/librand-57e804266b74ff6d.rmeta --extern rand_chacha_0_2_2=/playground/target/debug/deps/librand_chacha-b8619118511a1def.rmeta --extern rand_chacha=/playground/target/debug/deps/librand_chacha-fec8269fa383021e.rmeta --extern rand_core_0_5_1=/playground/target/debug/deps/librand_core-b7dc4e0d18959f21.rmeta --extern rand_core=/playground/target/debug/deps/librand_core-90c42f306c0a67c6.rmeta --extern rand_distr=/playground/target/debug/deps/librand_distr-fd8a48ab1041ab25.rmeta --extern rand_hc=/playground/target/debug/deps/librand_hc-184f8043827622bb.rmeta --extern rand_pcg=/playground/target/debug/deps/librand_pcg-c02b643b3c706d6d.rmeta --extern rawpointer=/playground/target/debug/deps/librawpointer-80c34ebe31e8881e.rmeta --extern rayon=/playground/target/debug/deps/librayon-efa02685d840aaa2.rmeta --extern rayon_core=/playground/target/debug/deps/librayon_core-47767e9c1bb1e123.rmeta --extern regex=/playground/target/debug/deps/libregex-a743d6793e59d4c0.rmeta --extern regex_automata=/playground/target/debug/deps/libregex_automata-02b61cebf24eb8c0.rmeta --extern regex_syntax=/playground/target/debug/deps/libregex_syntax-a3684af575b07253.rmeta --extern remove_dir_all=/playground/target/debug/deps/libremove_dir_all-5c0a87a169460981.rmeta --extern reqwest=/playground/target/debug/deps/libreqwest-eddd8d69dcb85115.rmeta --extern ring=/playground/target/debug/deps/libring-309f803389994ae1.rmeta --extern rusqlite=/playground/target/debug/deps/librusqlite-f61ee64936c66008.rmeta --extern rustc_demangle=/playground/target/debug/deps/librustc_demangle-9c9497fccfbeb6f4.rmeta --extern rustc_version=/playground/target/debug/deps/librustc_version-75e8a0114436076c.rmeta --extern ryu=/playground/target/debug/deps/libryu-fc722432573e8d7d.rmeta --extern same_file=/playground/target/debug/deps/libsame_file-aeaece771fe5a4c2.rmeta --extern scoped_threadpool=/playground/target/debug/deps/libscoped_threadpool-c6d356f1e1f61de2.rmeta --extern scopeguard=/playground/target/debug/deps/libscopeguard-a0d059c36fcc038c.rmeta --extern select=/playground/target/debug/deps/libselect-ff6802aec982cf06.rmeta --extern semver_0_11_0=/playground/target/debug/deps/libsemver-a62cee498f3c98c6.rmeta --extern semver=/playground/target/debug/deps/libsemver-89ee22c77159f823.rmeta --extern semver_parser=/playground/target/debug/deps/libsemver_parser-f4ec13d2daacd2c2.rmeta --extern serde=/playground/target/debug/deps/libserde-3be3aabe22700213.rmeta --extern serde_value=/playground/target/debug/deps/libserde_value-1c51d967072b1146.rmeta --extern serde_derive=/playground/target/debug/deps/libserde_derive-c418fc817a4e665f.so --extern serde_json=/playground/target/debug/deps/libserde_json-11ef87148e2682c3.rmeta --extern serde_urlencoded=/playground/target/debug/deps/libserde_urlencoded-4801cebf46d8a639.rmeta --extern serde_yaml=/playground/target/debug/deps/libserde_yaml-8e97ddd36fcbdb88.rmeta --extern sha2=/playground/target/debug/deps/libsha2-480edd035d499151.rmeta --extern simba=/playground/target/debug/deps/libsimba-5ad51f737fc567e7.rmeta --extern siphasher=/playground/target/debug/deps/libsiphasher-0b689d4e61ff3bad.rmeta --extern slab=/playground/target/debug/deps/libslab-8360eda8f600df05.rmeta --extern smallvec=/playground/target/debug/deps/libsmallvec-9e48c7819f40ec21.rmeta --extern smawk=/playground/target/debug/deps/libsmawk-8e38b6e5a5778769.rmeta --extern socket2=/playground/target/debug/deps/libsocket2-0838fcc7aeaf3135.rmeta --extern spin=/playground/target/debug/deps/libspin-459161897768fba8.rmeta --extern standback=/playground/target/debug/deps/libstandback-766c95787038fe25.rmeta --extern string_cache=/playground/target/debug/deps/libstring_cache-bbb6e0d504d96d08.rmeta --extern string_cache_codegen=/playground/target/debug/deps/libstring_cache_codegen-7d8e96147bf05d1b.rmeta --extern stringprep=/playground/target/debug/deps/libstringprep-28c2833df3cff0ef.rmeta --extern strsim_0_8_0=/playground/target/debug/deps/libstrsim-1094d6105a6b9102.rmeta --extern strsim=/playground/target/debug/deps/libstrsim-596fcd52b29ab067.rmeta --extern subtle=/playground/target/debug/deps/libsubtle-9abff15ff12775b5.rmeta --extern syn=/playground/target/debug/deps/libsyn-9d9f6aef6969da15.rmeta --extern synstructure=/playground/target/debug/deps/libsynstructure-7579161d5937eb71.rmeta --extern tar=/playground/target/debug/deps/libtar-5b795d685e9295e6.rmeta --extern tempfile=/playground/target/debug/deps/libtempfile-a887fbeb3c565c67.rmeta --extern tendril=/playground/target/debug/deps/libtendril-0de8141ddc771892.rmeta --extern termcolor=/playground/target/debug/deps/libtermcolor-46403bcbadff7ce9.rmeta --extern textwrap_0_11_0=/playground/target/debug/deps/libtextwrap-34d11634d35d2890.rmeta --extern textwrap=/playground/target/debug/deps/libtextwrap-9cac5c85790b3b1f.rmeta --extern thiserror=/playground/target/debug/deps/libthiserror-385b7d90f4c0e299.rmeta --extern thiserror_impl=/playground/target/debug/deps/libthiserror_impl-a1ce8d13d7bf50de.so --extern thread_id=/playground/target/debug/deps/libthread_id-7fe87ffdec07bebf.rmeta --extern thread_local=/playground/target/debug/deps/libthread_local-c41cf3494ad4d6ea.rmeta --extern threadpool=/playground/target/debug/deps/libthreadpool-1caecdbf14adddfa.rmeta --extern tiff=/playground/target/debug/deps/libtiff-1cd50ca84da2362a.rmeta --extern time_0_1_44=/playground/target/debug/deps/libtime-7db81ef2db6e706c.rmeta --extern time=/playground/target/debug/deps/libtime-469cbffb33911a86.rmeta --extern time_macros=/playground/target/debug/deps/libtime_macros-e01e99c658446be3.rmeta --extern time_macros_impl=/playground/target/debug/deps/libtime_macros_impl-056a36a6471c9fcb.so --extern tinyvec=/playground/target/debug/deps/libtinyvec-d5d38abfbdb27dc7.rmeta --extern tinyvec_macros=/playground/target/debug/deps/libtinyvec_macros-81d45e7b064eddd1.rmeta --extern tokio=/playground/target/debug/deps/libtokio-89dc1aacc690db7f.rmeta --extern tokio_native_tls=/playground/target/debug/deps/libtokio_native_tls-ee3ddcd438ed4095.rmeta --extern tokio_postgres=/playground/target/debug/deps/libtokio_postgres-0c92c5709bbf800a.rmeta --extern tokio_util=/playground/target/debug/deps/libtokio_util-46bc61a788a4663b.rmeta --extern toml=/playground/target/debug/deps/libtoml-f8a3e338d8b2ec8c.rmeta --extern tower_service=/playground/target/debug/deps/libtower_service-81097ae8f3ca822e.rmeta --extern tracing=/playground/target/debug/deps/libtracing-131dd695f9a3faa0.rmeta --extern tracing_core=/playground/target/debug/deps/libtracing_core-fb9824e74e5fe1d0.rmeta --extern traitobject=/playground/target/debug/deps/libtraitobject-65b44d6642786d87.rmeta --extern try_lock=/playground/target/debug/deps/libtry_lock-e4ac6437db956571.rmeta --extern typemap=/playground/target/debug/deps/libtypemap-ac1698b586ce6597.rmeta --extern typenum=/playground/target/debug/deps/libtypenum-9e7e9f850d4382a6.rmeta --extern ucd_trie=/playground/target/debug/deps/libucd_trie-45ec7daed9838d32.rmeta --extern unicase=/playground/target/debug/deps/libunicase-101756c05806db13.rmeta --extern unicode_bidi=/playground/target/debug/deps/libunicode_bidi-3139b89156d0786c.rmeta --extern unicode_normalization=/playground/target/debug/deps/libunicode_normalization-9e911e4edf677bf4.rmeta --extern unicode_segmentation=/playground/target/debug/deps/libunicode_segmentation-7eaecf846a4a004b.rmeta --extern unicode_width=/playground/target/debug/deps/libunicode_width-44d374a05dce6145.rmeta --extern unicode_xid=/playground/target/debug/deps/libunicode_xid-b18ccd133c106cd2.rmeta --extern unsafe_any=/playground/target/debug/deps/libunsafe_any-fbd575c915548e61.rmeta --extern untrusted=/playground/target/debug/deps/libuntrusted-524f673fcd7df21f.rmeta --extern url=/playground/target/debug/deps/liburl-273ff0298e451cf3.rmeta --extern utf8=/playground/target/debug/deps/libutf8-03bfb833d07e7ce7.rmeta --extern uuid=/playground/target/debug/deps/libuuid-6b01ff66b69be148.rmeta --extern vec_map=/playground/target/debug/deps/libvec_map-3e0d68bb2400498e.rmeta --extern version_check=/playground/target/debug/deps/libversion_check-8621e40e791d7e0b.rmeta --extern walkdir=/playground/target/debug/deps/libwalkdir-9288cdb139d035e8.rmeta --extern want=/playground/target/debug/deps/libwant-c21a0912f1e5429f.rmeta --extern weezl=/playground/target/debug/deps/libweezl-ef532351b91f45d8.rmeta --extern winapi=/playground/target/debug/deps/libwinapi-769de98f80380deb.rmeta --extern xattr=/playground/target/debug/deps/libxattr-31db13a661348bef.rmeta --extern xml5ever=/playground/target/debug/deps/libxml5ever-b1f2a27a4cf21995.rmeta --extern yaml_rust=/playground/target/debug/deps/libyaml_rust-bcd6d9b5400b9c0e.rmeta -L native=/playground/target/debug/build/libsqlite3-sys-a91e742d94f16749/out -L native=/playground/target/debug/build/ring-8241b1316fef72ea/out` (signal: 4, SIGILL: illegal instruction)

[hellow554]

Somewhat smaller, but I guess that more can be done:

#![feature(const_generics, const_fn_trait_bound, const_evaluatable_checked)]

trait _Contains<T> {
    const does_contain: bool;
}

trait Contains<T, const Satisfied: bool> {}

trait Delegates<T> {}

impl<T, U> Delegates<U> for T where T: Contains<U, true> {}

const fn contains<A, B>() -> bool
where
    A: _Contains<B>,
{
    A::does_contain
}

impl<T, U> Contains<T, { contains::<T, U>() }> for U where T: _Contains<U> {}

fn writes_to_path<C>(cap: &C) {
    writes_to_specific_path(&cap);
}

fn writes_to_specific_path<C: Delegates<()>>(cap: &C) {}

fn main() {}