failed to lift QueryResult

[oli-obk]

$ rustc --version                    
rustc 1.26.0-nightly (a04b88d19 2018-03-19)
$ cargo --version                    
cargo 1.26.0-nightly (d6c3983fe 2018-03-16)
$ cargo clippy --version             
0.0.189

~/rmp-rpc ❯❯❯ cargo clippy                                                                                                                                                             master
lib: rmp-rpc
    Updating registry `https://github.com/rust-lang/crates.io-index`
   Compiling rmp-rpc v0.2.0 (file:///home/corentih/rmp-rpc)                     
error: internal compiler error: librustc/infer/canonical.rs:703: failed to lift `QueryResult { var_values: CanonicalVarValues { var_values: [] }, region_constraints: QueryRegionConstraints { region_outlives: [(ReErased, '?0), ('?0, ReErased)], ty_outlives: [] }, certainty: Proven, value: NormalizationResult { normalized_ty: std::collections::hash_map::RandomState } }`, canonicalized from `QueryResult { var_values: CanonicalVarValues { var_values: [] }, region_constraints: QueryRegionConstraints { region_outlives: [(ReErased, '_#0r), ('_#0r, ReErased)], ty_outlives: [] }, certainty: Proven, value: NormalizationResult { normalized_ty: std::collections::hash_map::RandomState } }`

thread 'rustc' panicked at 'Box<Any>', librustc_errors/lib.rs:543:9
note: Run with `RUST_BACKTRACE=1` for a backtrace.

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

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.26.0-nightly (a04b88d19 2018-03-19) running on x86_64-unknown-linux-gnu

note: compiler flags: -C debuginfo=2 -C incremental --crate-type lib

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

error: Could not compile `rmp-rpc`.

To learn more, run the command again with --verbose.

original issue: rust-lang/rust#49114 (comment)

[lorepozo]

For you that was happening with std::collections::hash_map::RandomState, I'm also seeing it with rayon_core::registry::WorkerThread:

$ cargo clippy --version
0.0.190
$ rustc --version
rustc 1.26.0-nightly (188e693b3 2018-03-26)
$ cargo clippy
error: internal compiler error: librustc/infer/canonical.rs:707: failed to lift `QueryResult { var_values: CanonicalVarValues { var_values: [] }, region_constraints: QueryRegionConstraints { region_outlives: [(ReErased, '?0), ('?0, ReErased)], ty_outlives: [] }, certainty: Proven, value: NormalizationResult { normalized_ty: *const rayon_core::registry::WorkerThread } }`, canonicalized from `QueryResult { var_values: CanonicalVarValues { var_values: [] }, region_constraints: QueryRegionConstraints { region_outlives: [(ReErased, '_#0r), ('_#0r, ReErased)], ty_outlives: [] }, certainty: Proven, value: NormalizationResult { normalized_ty: *const rayon_core::registry::WorkerThread } }`

thread 'rustc' panicked at 'Box<Any>', librustc_errors/lib.rs:543:9
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
   1: std::sys_common::backtrace::print
   2: std::panicking::default_hook::{{closure}}
   3: std::panicking::default_hook
   4: core::ops::function::Fn::call
   5: std::panicking::rust_panic_with_hook
   6: std::panicking::begin_panic
   7: rustc_errors::Handler::bug
   8: rustc::session::opt_span_bug_fmt::{{closure}}
   9: rustc::ty::context::tls::with_opt::{{closure}}
  10: <std::thread::local::LocalKey<T>>::try_with
  11: <std::thread::local::LocalKey<T>>::with
  12: rustc::ty::context::tls::with
  13: rustc::ty::context::tls::with_opt
  14: rustc::session::opt_span_bug_fmt
  15: rustc::session::bug_fmt
  16: rustc::infer::canonical::Canonicalizer::canonicalize
  17: rustc_traits::util::make_query_response
  18: rustc::ty::context::tls::enter
  19: rustc::infer::InferCtxtBuilder::enter
  20: rustc_traits::normalize_projection_ty::normalize_projection_ty
  21: rustc::dep_graph::graph::DepGraph::with_ignore
  22: rustc_errors::Handler::track_diagnostics
  23: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::cycle_check
  24: rustc::ty::maps::<impl rustc::ty::maps::queries::normalize_projection_ty<'tcx>>::try_get
  25: rustc::ty::maps::TyCtxtAt::normalize_projection_ty
  26: <rustc::traits::query::normalize::QueryNormalizer<'cx, 'gcx, 'tcx> as rustc::ty::fold::TypeFolder<'gcx, 'tcx>>::fold_ty
  27: rustc::traits::query::normalize::<impl rustc::infer::at::At<'cx, 'gcx, 'tcx>>::normalize
  28: rustc::ty::context::tls::enter
  29: rustc_traits::normalize_erasing_regions::normalize_ty_after_erasing_regions
  30: rustc::dep_graph::graph::DepGraph::with_ignore
  31: rustc_errors::Handler::track_diagnostics
  32: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::cycle_check
  33: rustc::ty::maps::<impl rustc::ty::maps::queries::normalize_ty_after_erasing_regions<'tcx>>::try_get
  34: rustc::ty::maps::TyCtxtAt::normalize_ty_after_erasing_regions
  35: <rustc::traits::query::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder<'cx, 'tcx> as rustc::ty::fold::TypeFolder<'tcx, 'tcx>>::fold_ty
  36: <rustc_data_structures::accumulate_vec::AccumulateVec<A> as core::iter::traits::FromIterator<<A as rustc_data_structures::array_vec::Array>::Element>>::from_iter
  37: rustc::ty::fold::TypeFoldable::fold_with
  38: rustc::traits::query::normalize_erasing_regions::<impl rustc::ty::context::TyCtxt<'cx, 'tcx, 'tcx>>::normalize_erasing_late_bound_regions
  39: rustc_trans::mir::block::<impl rustc_trans::mir::FunctionCx<'a, 'tcx>>::trans_terminator
  40: rustc_trans::mir::trans_mir
  41: rustc_trans::base::trans_instance
  42: rustc_trans::trans_item::MonoItemExt::define
  43: rustc_trans::base::compile_codegen_unit
  44: rustc::ty::maps::<impl rustc::ty::maps::queries::compile_codegen_unit<'tcx>>::compute_result
  45: rustc::dep_graph::graph::DepGraph::with_task_impl
  46: rustc_errors::Handler::track_diagnostics
  47: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::cycle_check
  48: rustc::ty::maps::<impl rustc::ty::maps::queries::compile_codegen_unit<'tcx>>::force
  49: rustc::ty::maps::<impl rustc::ty::maps::queries::compile_codegen_unit<'tcx>>::try_get
  50: rustc::ty::maps::TyCtxtAt::compile_codegen_unit
  51: rustc::ty::maps::<impl rustc::ty::context::TyCtxt<'a, 'tcx, 'lcx>>::compile_codegen_unit
  52: rustc_trans::base::trans_crate
  53: <rustc_trans::LlvmTransCrate as rustc_trans_utils::trans_crate::TransCrate>::trans_crate
  54: rustc::util::common::time
  55: rustc_driver::driver::phase_4_translate_to_llvm
  56: rustc_driver::driver::compile_input::{{closure}}
  57: <std::thread::local::LocalKey<T>>::with
  58: <std::thread::local::LocalKey<T>>::with
  59: rustc::ty::context::TyCtxt::create_and_enter
  60: rustc_driver::driver::compile_input
  61: rustc_driver::run_compiler_impl
  62: syntax::with_globals
  63: rustc_driver::run_compiler
error: aborting due to previous error


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

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.26.0-nightly (188e693b3 2018-03-26) running on x86_64-apple-darwin

note: compiler flags: -C debuginfo=2 -C incremental --crate-type lib

edit: also worth note, removing the following line from my code prevents this (but gives me warnings that I want to allow):

#![cfg_attr(feature = "cargo-clippy", allow(doc_markdown))]

[little-dude]

Let me know if you need any more info @oli-obk