Building fatfs crate for the powerpc-unknown-linux-gnu target with default-features = false crashed the compiler

[aruiz]

Code

I just imported the fatfs crate from master(87fc1ed5) and tried to build it agasint the powerpc-unknown-linux-gnu target

Meta

rustc --version --verbose:

[1015][aruiz@artanis ~/src/ieee1275-rs/template]$ rustc --version --verbose
rustc 1.62.0-nightly (60e50fc1c 2022-04-04)
binary: rustc
commit-hash: 60e50fc1cfe0bb693a5f4f93eb83ef70854531e3
commit-date: 2022-04-04
host: x86_64-unknown-linux-gnu
release: 1.62.0-nightly
LLVM version: 14.0.0

Error output

[1014][aruiz@artanis ~/src/ieee1275-rs/template]$ cargo build --target powerpc-unknown-linux-gnu --release
   Compiling fatfs v0.4.0 (/home/aruiz/src/ieee1275-rs/template/rust-fatfs)
thread 'rustc' panicked at 'Collection VecMap(
    [
        (
            OpaqueTypeKey {
                def_id: DefId(0:949 ~ fatfs[f379]::fs::{impl#9}::cluster_iter::{opaque#0}),
                substs: [
                    IO,
                    TP,
                    OCC,
                    ReFree(DefId(0:948 ~ fatfs[f379]::fs::{impl#9}::cluster_iter), BrAnon(0)),
                ],
            },
            OpaqueHiddenType {
                span: rust-fatfs/src/fs.rs:472:9: 472:65 (#0),
                ty: impl fs::ReadWriteSeek + io::IoBase<Error = error::Error<<IO as io::IoBase>::Error>>,
            },
        ),
        (
            OpaqueTypeKey {
                def_id: DefId(0:949 ~ fatfs[f379]::fs::{impl#9}::cluster_iter::{opaque#0}),
                substs: [
                    IO,
                    TP,
                    OCC,
                    ReFree(DefId(0:948 ~ fatfs[f379]::fs::{impl#9}::cluster_iter), BrAnon(0)),
                ],
            },
            OpaqueHiddenType {
                span: rust-fatfs/src/fs.rs:472:9: 472:65 (#0),
                ty: impl fs::ReadWriteSeek + io::IoBase<Error = error::Error<<IO as io::IoBase>::Error>>,
            },
        ),
    ],
) should have just one matching element', /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/compiler/rustc_data_structures/src/vec_map.rs:73:9
stack backtrace:
   0:     0x7f8220dd81dd - std::backtrace_rs::backtrace::libunwind::trace::h7c0513382e856dcd
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f8220dd81dd - std::backtrace_rs::backtrace::trace_unsynchronized::hfbd98a434da97507
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f8220dd81dd - std::sys_common::backtrace::_print_fmt::h51726a53848f2bc2
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7f8220dd81dd - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h42dee42c8f9c4223
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7f8220e3202c - core::fmt::write::h1b836a6030da7618
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/core/src/fmt/mod.rs:1194:17
   5:     0x7f8220dc9731 - std::io::Write::write_fmt::h0e20df5d0a1ff12d
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/io/mod.rs:1655:15
   6:     0x7f8220ddb2c5 - std::sys_common::backtrace::_print::hef3e7f4b6e8c4703
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7f8220ddb2c5 - std::sys_common::backtrace::print::h0d49891b8a1c7aa0
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7f8220ddb2c5 - std::panicking::default_hook::{{closure}}::h1be164303b214361
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/panicking.rs:295:22
   9:     0x7f8220ddaf79 - std::panicking::default_hook::h05b86375012ed091
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/panicking.rs:314:9
  10:     0x7f8221558d41 - rustc_driver[347dc621c1486df4]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f8220ddba10 - std::panicking::rust_panic_with_hook::ha6d95641dad8505e
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/panicking.rs:702:17
  12:     0x7f8220ddb847 - std::panicking::begin_panic_handler::{{closure}}::ha42f0ef1b4490fd3
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/panicking.rs:588:13
  13:     0x7f8220dd8694 - std::sys_common::backtrace::__rust_end_short_backtrace::h6b819a9afadb4a4c
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/sys_common/backtrace.rs:138:18
  14:     0x7f8220ddb579 - rust_begin_unwind
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/panicking.rs:584:5
  15:     0x7f8220d9f6c3 - core::panicking::panic_fmt::h6056698337b027c1
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/core/src/panicking.rs:143:14
  16:     0x7f8222a509a5 - rustc_typeck[6fd95f0af9e597e2]::collect::type_of::type_of
  17:     0x7f8222ecffde - rustc_query_system[f7eabd9288284674]::query::plumbing::get_query::<rustc_query_impl[4f491867fe8b1385]::queries::type_of, rustc_query_impl[4f491867fe8b1385]::plumbing::QueryCtxt>
  18:     0x7f8222a6138b - rustc_typeck[6fd95f0af9e597e2]::check::check::check_item_type
  19:     0x7f8222a40f9b - <rustc_middle[5108af4071a4b383]::hir::map::Map>::visit_item_likes_in_module::<rustc_typeck[6fd95f0af9e597e2]::check::CheckItemTypesVisitor>
  20:     0x7f8223748a6c - rustc_typeck[6fd95f0af9e597e2]::check::check::check_mod_item_types
  21:     0x7f8222e8f4be - rustc_query_system[f7eabd9288284674]::query::plumbing::try_execute_query::<rustc_query_impl[4f491867fe8b1385]::plumbing::QueryCtxt, rustc_query_system[f7eabd9288284674]::query::caches::DefaultCache<rustc_span[508422916312c451]::def_id::LocalDefId, ()>>
  22:     0x7f822395ffe3 - rustc_query_system[f7eabd9288284674]::query::plumbing::get_query::<rustc_query_impl[4f491867fe8b1385]::queries::check_mod_item_types, rustc_query_impl[4f491867fe8b1385]::plumbing::QueryCtxt>
  23:     0x7f8223728c7c - <rustc_middle[5108af4071a4b383]::hir::map::Map>::for_each_module::<rustc_typeck[6fd95f0af9e597e2]::check_crate::{closure#6}::{closure#0}>
  24:     0x7f82236f70f8 - <rustc_session[96f22c715fe2ba33]::session::Session>::time::<(), rustc_typeck[6fd95f0af9e597e2]::check_crate::{closure#6}>
  25:     0x7f82236e9b18 - rustc_typeck[6fd95f0af9e597e2]::check_crate
  26:     0x7f82234675c7 - rustc_interface[9deadcc41e3e1d97]::passes::analysis
  27:     0x7f822392bade - rustc_query_system[f7eabd9288284674]::query::plumbing::try_execute_query::<rustc_query_impl[4f491867fe8b1385]::plumbing::QueryCtxt, rustc_query_system[f7eabd9288284674]::query::caches::DefaultCache<(), core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>>>
  28:     0x7f822396ec7e - rustc_query_system[f7eabd9288284674]::query::plumbing::get_query::<rustc_query_impl[4f491867fe8b1385]::queries::analysis, rustc_query_impl[4f491867fe8b1385]::plumbing::QueryCtxt>
  29:     0x7f822342d331 - <rustc_interface[9deadcc41e3e1d97]::passes::QueryContext>::enter::<rustc_driver[347dc621c1486df4]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>>
  30:     0x7f82234474f8 - <rustc_interface[9deadcc41e3e1d97]::interface::Compiler>::enter::<rustc_driver[347dc621c1486df4]::run_compiler::{closure#1}::{closure#2}, core[75ba8002d1a2f8a8]::result::Result<core[75ba8002d1a2f8a8]::option::Option<rustc_interface[9deadcc41e3e1d97]::queries::Linker>, rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>>
  31:     0x7f822342caef - rustc_span[508422916312c451]::with_source_map::<core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>, rustc_interface[9deadcc41e3e1d97]::interface::create_compiler_and_run<core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>, rustc_driver[347dc621c1486df4]::run_compiler::{closure#1}>::{closure#1}>
  32:     0x7f822345b574 - rustc_interface[9deadcc41e3e1d97]::interface::create_compiler_and_run::<core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>, rustc_driver[347dc621c1486df4]::run_compiler::{closure#1}>
  33:     0x7f822342b282 - <scoped_tls[e4ea34ec8e39d533]::ScopedKey<rustc_span[508422916312c451]::SessionGlobals>>::set::<rustc_interface[9deadcc41e3e1d97]::interface::run_compiler<core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>, rustc_driver[347dc621c1486df4]::run_compiler::{closure#1}>::{closure#0}, core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>>
  34:     0x7f8223440e2f - std[44828cfc6226ecc0]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[9deadcc41e3e1d97]::util::run_in_thread_pool_with_globals<rustc_interface[9deadcc41e3e1d97]::interface::run_compiler<core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>, rustc_driver[347dc621c1486df4]::run_compiler::{closure#1}>::{closure#0}, core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>>::{closure#0}, core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>>
  35:     0x7f822342c5a9 - <<std[44828cfc6226ecc0]::thread::Builder>::spawn_unchecked_<rustc_interface[9deadcc41e3e1d97]::util::run_in_thread_pool_with_globals<rustc_interface[9deadcc41e3e1d97]::interface::run_compiler<core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>, rustc_driver[347dc621c1486df4]::run_compiler::{closure#1}>::{closure#0}, core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>>::{closure#0}, core[75ba8002d1a2f8a8]::result::Result<(), rustc_errors[9df6ff0b021522ae]::ErrorGuaranteed>>::{closure#1} as core[75ba8002d1a2f8a8]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  36:     0x7f8220de5c03 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha3103b8979c0f9bf
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/alloc/src/boxed.rs:1861:9
  37:     0x7f8220de5c03 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h40f489084d50ad12
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/alloc/src/boxed.rs:1861:9
  38:     0x7f8220de5c03 - std::sys::unix::thread::Thread::new::thread_start::h7c546e3028c3fa8d
                               at /rustc/60e50fc1cfe0bb693a5f4f93eb83ef70854531e3/library/std/src/sys/unix/thread.rs:108:17
  39:     0x7f8220ba680a - start_thread
  40:     0x7f8220b46430 - __clone3
  41:                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 1.62.0-nightly (60e50fc1c 2022-04-04) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C opt-level=3 -C panic=abort -C embed-bitcode=no -C linker=ppc64le-linux-gnu-gcc -C strip=symbols -C link-args=-nostdlib -ffreestanding -fPIC -Ttext 100000 -mbig-endian -C target-feature=+crt-static

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

query stack during panic:
#0 [type_of] computing type of `fs::<impl at rust-fatfs/src/fs.rs:343:1: 624:2>::cluster_iter::{opaque#0}`
#1 [check_mod_item_types] checking item types in module `fs`
#2 [analysis] running analysis passes on this crate
end of query stack
error: could not compile `fatfs`

[JohnTitor]

Possibly a duplicate of #95538, could you try updating to newer nightly?

[aruiz]

Indeed, all fixed, thanks!

[JohnTitor]

Great, closing as fixed.