ICE in 1.49.0 nightly 2020-11-01 on windows #78660

CleanCut · 2020-11-02T04:47:20Z

Code

Simply building the rusty-xinput crate in the dependency chain seems to have triggered it. See https://github.com/bevyengine/bevy/pull/769/checks?check_run_id=1340257075

Error output

thread 'rustc' panicked at 'explicit panic', compiler\rustc_middle\src\lint.rs:287:37
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

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 1.49.0-nightly (b20253260 2020-11-01) running on x86_64-pc-windows-msvc

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C debuginfo=0 --crate-type lib

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

query stack during panic:
#0 [analysis] running analysis passes on this crate
end of query stack
error: could not compile `rusty-xinput`

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

Backtrace

I'm sorry - I don't have access to a windows environment to reproduce this!

The text was updated successfully, but these errors were encountered:

JohnTitor · 2020-11-02T05:59:12Z

I think #75534 is the cause, cc @Aaron1011.
Note that you should set RUSTFLAGS="-D warnings" to reproduce it. I don't feel this is Windows-specific but it just depends on the Windows-specific crate, marking E-needs-mcve.

Backtrace

thread 'rustc' panicked at 'explicit panic', compiler\rustc_middle\src\lint.rs:287:37
stack backtrace:
   0:     0x7ff863329e2e - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h34f33193f2c6e691
   1:     0x7ff863357e7b - core::fmt::write::h435be716304d26a1
   2:     0x7ff86331b788 - <std::io::IoSlice as core::fmt::Debug>::fmt::h5c209409e89b6b83
   3:     0x7ff86332f36d - std::panicking::take_hook::h78aad67ccc0974f2
   4:     0x7ff86332ef48 - std::panicking::take_hook::h78aad67ccc0974f2
   5:     0x7ff8480a19b7 - rustc_driver::report_ice::hef358031e18df712
   6:     0x7ff86332fe80 - std::panicking::rust_panic_with_hook::h4d71ff73fb7c451d
   7:     0x7ff84c5ac074 - rustc_middle::ty::structural_impls::<impl rustc_middle::ty::context::Lift for rustc_ast::ast::InlineAsmOptions>::lift_to_tcx::h042fb894ab77ec23
   8:     0x7ff84c5abf6f - rustc_middle::ty::structural_impls::<impl rustc_middle::ty::context::Lift for rustc_ast::ast::InlineAsmOptions>::lift_to_tcx::h042fb894ab77ec23
   9:     0x7ff84c5abfad - rustc_middle::ty::structural_impls::<impl rustc_middle::ty::context::Lift for rustc_ast::ast::InlineAsmOptions>::lift_to_tcx::h042fb894ab77ec23
  10:     0x7ff84c5c6d01 - rustc_middle::lint::struct_lint_level::struct_lint_level_impl::h8ed4092b7d535841
  11:     0x7ff84bcec813 - <rustc_lint::array_into_iter::ArrayIntoIter as rustc_lint::passes::LateLintPass>::check_expr::h876461b2d5357325
  12:     0x7ff84bcacc05 - <rustc_lint::BuiltinCombinedLateLintPass as rustc_lint::passes::LateLintPass>::check_expr::hdeaf5fd3da5c9014
  13:     0x7ff84827d272 - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  14:     0x7ff84821224f - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  15:     0x7ff84827d27d - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  16:     0x7ff84821240e - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  17:     0x7ff84827d27d - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  18:     0x7ff84827d27d - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  19:     0x7ff84827d372 - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  20:     0x7ff84821252c - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  21:     0x7ff84827d27d - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  22:     0x7ff84827d6e3 - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  23:     0x7ff84827db47 - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  24:     0x7ff84820efa8 - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  25:     0x7ff8482809a3 - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  26:     0x7ff84821354b - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  27:     0x7ff8482803c3 - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  28:     0x7ff84820e36e - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  29:     0x7ff84827368d - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  30:     0x7ff848296921 - <rustc_interface::proc_macro_decls::Finder as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::h95eaafd33dc1f3b3
  31:     0x7ff8482bd8ae - rustc_interface::passes::QueryContext::print_stats::h960d22dc06b880d2
  32:     0x7ff8480e2d00 - rustc_ast::util::parser::prec_let_scrutinee_needs_par::h3e367fa31fb5b7e3
  33:     0x7ff8480a52c7 - <rustc_driver::Compilation as core::fmt::Debug>::fmt::ha64461c03fe53d77
  34:     0x7ff8480bd5b6 - rustc_ast::util::parser::prec_let_scrutinee_needs_par::h3e367fa31fb5b7e3
  35:     0x7ff848059e73 - <rustc_span::symbol::SymbolStr as core::fmt::Display>::fmt::hee7667dfc0b493b5
  36:     0x7ff8480e80db - rustc_ast::util::parser::prec_let_scrutinee_needs_par::h3e367fa31fb5b7e3
  37:     0x7ff8480c0d16 - rustc_ast::util::parser::prec_let_scrutinee_needs_par::h3e367fa31fb5b7e3
  38:     0x7ff8480eb9dd - rustc_ast::util::parser::prec_let_scrutinee_needs_par::h3e367fa31fb5b7e3
  39:     0x7ff86333ffb7 - std::sys::windows::thread::Thread::new::h4a8ee57959003089
  40:     0x7ff8c6267c24 - BaseThreadInitThunk
  41:     0x7ff8c69acea1 - RtlUserThreadStart

error: internal compiler error: unexpected panic

Aaron1011 · 2020-11-02T06:16:08Z

MCVE: run rustc -D warnings --cap-lints allow bug.rs on:

// bug.rs
fn main() {
    ["hi"].into_iter();
}

JohnTitor · 2020-11-02T19:27:45Z

Assigning P-medium as discussed as part of the Prioritization Working Group procedure and removing I-prioritize.

asomers · 2020-11-03T02:33:58Z

I got the same error on Linux while compiling lazy_static. https://cirrus-ci.com/task/6280736288276480 .

Aaron1011 · 2020-11-03T02:40:41Z

This will be fixed by #78663

Temporarily downgrade rustc nightly during CI minver to workaround a Rustc bug. rust-lang/rust#78660

…tmandry Fix ICE when a future-incompat-report has its command-line level capped Fixes rust-lang#78660 With PR rust-lang#75534 merged, we now run more lint-related code for future-incompat-report, even when their final level is Allow. Some lint-related code was not expecting `Level::Allow`, and had an explicit panic. This PR explicitly tracks the lint level set on the command line before `--cap-lints` is applied. This is used to emit a more precise error note (e.g. we don't say that `-W lint-name` was specified on the command line just because a lint was capped to Warn). As a result, we can now correctly emit a note that `-A` was used if we got `Level::Allow` from the command line (before the cap is applied).

Now that rust-lang/rust#78660 is fixed

CleanCut added C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Nov 2, 2020

This was referenced Nov 2, 2020

Convenient way to add minimal plugins for a headless server bevyengine/bevy#767

Merged

Move ElementState to top-level of bevy_input. bevyengine/bevy#769

Merged

rustbot added the I-prioritize Issue: Indicates that prioritization has been requested for this issue. label Nov 2, 2020

Aaron1011 self-assigned this Nov 2, 2020

JohnTitor removed the E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example label Nov 2, 2020

Aaron1011 mentioned this issue Nov 2, 2020

Fix ICE when a future-incompat-report has its command-line level capped #78663

Merged

JohnTitor added P-medium Medium priority and removed I-prioritize Issue: Indicates that prioritization has been requested for this issue. labels Nov 2, 2020

asomers added a commit to asomers/mockall that referenced this issue Nov 3, 2020

Workaround a Rust nightly bug

58a9dc3

Temporarily downgrade rustc nightly during CI minver to workaround a Rustc bug. rust-lang/rust#78660

asomers added a commit to asomers/mockall that referenced this issue Nov 3, 2020

Workaround a Rust nightly bug

968c47d

Temporarily downgrade rustc nightly during CI minver to workaround a Rustc bug. rust-lang/rust#78660

asomers added a commit to asomers/mockall that referenced this issue Nov 3, 2020

Workaround a Rust nightly bug

5926def

Temporarily downgrade rustc nightly during CI minver to workaround a Rustc bug. rust-lang/rust#78660

bors closed this as completed in 6c1f15f Nov 3, 2020

bkchr mentioned this issue Nov 3, 2020

thread 'rustc' panicked at 'explicit panic', compiler/rustc_middle/src/lint.rs:287:37 paritytech/substrate#7481

Closed

asomers added a commit to asomers/mockall that referenced this issue Nov 5, 2020

Revert 5926def.

abffba7

Now that rust-lang/rust#78660 is fixed

asomers mentioned this issue Nov 5, 2020

Revert 5926def2a58d60c3d63a109926a1498779c35744. asomers/mockall#230

Merged

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ICE in 1.49.0 nightly 2020-11-01 on windows #78660

ICE in 1.49.0 nightly 2020-11-01 on windows #78660

CleanCut commented Nov 2, 2020

JohnTitor commented Nov 2, 2020

Aaron1011 commented Nov 2, 2020

JohnTitor commented Nov 2, 2020 •

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asomers commented Nov 3, 2020

Aaron1011 commented Nov 3, 2020

ICE in 1.49.0 nightly 2020-11-01 on windows #78660

ICE in 1.49.0 nightly 2020-11-01 on windows #78660

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CleanCut commented Nov 2, 2020

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JohnTitor commented Nov 2, 2020

Aaron1011 commented Nov 2, 2020

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asomers commented Nov 3, 2020

Aaron1011 commented Nov 3, 2020

JohnTitor commented Nov 2, 2020 •

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