ice: -Zmeta-stats `Bad file descriptor`

[matthiaskrgr]

Code

rustc -Zmeta-stats --crate-type lib

pub fn a() {}

Meta

rustc --version --verbose:

rustc 1.74.0-nightly (8759de0a4 2023-09-22)
binary: rustc
commit-hash: 8759de0a4935e677fdce99a849addea2d5318da9
commit-date: 2023-09-22
host: x86_64-unknown-linux-gnu
release: 1.74.0-nightly
LLVM version: 17.0.0

Error output

<output>

Backtrace

thread 'rustc' panicked at compiler/rustc_metadata/src/rmeta/encoder.rs:738:22:
called `Result::unwrap()` on an `Err` value: Os { code: 9, kind: Uncategorized, message: "Bad file descriptor" }
stack backtrace:
   0:     0x7f5c533641bc - std::backtrace_rs::backtrace::libunwind::trace::h2c74ac6deac56f28
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f5c533641bc - std::backtrace_rs::backtrace::trace_unsynchronized::h88c61688a4e1192f
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f5c533641bc - std::sys_common::backtrace::_print_fmt::h2deb8eef8c5c089d
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x7f5c533641bc - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he46fa481b90009b7
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f5c533c9c2c - core::fmt::rt::Argument::fmt::hda3d7f3cd9199f3a
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/core/src/fmt/rt.rs:138:9
   5:     0x7f5c533c9c2c - core::fmt::write::h40f0f0afa8d83c16
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/core/src/fmt/mod.rs:1114:21
   6:     0x7f5c53356e4e - std::io::Write::write_fmt::h3fbee16ff35ee122
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/io/mod.rs:1714:15
   7:     0x7f5c53363fa4 - std::sys_common::backtrace::_print::h73fd854499da7291
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f5c53363fa4 - std::sys_common::backtrace::print::h9655cea3c483884a
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f5c53366e83 - std::panicking::default_hook::{{closure}}::h8c19e7e8a549fb73
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/panicking.rs:272:22
  10:     0x7f5c53366ba4 - std::panicking::default_hook::h55202e3f551762fb
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/panicking.rs:292:9
  11:     0x7f5c564f84af - std[6e2841eb239ea73c]::panicking::update_hook::<alloc[934157a7c91b5d71]::boxed::Box<rustc_driver_impl[4882aae0112549ca]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7f5c533676b1 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6e14d4d9ffc0c4e6
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/alloc/src/boxed.rs:2021:9
  13:     0x7f5c533676b1 - std::panicking::rust_panic_with_hook::hc15f28407fa2a306
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/panicking.rs:735:13
  14:     0x7f5c53367431 - std::panicking::begin_panic_handler::{{closure}}::h6d33f31db0875e55
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/panicking.rs:609:13
  15:     0x7f5c533646e6 - std::sys_common::backtrace::__rust_end_short_backtrace::hdc285b62ecc2ed04
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/sys_common/backtrace.rs:170:18
  16:     0x7f5c53367182 - rust_begin_unwind
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/panicking.rs:597:5
  17:     0x7f5c533c62b5 - core::panicking::panic_fmt::ha1ddd16588ec18da
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/core/src/panicking.rs:72:14
  18:     0x7f5c533c6943 - core::result::unwrap_failed::hda98b93833d5f813
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/core/src/result.rs:1652:5
  19:     0x7f5c558073d9 - <rustc_metadata[e17fe1675ffb8cf6]::rmeta::encoder::EncodeContext>::encode_crate_root
  20:     0x7f5c5577ab68 - rustc_metadata[e17fe1675ffb8cf6]::rmeta::encoder::encode_metadata_impl
  21:     0x7f5c55779843 - rustc_data_structures[6eeedaf2e616f613]::sync::parallel::disabled::join::<rustc_metadata[e17fe1675ffb8cf6]::rmeta::encoder::encode_metadata::{closure#0}, rustc_metadata[e17fe1675ffb8cf6]::rmeta::encoder::encode_metadata::{closure#1}, (), ()>
  22:     0x7f5c55779442 - rustc_metadata[e17fe1675ffb8cf6]::rmeta::encoder::encode_metadata
  23:     0x7f5c55778141 - rustc_metadata[e17fe1675ffb8cf6]::fs::encode_and_write_metadata
  24:     0x7f5c5576edc0 - rustc_interface[6a19061a6606b6ee]::passes::start_codegen
  25:     0x7f5c5576959a - <rustc_middle[5306ca3e19273ded]::ty::context::GlobalCtxt>::enter::<<rustc_interface[6a19061a6606b6ee]::queries::Queries>::ongoing_codegen::{closure#0}, core[203a612186f4578]::result::Result<alloc[934157a7c91b5d71]::boxed::Box<dyn core[203a612186f4578]::any::Any>, rustc_span[ca38ddb36620620f]::ErrorGuaranteed>>
  26:     0x7f5c5576849d - rustc_span[ca38ddb36620620f]::set_source_map::<core[203a612186f4578]::result::Result<(), rustc_span[ca38ddb36620620f]::ErrorGuaranteed>, rustc_interface[6a19061a6606b6ee]::interface::run_compiler<core[203a612186f4578]::result::Result<(), rustc_span[ca38ddb36620620f]::ErrorGuaranteed>, rustc_driver_impl[4882aae0112549ca]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  27:     0x7f5c55767120 - std[6e2841eb239ea73c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[6a19061a6606b6ee]::util::run_in_thread_with_globals<rustc_interface[6a19061a6606b6ee]::interface::run_compiler<core[203a612186f4578]::result::Result<(), rustc_span[ca38ddb36620620f]::ErrorGuaranteed>, rustc_driver_impl[4882aae0112549ca]::run_compiler::{closure#1}>::{closure#0}, core[203a612186f4578]::result::Result<(), rustc_span[ca38ddb36620620f]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[203a612186f4578]::result::Result<(), rustc_span[ca38ddb36620620f]::ErrorGuaranteed>>
  28:     0x7f5c55d5644e - <<std[6e2841eb239ea73c]::thread::Builder>::spawn_unchecked_<rustc_interface[6a19061a6606b6ee]::util::run_in_thread_with_globals<rustc_interface[6a19061a6606b6ee]::interface::run_compiler<core[203a612186f4578]::result::Result<(), rustc_span[ca38ddb36620620f]::ErrorGuaranteed>, rustc_driver_impl[4882aae0112549ca]::run_compiler::{closure#1}>::{closure#0}, core[203a612186f4578]::result::Result<(), rustc_span[ca38ddb36620620f]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[203a612186f4578]::result::Result<(), rustc_span[ca38ddb36620620f]::ErrorGuaranteed>>::{closure#1} as core[203a612186f4578]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  29:     0x7f5c53372025 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf0c9cb239a13ebdd
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/alloc/src/boxed.rs:2007:9
  30:     0x7f5c53372025 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h0f9f799ae3dbbb52
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/alloc/src/boxed.rs:2007:9
  31:     0x7f5c53372025 - std::sys::unix::thread::Thread::new::thread_start::h6b6066f3f20c40b7
                               at /rustc/8759de0a4935e677fdce99a849addea2d5318da9/library/std/src/sys/unix/thread.rs:108:17
  32:     0x7f5c5308c9eb - <unknown>
  33:     0x7f5c53110dfc - <unknown>
  34:                0x0 - <unknown>

error: 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: please attach the file at `/tmp/rustc-ice-2023-09-22T10:30:59.940536126Z-40564.txt` to your bug report

note: compiler flags: -Z meta-stats --crate-type lib

query stack during panic:
end of query stack

[saethlin]

Having not looked into this at all I'm pretty sure I broke this.
@rustbot claim