Index out of bounds on x86_64-apple-darwin nightly with time 0.3.11.

[XAMPPRocky]

The following ICE appeared in rasn’s CI in main. Worth noting that this originally passed in the PR, so the bug was probably introduced after rustc 1.64.0-nightly (1517f5de0 2022-07-07), and is not present in stable or beta.

Meta

rustc --version --verbose:

1.64.0-nightly (c2f428d2f 2022-07-14)

Error output

2022-07-15T19:14:06.1021330Z    Compiling time v0.3.11
2022-07-15T19:14:06.4728690Z thread 'rustc' panicked at 'index out of bounds: the len is 1 but the index is 2', compiler/rustc_builtin_macros/src/format.rs:1001:28
2022-07-15T19:14:06.4742260Z stack backtrace:
2022-07-15T19:14:06.4860140Z    0:        0x100d74d44 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3bae93de7e909f98
2022-07-15T19:14:06.4943760Z    1:        0x100dcc6eb - core::fmt::write::h015f2abcd0dede7a
2022-07-15T19:14:06.4966590Z    2:        0x100d6742c - std::io::Write::write_fmt::h5e6d8959eec55de1
2022-07-15T19:14:06.5075450Z    3:        0x100d77e17 - std::panicking::default_hook::{{closure}}::hc5dcf5136d15fddd
2022-07-15T19:14:06.5209220Z    4:        0x100d77b20 - std::panicking::default_hook::h1f1fc9fdfa1a3230
2022-07-15T19:14:06.5279590Z    5:        0x105409c8a - rustc_driver[f0976747e5506787]::DEFAULT_HOOK::{closure#0}::{closure#0}
2022-07-15T19:14:06.5281360Z    6:        0x100d7854d - std::panicking::rust_panic_with_hook::hda5f1265d6864b2c
2022-07-15T19:14:06.5282670Z    7:        0x100d783f3 - std::panicking::begin_panic_handler::{{closure}}::h90ea6d5574f51a59
2022-07-15T19:14:06.5283950Z    8:        0x100d751f7 - std::sys_common::backtrace::__rust_end_short_backtrace::h830f0220810754ef
2022-07-15T19:14:06.5285990Z    9:        0x100d780cd - _rust_begin_unwind
2022-07-15T19:14:06.5287210Z   10:        0x100df7a43 - core::panicking::panic_fmt::h336e96b5824e16ac
2022-07-15T19:14:06.5288820Z   11:        0x100df7996 - core::panicking::panic_bounds_check::hced588eee9413f98
2022-07-15T19:14:06.5346590Z   12:        0x107e99c92 - rustc_builtin_macros[a24cf6c6e70cdd8a]::format::expand_preparsed_format_args
2022-07-15T19:14:06.5348410Z   13:        0x107e9240b - rustc_builtin_macros[a24cf6c6e70cdd8a]::format::expand_format_args_impl
2022-07-15T19:14:06.5349670Z   14:        0x1093a3854 - <rustc_expand[613880ea7a1f4723]::expand::MacroExpander>::fully_expand_fragment
2022-07-15T19:14:06.5351170Z   15:        0x1093a2b6f - <rustc_expand[613880ea7a1f4723]::expand::MacroExpander>::expand_crate
2022-07-15T19:14:06.5353970Z   16:        0x1054d5ba6 - <rustc_session[d099487e84ea56d0]::session::Session>::time::<core[cf3dbd3869dbba44]::result::Result<rustc_ast[e095b679a2a1e48a]::ast::Crate, rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>, rustc_interface[c2f526d835f70adb]::passes::configure_and_expand::{closure#1}>
2022-07-15T19:14:06.5356250Z   17:        0x1054a0418 - rustc_interface[c2f526d835f70adb]::passes::configure_and_expand
2022-07-15T19:14:06.5358030Z   18:        0x1054c48e3 - <rustc_interface[c2f526d835f70adb]::queries::Queries>::expansion
2022-07-15T19:14:06.5359950Z   19:        0x105383397 - <rustc_interface[c2f526d835f70adb]::interface::Compiler>::enter::<rustc_driver[f0976747e5506787]::run_compiler::{closure#1}::{closure#2}, core[cf3dbd3869dbba44]::result::Result<core[cf3dbd3869dbba44]::option::Option<rustc_interface[c2f526d835f70adb]::queries::Linker>, rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>>
2022-07-15T19:14:06.5361500Z   20:        0x1053794b8 - rustc_span[36896e0cb6bb9b17]::with_source_map::<core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>, rustc_interface[c2f526d835f70adb]::interface::create_compiler_and_run<core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>, rustc_driver[f0976747e5506787]::run_compiler::{closure#1}>::{closure#1}>
2022-07-15T19:14:06.5363300Z   21:        0x105384fe6 - rustc_interface[c2f526d835f70adb]::interface::create_compiler_and_run::<core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>, rustc_driver[f0976747e5506787]::run_compiler::{closure#1}>
2022-07-15T19:14:06.5375000Z   22:        0x1053762e5 - <scoped_tls[98e5b78f537dbb63]::ScopedKey<rustc_span[36896e0cb6bb9b17]::SessionGlobals>>::set::<rustc_interface[c2f526d835f70adb]::interface::run_compiler<core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>, rustc_driver[f0976747e5506787]::run_compiler::{closure#1}>::{closure#0}, core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>>
2022-07-15T19:14:06.5378260Z   23:        0x105380129 - std[ecc071ea8f6d755]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[c2f526d835f70adb]::util::run_in_thread_pool_with_globals<rustc_interface[c2f526d835f70adb]::interface::run_compiler<core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>, rustc_driver[f0976747e5506787]::run_compiler::{closure#1}>::{closure#0}, core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>>::{closure#0}, core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>>
2022-07-15T19:14:06.5381020Z   24:        0x1053ba131 - <<std[ecc071ea8f6d755]::thread::Builder>::spawn_unchecked_<rustc_interface[c2f526d835f70adb]::util::run_in_thread_pool_with_globals<rustc_interface[c2f526d835f70adb]::interface::run_compiler<core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>, rustc_driver[f0976747e5506787]::run_compiler::{closure#1}>::{closure#0}, core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>>::{closure#0}, core[cf3dbd3869dbba44]::result::Result<(), rustc_errors[40b0eadd63e7af36]::ErrorGuaranteed>>::{closure#1} as core[cf3dbd3869dbba44]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
2022-07-15T19:14:06.5382270Z   25:        0x100d81227 - std::sys::unix::thread::Thread::new::thread_start::h4c28c1eab237bd6e
2022-07-15T19:14:06.5586710Z   26:     0x7fff206718fc - __pthread_start
2022-07-15T19:14:06.5626600Z 
2022-07-15T19:14:06.5627610Z error: internal compiler error: unexpected panic
2022-07-15T19:14:06.5628170Z 
2022-07-15T19:14:06.5628680Z note: the compiler unexpectedly panicked. this is a bug.
2022-07-15T19:14:06.5629210Z 
2022-07-15T19:14:06.5630190Z 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
2022-07-15T19:14:06.5630840Z 
2022-07-15T19:14:06.5631790Z note: rustc 1.64.0-nightly (c2f428d2f 2022-07-14) running on x86_64-apple-darwin
2022-07-15T19:14:06.5632500Z 
2022-07-15T19:14:06.5633170Z note: compiler flags: --crate-type lib -C embed-bitcode=no -C split-debuginfo=unpacked -C debuginfo=2
2022-07-15T19:14:06.5634380Z 
2022-07-15T19:14:06.5634880Z note: some of the compiler flags provided by cargo are hidden
2022-07-15T19:14:06.5635400Z 
2022-07-15T19:14:06.5635820Z query stack during panic:
2022-07-15T19:14:06.5636430Z end of query stack
2022-07-15T19:14:06.5747510Z error: could not compile `time`

[matthiaskrgr]

This is #99261 I think the latest nightly should already provide a fix?

[ehuss]

Thanks for the report! Closing as a duplicate of #99261. This should be fixed by #99263 and should be fixed in the latest nightly.