ICE when compiling time::macros::format_description

[rossmacarthur]

Summary

I haven't delved deeper as to what about this macro triggers the ICE but I am consistently able to replicate using the following.

Using the time crate version 0.3.11.

time::macros::format_description!("[day] [month repr:long] [year]");

Error

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

Version

rustc 1.64.0-nightly (23e21bdd2 2022-07-15)
binary: rustc
commit-hash: 23e21bdd25026e2839ebe946c2a937c1904887d2
commit-date: 2022-07-15
host: aarch64-apple-darwin
release: 1.64.0-nightly
LLVM version: 14.0.6

Error output

Backtrace

  Checking time v0.3.11
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
stack backtrace:
 0: _rust_begin_unwind
 1: core::panicking::panic_fmt
 2: core::panicking::panic_bounds_check
 3: rustc_builtin_macros::format::expand_preparsed_format_args
 4: rustc_builtin_macros::format::expand_format_args_impl
 5: <rustc_expand::expand::MacroExpander>::fully_expand_fragment
 6: <rustc_expand::expand::MacroExpander>::expand_crate
 7: <rustc_session::session::Session>::time::<core::result::Result<rustc_ast::ast::Crate, rustc_errors::ErrorGuaranteed>, rustc_interface::passes::configure_and_expand::{closure#1}>
 8: <rustc_interface::passes::boxed_resolver::BoxedResolver>::access::<<rustc_interface::queries::Queries>::expansion::{closure#0}::{closure#0}, core::result::Result<rustc_ast::ast::Crate, rustc_errors::ErrorGuaranteed>>
 9: <rustc_interface::queries::Queries>::expansion
10: <rustc_interface::interface::Compiler>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}, core::result::Result<core::option::Option<rustc_interface::queries::Linker>, rustc_errors::ErrorGuaranteed>>
11: rustc_span::with_source_map::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_interface::interface::create_compiler_and_run<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#1}>
12: rustc_interface::interface::create_compiler_and_run::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>
13: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose 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 1.64.0-nightly (23e21bdd2 2022-07-15) running on aarch64-apple-darwin

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

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

query stack during panic:
end of query stack
error: could not compile `time`

[rossmacarthur]

Nvm just realized this isn't just clippy will move to the Rust repository

[rossmacarthur]

See rust-lang/rust#99261