Manual rustfmt invocations panic

[aaronmondal]

Running this command:

bazel run \
  --@rules_rust//:rustfmt.toml=//:.rustfmt.toml \
  @rules_rust//:rustfmt --verbose_failures

Fails with this error:

INFO: Analyzed target @rules_rust//:rustfmt (0 packages loaded, 0 targets configured).
INFO: Found 1 target...
INFO: Elapsed time: 0.414s, Critical Path: 0.28s
INFO: 3 processes: 1 internal, 2 linux-sandbox.
INFO: Build completed successfully, 3 total actions
INFO: Running command line: bazel-bin/external/rules_rust/tools/rustfmt/rustfmt
Loading: 0 packages loaded
INFO: Empty results
Loading: 1 packages loaded
Loading: 0 packages loaded
INFO: Empty results
Loading: 0 packages loaded
Loading: 0 packages loaded
INFO: Empty results
Loading: 0 packages loaded
Loading: 0 packages loaded
Loading: 0 packages loaded
thread 'main' panicked at /rust/deps/ignore-0.4.20/src/gitignore.rs:227:9:
path is expected to be under the root
stack backtrace:
   0:     0x7ff99859c756 - std::backtrace_rs::backtrace::libunwind::trace::h0c778a97139c185f
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
   1:     0x7ff99859c756 - std::backtrace_rs::backtrace::trace_unsynchronized::h49275f7f11d03db8
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7ff99859c756 - std::sys_common::backtrace::_print_fmt::hc6d2af0f9113f87c
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7ff99859c756 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h4269025391cee804
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7ff9985ef080 - core::fmt::rt::Argument::fmt::h47e13179bda442d0
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/core/src/fmt/rt.rs:142:9
   5:     0x7ff9985ef080 - core::fmt::write::h0ea06241e192b662
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/core/src/fmt/mod.rs:1120:17
   6:     0x7ff99859040f - std::io::Write::write_fmt::hada0a89348d2eeaf
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/io/mod.rs:1810:15
   7:     0x7ff99859c534 - std::sys_common::backtrace::_print::h474b180b0f0cbfaa
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7ff99859c534 - std::sys_common::backtrace::print::h292cdb95c9f3ed37
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7ff99859f2c7 - std::panicking::default_hook::{{closure}}::h215c742b61103c6e
  10:     0x7ff99859f029 - std::panicking::default_hook::h57e29db39f9afc40
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/panicking.rs:292:9
  11:     0x7ff99535895c - std[8ca417bb7e88f110]::panicking::update_hook::<alloc[e6bcedfe09e584e0]::boxed::Box<rustc_driver_impl[f66e2583066ca4e1]::install_ice_hook::{closure
#0}>>::{closure#0}
  12:     0x7ff99859fa16 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha301741326637587
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/alloc/src/boxed.rs:2029:9
  13:     0x7ff99859fa16 - std::panicking::rust_panic_with_hook::hdec91a2b4b229c0a
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/panicking.rs:783:13
  14:     0x562e05c693ad - std[8ca417bb7e88f110]::panicking::begin_panic::<&str>::{closure#0}
  15:     0x562e05c3eb76 - std[8ca417bb7e88f110]::sys_common::backtrace::__rust_end_short_backtrace::<std[8ca417bb7e88f110]::panicking::begin_panic<&str>::{closure#0}, !>
  16:     0x562e05c3ce1a - std[8ca417bb7e88f110]::panicking::begin_panic::<&str>
  17:     0x562e05cd2a1d - <rustfmt_nightly[ce0b5b603490c2a8]::ignore_path::IgnorePathSet>::is_match
  18:     0x562e05bb4e88 - <rustfmt_nightly[ce0b5b603490c2a8]::Session<std[8ca417bb7e88f110]::io::stdio::Stdout>>::format_input_inner::{closure#0}
  19:     0x562e05bcb9f0 - rustfmt[e9ef42d9389088c1]::format_and_emit_report::<std[8ca417bb7e88f110]::io::stdio::Stdout>
  20:     0x562e05bc9c4a - rustfmt[e9ef42d9389088c1]::execute
  21:     0x562e05bc52a4 - rustfmt[e9ef42d9389088c1]::main
  22:     0x562e05baf443 - std[8ca417bb7e88f110]::sys_common::backtrace::__rust_begin_short_backtrace::<fn(), ()>
  23:     0x562e05bb1639 - std[8ca417bb7e88f110]::rt::lang_start::<()>::{closure#0}
  24:     0x7ff998580c11 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hf714efa6d38815ab
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/core/src/ops/function.rs:284:13
  25:     0x7ff998580c11 - std::panicking::try::do_call::h8d7fa009cdec4f0a
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/panicking.rs:552:40
  26:     0x7ff998580c11 - std::panicking::try::h8d0a635504a1d66a
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/panicking.rs:516:19
  27:     0x7ff998580c11 - std::panic::catch_unwind::h4dcb3e51b0164860
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/panic.rs:142:14
  28:     0x7ff998580c11 - std::rt::lang_start_internal::{{closure}}::h919a24d244c97b27
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/rt.rs:148:48
  29:     0x7ff998580c11 - std::panicking::try::do_call::hcff546c073fe5640
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/panicking.rs:552:40
  30:     0x7ff998580c11 - std::panicking::try::h16b0c3c9d52ac526
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/panicking.rs:516:19
  31:     0x7ff998580c11 - std::panic::catch_unwind::haae4436877e1de50
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/panic.rs:142:14
  32:     0x7ff998580c11 - std::rt::lang_start_internal::hd65f8c7805da0ae2
                               at /rustc/89e2160c4ca5808657ed55392620ed1dbbce78d1/library/std/src/rt.rs:148:20
  33:     0x562e05bccc05 - main
  34:     0x7ff992347c8a - <unknown>
  35:     0x7ff992347d45 - __libc_start_main
  36:     0x562e05b9ed89 - <unknown>
  37:                0x0 - <unknown>

error: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rustfmt/issues/new?labels=bug

note: please attach the file at `/home/aaron/aaronmondal/nativelink/rustc-ice-2024-01-18T12_48_31-493298.txt` to your bug report

query stack during panic:
end of query stack