rustfmt: self.stashed_diagnostics.is_empty() #121517

thread 'main' panicked at compiler/rustc_errors/src/lib.rs:565:9:
assertion failed: self.stashed_diagnostics.is_empty()
stack backtrace:
   0:     0x7f117c672af6 - std::backtrace_rs::backtrace::libunwind::trace::he0282bd7aa79d0f5
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
   1:     0x7f117c672af6 - std::backtrace_rs::backtrace::trace_unsynchronized::hd257d30ae267ec37
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f117c672af6 - std::sys_common::backtrace::_print_fmt::h4d76d87d5818822c
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7f117c672af6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hda8b13640513c0ca
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f117c6c3a7c - core::fmt::rt::Argument::fmt::h0e78e7472c6726f6
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/core/src/fmt/rt.rs:142:9
   5:     0x7f117c6c3a7c - core::fmt::write::h92726084111378c3
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/core/src/fmt/mod.rs:1120:17
   6:     0x7f117c6674bf - std::io::Write::write_fmt::hae4e2cfe04fc8ffe
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/io/mod.rs:1846:15
   7:     0x7f117c6728a4 - std::sys_common::backtrace::_print::ha088f411ecf7b854
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f117c6728a4 - std::sys_common::backtrace::print::h3cf71d8220ad62fb
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f117c6755eb - std::panicking::default_hook::{{closure}}::h40fbaa4ba62f2a25
  10:     0x7f117c675339 - std::panicking::default_hook::h4bae8cc7cdeafbdc
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panicking.rs:292:9
  11:     0x7f11792859dc - std[67003dfa8d3cf222]::panicking::update_hook::<alloc[39168ee3c7236603]::boxed::Box<rustc_driver_impl[7f540b76ed15adf]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7f117c675d50 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h9766e5d4d8db67de
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/alloc/src/boxed.rs:2030:9
  13:     0x7f117c675d50 - std::panicking::rust_panic_with_hook::h8e53bf6707538e9c
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panicking.rs:786:13
  14:     0x7f117c675a59 - std::panicking::begin_panic_handler::{{closure}}::h26d54e6ef9a6c6b8
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panicking.rs:652:13
  15:     0x7f117c672fd6 - std::sys_common::backtrace::__rust_end_short_backtrace::h820826df8359172f
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x7f117c6757c4 - rust_begin_unwind
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panicking.rs:648:5
  17:     0x7f117c6bff95 - core::panicking::panic_fmt::h8ddceedf455eb6ab
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/core/src/panicking.rs:72:14
  18:     0x7f117c6c0053 - core::panicking::panic::h2937174c0915040f
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/core/src/panicking.rs:144:5
  19:     0x7f117bbddbdb - <rustc_errors[69afeb585d680721]::DiagCtxtInner as core[e4f656a50871fc5f]::ops::drop::Drop>::drop.cold.0
  20:     0x564134bcb50b - core[e4f656a50871fc5f]::ptr::drop_in_place::<rustfmt_nightly[734c678f573b2d80]::parse::session::ParseSess>
  21:     0x564134bd2cc0 - <rustfmt_nightly[734c678f573b2d80]::Session<std[67003dfa8d3cf222]::io::stdio::Stdout>>::format_input_inner::{closure#0}
  22:     0x564134be8dd1 - rustfmt[40fef13c054501be]::format_and_emit_report::<std[67003dfa8d3cf222]::io::stdio::Stdout>
  23:     0x564134be726c - rustfmt[40fef13c054501be]::execute
  24:     0x564134be293b - rustfmt[40fef13c054501be]::main
  25:     0x564134bcd023 - std[67003dfa8d3cf222]::sys_common::backtrace::__rust_begin_short_backtrace::<fn(), ()>
  26:     0x564134bcf2c9 - std[67003dfa8d3cf222]::rt::lang_start::<()>::{closure#0}
  27:     0x7f117c657f83 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h369d12c4942e7526
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/core/src/ops/function.rs:284:13
  28:     0x7f117c657f83 - std::panicking::try::do_call::h951a588450e41da0
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panicking.rs:555:40
  29:     0x7f117c657f83 - std::panicking::try::h45c068d6d7241dfb
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panicking.rs:519:19
  30:     0x7f117c657f83 - std::panic::catch_unwind::h7e2d0c5ea10dda27
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panic.rs:142:14
  31:     0x7f117c657f83 - std::rt::lang_start_internal::{{closure}}::hba10876b1ebd8163
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/rt.rs:148:48
  32:     0x7f117c657f83 - std::panicking::try::do_call::h4de9141859218b0f
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panicking.rs:555:40
  33:     0x7f117c657f83 - std::panicking::try::h2528c2b62a63cf2f
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panicking.rs:519:19
  34:     0x7f117c657f83 - std::panic::catch_unwind::h7b8241c110740d48
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/panic.rs:142:14
  35:     0x7f117c657f83 - std::rt::lang_start_internal::h65f44bcaf429c087
                               at /rustc/52cea084bd5bbac12ecfa5c0499f5c777025c968/library/std/src/rt.rs:148:20
  36:     0x564134be9f95 - main
  37:     0x7f1176158cd0 - <unknown>
  38:     0x7f1176158d8a - __libc_start_main
  39:     0x564134bbc699 - <unknown>
  40:                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 `/tmp/im/rustc-ice-2024-02-23T17_30_19-757026.txt` to your bug report

query stack during panic:
end of query stack