error: internal compiler error: the following error was constructed but not emitted error: expected identifier, found `]` --> /tmp/icemaker_global_tempdir.E5kp2dgcGyxl/rustc_testrunner_tmpdir_reporting.LJKdvhI9GKUw/mvce.rs:5:7 | 5 | #[] | ^ expected identifier thread 'rustc' panicked at compiler/rustc_errors/src/diagnostic_builder.rs:768:21: error was constructed but not emitted stack backtrace: 0: 0x7fb1bd9cb50c - std::backtrace_rs::backtrace::libunwind::trace::h479849121ff49a5d at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 1: 0x7fb1bd9cb50c - std::backtrace_rs::backtrace::trace_unsynchronized::hc9644f16de94df45 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 2: 0x7fb1bd9cb50c - std::sys_common::backtrace::_print_fmt::h10290334532192e1 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/sys_common/backtrace.rs:68:5 3: 0x7fb1bd9cb50c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1f3df53d81057b3e at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/sys_common/backtrace.rs:44:22 4: 0x7fb1bda1e540 - core::fmt::rt::Argument::fmt::hb8e319fcddae9a31 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/core/src/fmt/rt.rs:142:9 5: 0x7fb1bda1e540 - core::fmt::write::h80be9ea7045f640f at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/core/src/fmt/mod.rs:1120:17 6: 0x7fb1bd9bf36f - std::io::Write::write_fmt::h0522d22623a1843b at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/io/mod.rs:1810:15 7: 0x7fb1bd9cb2f4 - std::sys_common::backtrace::_print::h11954509d6d4a59e at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/sys_common/backtrace.rs:47:5 8: 0x7fb1bd9cb2f4 - std::sys_common::backtrace::print::h89028ceab4fa2c56 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/sys_common/backtrace.rs:34:9 9: 0x7fb1bd9cdf87 - std::panicking::default_hook::{{closure}}::ha828cf6bd2b63731 10: 0x7fb1bd9cdcef - std::panicking::default_hook::h85bef85bc0f3798a at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/panicking.rs:292:9 11: 0x7fb1ba6f9490 - std[be0bda08bb484463]::panicking::update_hook::<alloc[5e2c4fa57d45c172]::boxed::Box<rustc_driver_impl[7a73365881d43582]::install_ice_hook::{closure#0}>>::{closure#0} 12: 0x7fb1bd9ce6c8 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::he0dee972ea8e9cc9 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/alloc/src/boxed.rs:2021:9 13: 0x7fb1bd9ce6c8 - std::panicking::rust_panic_with_hook::he9727088864fdef9 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/panicking.rs:783:13 14: 0x7fb1bd9ce3e9 - std::panicking::begin_panic_handler::{{closure}}::h80b7e677079c8e55 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/panicking.rs:649:13 15: 0x7fb1bd9cb9d6 - std::sys_common::backtrace::__rust_end_short_backtrace::hd9049e8056407812 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/sys_common/backtrace.rs:171:18 16: 0x7fb1bd9ce182 - rust_begin_unwind at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/panicking.rs:645:5 17: 0x7fb1bda1ac15 - core::panicking::panic_fmt::h97f53bcafbf77918 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/core/src/panicking.rs:72:14 18: 0x7fb1bc0129e9 - <rustc_errors[d85cd907ae34f40d]::diagnostic_builder::DiagnosticBuilderInner as core[9199d425737c1d72]::ops::drop::Drop>::drop 19: 0x7fb1bc012a16 - core[9199d425737c1d72]::ptr::drop_in_place::<rustc_errors[d85cd907ae34f40d]::diagnostic_builder::DiagnosticBuilderInner> 20: 0x7fb1b9424157 - <rustc_parse[e3a3cb118eb68122]::parser::Parser>::attr_on_non_tail_expr 21: 0x7fb1bc0c6cb0 - <rustc_parse[e3a3cb118eb68122]::parser::Parser>::parse_block_tail 22: 0x7fb1bbde159f - <rustc_parse[e3a3cb118eb68122]::parser::Parser>::parse_fn 23: 0x7fb1bc0b4c2f - <rustc_parse[e3a3cb118eb68122]::parser::Parser>::parse_item_kind 24: 0x7fb1bbdf993f - <rustc_parse[e3a3cb118eb68122]::parser::Parser>::parse_item_common 25: 0x7fb1bbdf6fec - <rustc_parse[e3a3cb118eb68122]::parser::Parser>::parse_mod 26: 0x7fb1bc972350 - rustc_interface[2959b8b48a60afbe]::passes::parse 27: 0x7fb1bc9720ce - <rustc_interface[2959b8b48a60afbe]::queries::Queries>::parse 28: 0x7fb1bc968de5 - rustc_interface[2959b8b48a60afbe]::interface::run_compiler::<core[9199d425737c1d72]::result::Result<(), rustc_span[baba122c7922aac3]::ErrorGuaranteed>, rustc_driver_impl[7a73365881d43582]::run_compiler::{closure#0}>::{closure#0} 29: 0x7fb1bc95c411 - std[be0bda08bb484463]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[2959b8b48a60afbe]::util::run_in_thread_with_globals<rustc_interface[2959b8b48a60afbe]::util::run_in_thread_pool_with_globals<rustc_interface[2959b8b48a60afbe]::interface::run_compiler<core[9199d425737c1d72]::result::Result<(), rustc_span[baba122c7922aac3]::ErrorGuaranteed>, rustc_driver_impl[7a73365881d43582]::run_compiler::{closure#0}>::{closure#0}, core[9199d425737c1d72]::result::Result<(), rustc_span[baba122c7922aac3]::ErrorGuaranteed>>::{closure#0}, core[9199d425737c1d72]::result::Result<(), rustc_span[baba122c7922aac3]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[9199d425737c1d72]::result::Result<(), rustc_span[baba122c7922aac3]::ErrorGuaranteed>> 30: 0x7fb1bc95c23b - <<std[be0bda08bb484463]::thread::Builder>::spawn_unchecked_<rustc_interface[2959b8b48a60afbe]::util::run_in_thread_with_globals<rustc_interface[2959b8b48a60afbe]::util::run_in_thread_pool_with_globals<rustc_interface[2959b8b48a60afbe]::interface::run_compiler<core[9199d425737c1d72]::result::Result<(), rustc_span[baba122c7922aac3]::ErrorGuaranteed>, rustc_driver_impl[7a73365881d43582]::run_compiler::{closure#0}>::{closure#0}, core[9199d425737c1d72]::result::Result<(), rustc_span[baba122c7922aac3]::ErrorGuaranteed>>::{closure#0}, core[9199d425737c1d72]::result::Result<(), rustc_span[baba122c7922aac3]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[9199d425737c1d72]::result::Result<(), rustc_span[baba122c7922aac3]::ErrorGuaranteed>>::{closure#1} as core[9199d425737c1d72]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} 31: 0x7fb1bd9d8555 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h97e5c9d6b1622657 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/alloc/src/boxed.rs:2007:9 32: 0x7fb1bd9d8555 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb5f6014336ba501b at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/alloc/src/boxed.rs:2007:9 33: 0x7fb1bd9d8555 - std::sys::unix::thread::Thread::new::thread_start::h758e18463c2780d9 at /rustc/d5fab33766917085588d9bb4fb9477776695d98b/library/std/src/sys/unix/thread.rs:108:17 34: 0x7fb1b78aa9eb - <unknown> 35: 0x7fb1b792e7cc - <unknown> 36: 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: rustc 1.76.0-nightly (d5fab3376 2023-12-02) running on x86_64-unknown-linux-gnu query stack during panic: end of query stack error: aborting due to 2 previous errors