Result::unwrap() on an Err value: ReferencesError(ErrorGuaranteed(())) #128094
Description
auto-reduced (treereduce-rust):
pub enum Request { TestSome(T), } pub async fn handle_event(event: Request) { async move { static instance: Request = Request { bar: 17 }; &instance } .await; } original:
pub enum Request { TestSome(T), } pub async fn handle_event( event: Request, ) { async move { static instance: Request = Request { bar: 17 }; &instance }.await; } pub fn main() {}Version information
rustc 1.82.0-nightly (49649bf3c 2024-07-23) binary: rustc commit-hash: 49649bf3c5538531ade6834b9b308a6c8a5f3e8e commit-date: 2024-07-23 host: x86_64-unknown-linux-gnu release: 1.82.0-nightly LLVM version: 18.1.7 Command:
/home/matthias/.rustup/toolchains/master/bin/rustc -Zmir-opt-level=5 --edition=2018
Program output
error[E0412]: cannot find type `T` in this scope --> /tmp/icemaker_global_tempdir.7wIEjd0lKecw/rustc_testrunner_tmpdir_reporting.168IfbM3nYxW/mvce.rs:2:14 | 2 | TestSome(T), | ^ not found in this scope | help: you might be missing a type parameter | 1 | pub enum Request<T> { | +++ error[E0574]: expected struct, variant or union type, found enum `Request` --> /tmp/icemaker_global_tempdir.7wIEjd0lKecw/rustc_testrunner_tmpdir_reporting.168IfbM3nYxW/mvce.rs:7:36 | 7 | static instance: Request = Request { bar: 17 }; | ^^^^^^^ not a struct, variant or union type | help: consider importing this struct instead | 1 + use std::error::Request; | error[E0601]: `main` function not found in crate `mvce` --> /tmp/icemaker_global_tempdir.7wIEjd0lKecw/rustc_testrunner_tmpdir_reporting.168IfbM3nYxW/mvce.rs:11:2 | 11 | } | ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.7wIEjd0lKecw/rustc_testrunner_tmpdir_reporting.168IfbM3nYxW/mvce.rs` warning: unused variable: `event` --> /tmp/icemaker_global_tempdir.7wIEjd0lKecw/rustc_testrunner_tmpdir_reporting.168IfbM3nYxW/mvce.rs:5:27 | 5 | pub async fn handle_event(event: Request) { | ^^^^^ help: if this is intentional, prefix it with an underscore: `_event` | = note: `#[warn(unused_variables)]` on by default thread 'rustc' panicked at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/compiler/rustc_const_eval/src/interpret/memory.rs:819:80: called `Result::unwrap()` on an `Err` value: ReferencesError(ErrorGuaranteed(())) stack backtrace: 0: 0x7aca857e8215 - std::backtrace_rs::backtrace::libunwind::trace::h2d3a238147fe4644 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 1: 0x7aca857e8215 - std::backtrace_rs::backtrace::trace_unsynchronized::h62ccd1746707818d at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 2: 0x7aca857e8215 - std::sys::backtrace::_print_fmt::h198764e2cd3756f6 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/sys/backtrace.rs:65:5 3: 0x7aca857e8215 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8efb4db36089f8d1 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/sys/backtrace.rs:40:26 4: 0x7aca85837c8b - core::fmt::rt::Argument::fmt::h32cf5a418db2846f at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/core/src/fmt/rt.rs:173:76 5: 0x7aca85837c8b - core::fmt::write::hd634bfe95aa2d191 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/core/src/fmt/mod.rs:1182:21 6: 0x7aca857dccef - std::io::Write::write_fmt::h18d00a47d2edb63e at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/io/mod.rs:1827:15 7: 0x7aca857eaa01 - std::sys::backtrace::BacktraceLock::print::hdf53fb28966ef7ad at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/sys/backtrace.rs:43:9 8: 0x7aca857eaa01 - std::panicking::default_hook::{{closure}}::h6dc27f9ba326a601 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/panicking.rs:269:22 9: 0x7aca857ea6dc - std::panicking::default_hook::h9dbf01c0a905b2fb at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/panicking.rs:296:9 10: 0x7aca81c1e709 - std[84685e2f5e49534c]::panicking::update_hook::<alloc[69d17d5c7a222efa]::boxed::Box<rustc_driver_impl[2ca809430a6bb1db]::install_ice_hook::{closure#0}>>::{closure#0} 11: 0x7aca857eb3cf - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2926931e5fae8e54 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/alloc/src/boxed.rs:2163:9 12: 0x7aca857eb3cf - std::panicking::rust_panic_with_hook::ha943b79683377534 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/panicking.rs:808:13 13: 0x7aca857eaff7 - std::panicking::begin_panic_handler::{{closure}}::hb948fc2cd41a6d5c at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/panicking.rs:674:13 14: 0x7aca857e86d9 - std::sys::backtrace::__rust_end_short_backtrace::h82feed5209c926ba at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/sys/backtrace.rs:168:18 15: 0x7aca857eac84 - rust_begin_unwind at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/panicking.rs:665:5 16: 0x7aca85834243 - core::panicking::panic_fmt::ha0806b6370825159 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/core/src/panicking.rs:74:14 17: 0x7aca85834896 - core::result::unwrap_failed::h4fc72d8e11c69246 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/core/src/result.rs:1679:5 18: 0x7aca84a6478f - <rustc_const_eval[bdbbaff3c31c13f6]::interpret::eval_context::InterpCx<rustc_const_eval[bdbbaff3c31c13f6]::const_eval::dummy_machine::DummyMachine>>::get_alloc_info.cold 19: 0x7aca83cf0dfa - <rustc_const_eval[bdbbaff3c31c13f6]::interpret::eval_context::InterpCx<rustc_const_eval[bdbbaff3c31c13f6]::const_eval::dummy_machine::DummyMachine>>::scalar_may_be_null 20: 0x7aca83cf08a4 - <rustc_const_eval[bdbbaff3c31c13f6]::interpret::eval_context::InterpCx<rustc_const_eval[bdbbaff3c31c13f6]::const_eval::dummy_machine::DummyMachine>>::read_discriminant::<rustc_const_eval[bdbbaff3c31c13f6]::interpret::operand::OpTy> 21: 0x7aca83ce8cee - <rustc_mir_transform[48c5b07b6fa30cb7]::gvn::VnState>::insert 22: 0x7aca83ce2524 - <rustc_mir_transform[48c5b07b6fa30cb7]::gvn::VnState>::simplify_rvalue 23: 0x7aca80d2d468 - <rustc_mir_transform[48c5b07b6fa30cb7]::gvn::GVN as rustc_middle[f06a2f49cb923fa3]::mir::MirPass>::run_pass 24: 0x7aca83201c7b - rustc_mir_transform[48c5b07b6fa30cb7]::pass_manager::run_passes_inner 25: 0x7aca837d9256 - rustc_mir_transform[48c5b07b6fa30cb7]::optimized_mir 26: 0x7aca8409185d - rustc_query_impl[3f261a864a124585]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[3f261a864a124585]::query_impl::optimized_mir::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 8usize]>> 27: 0x7aca8348a857 - rustc_query_system[85f7d4985ebc0774]::query::plumbing::try_execute_query::<rustc_query_impl[3f261a864a124585]::DynamicConfig<rustc_query_system[85f7d4985ebc0774]::query::caches::DefIdCache<rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[3f261a864a124585]::plumbing::QueryCtxt, false> 28: 0x7aca8348a034 - rustc_query_impl[3f261a864a124585]::query_impl::optimized_mir::get_query_non_incr::__rust_end_short_backtrace 29: 0x7aca833b2457 - rustc_middle[f06a2f49cb923fa3]::query::plumbing::query_get_at::<rustc_query_system[85f7d4985ebc0774]::query::caches::DefIdCache<rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 8usize]>>> 30: 0x7aca82209fc0 - <rustc_middle[f06a2f49cb923fa3]::ty::context::TyCtxt>::coroutine_layout 31: 0x7aca838254e2 - rustc_ty_utils[4b3be0d27c5e9905]::layout::layout_of_uncached 32: 0x7aca8381444b - rustc_ty_utils[4b3be0d27c5e9905]::layout::layout_of 33: 0x7aca838143d1 - rustc_query_impl[3f261a864a124585]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[3f261a864a124585]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 16usize]>> 34: 0x7aca838136d0 - rustc_query_system[85f7d4985ebc0774]::query::plumbing::try_execute_query::<rustc_query_impl[3f261a864a124585]::DynamicConfig<rustc_query_system[85f7d4985ebc0774]::query::caches::DefaultCache<rustc_middle[f06a2f49cb923fa3]::ty::ParamEnvAnd<rustc_middle[f06a2f49cb923fa3]::ty::Ty>, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[3f261a864a124585]::plumbing::QueryCtxt, false> 35: 0x7aca8381336f - rustc_query_impl[3f261a864a124585]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace 36: 0x7aca83ce6a56 - rustc_middle[f06a2f49cb923fa3]::query::plumbing::query_get_at::<rustc_query_system[85f7d4985ebc0774]::query::caches::DefaultCache<rustc_middle[f06a2f49cb923fa3]::ty::ParamEnvAnd<rustc_middle[f06a2f49cb923fa3]::ty::Ty>, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 16usize]>>> 37: 0x7aca83ce824e - <rustc_mir_transform[48c5b07b6fa30cb7]::gvn::VnState>::insert 38: 0x7aca83ce2524 - <rustc_mir_transform[48c5b07b6fa30cb7]::gvn::VnState>::simplify_rvalue 39: 0x7aca80d2d468 - <rustc_mir_transform[48c5b07b6fa30cb7]::gvn::GVN as rustc_middle[f06a2f49cb923fa3]::mir::MirPass>::run_pass 40: 0x7aca83201c7b - rustc_mir_transform[48c5b07b6fa30cb7]::pass_manager::run_passes_inner 41: 0x7aca837d9256 - rustc_mir_transform[48c5b07b6fa30cb7]::optimized_mir 42: 0x7aca8409185d - rustc_query_impl[3f261a864a124585]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[3f261a864a124585]::query_impl::optimized_mir::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 8usize]>> 43: 0x7aca8348a857 - rustc_query_system[85f7d4985ebc0774]::query::plumbing::try_execute_query::<rustc_query_impl[3f261a864a124585]::DynamicConfig<rustc_query_system[85f7d4985ebc0774]::query::caches::DefIdCache<rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[3f261a864a124585]::plumbing::QueryCtxt, false> 44: 0x7aca8348a034 - rustc_query_impl[3f261a864a124585]::query_impl::optimized_mir::get_query_non_incr::__rust_end_short_backtrace 45: 0x7aca833b2457 - rustc_middle[f06a2f49cb923fa3]::query::plumbing::query_get_at::<rustc_query_system[85f7d4985ebc0774]::query::caches::DefIdCache<rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 8usize]>>> 46: 0x7aca82209fc0 - <rustc_middle[f06a2f49cb923fa3]::ty::context::TyCtxt>::coroutine_layout 47: 0x7aca838254e2 - rustc_ty_utils[4b3be0d27c5e9905]::layout::layout_of_uncached 48: 0x7aca8381444b - rustc_ty_utils[4b3be0d27c5e9905]::layout::layout_of 49: 0x7aca838143d1 - rustc_query_impl[3f261a864a124585]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[3f261a864a124585]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 16usize]>> 50: 0x7aca838136d0 - rustc_query_system[85f7d4985ebc0774]::query::plumbing::try_execute_query::<rustc_query_impl[3f261a864a124585]::DynamicConfig<rustc_query_system[85f7d4985ebc0774]::query::caches::DefaultCache<rustc_middle[f06a2f49cb923fa3]::ty::ParamEnvAnd<rustc_middle[f06a2f49cb923fa3]::ty::Ty>, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[3f261a864a124585]::plumbing::QueryCtxt, false> 51: 0x7aca8381336f - rustc_query_impl[3f261a864a124585]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace 52: 0x7aca808e0b67 - <rustc_mir_transform[48c5b07b6fa30cb7]::known_panics_lint::KnownPanicsLint as rustc_mir_transform[48c5b07b6fa30cb7]::pass_manager::MirLint>::run_lint 53: 0x7aca83201c7b - rustc_mir_transform[48c5b07b6fa30cb7]::pass_manager::run_passes_inner 54: 0x7aca83a13f29 - rustc_mir_transform[48c5b07b6fa30cb7]::mir_drops_elaborated_and_const_checked 55: 0x7aca83a137fd - rustc_query_impl[3f261a864a124585]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[3f261a864a124585]::query_impl::mir_drops_elaborated_and_const_checked::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 8usize]>> 56: 0x7aca834b0eb3 - rustc_query_system[85f7d4985ebc0774]::query::plumbing::try_execute_query::<rustc_query_impl[3f261a864a124585]::DynamicConfig<rustc_query_system[85f7d4985ebc0774]::query::caches::VecCache<rustc_span[b5058cd9cdbacc64]::def_id::LocalDefId, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[3f261a864a124585]::plumbing::QueryCtxt, false> 57: 0x7aca834b0859 - rustc_query_impl[3f261a864a124585]::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace 58: 0x7aca83a20318 - rustc_interface[4a5f03b368ced297]::passes::analysis 59: 0x7aca83a1f21b - rustc_query_impl[3f261a864a124585]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[3f261a864a124585]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 1usize]>> 60: 0x7aca840d96a5 - rustc_query_system[85f7d4985ebc0774]::query::plumbing::try_execute_query::<rustc_query_impl[3f261a864a124585]::DynamicConfig<rustc_query_system[85f7d4985ebc0774]::query::caches::SingleCache<rustc_middle[f06a2f49cb923fa3]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[3f261a864a124585]::plumbing::QueryCtxt, false> 61: 0x7aca840d940f - rustc_query_impl[3f261a864a124585]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace 62: 0x7aca83fce6c5 - rustc_interface[4a5f03b368ced297]::interface::run_compiler::<core[c37d915429d9bf38]::result::Result<(), rustc_span[b5058cd9cdbacc64]::ErrorGuaranteed>, rustc_driver_impl[2ca809430a6bb1db]::run_compiler::{closure#0}>::{closure#1} 63: 0x7aca83fb51c9 - std[84685e2f5e49534c]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[4a5f03b368ced297]::util::run_in_thread_with_globals<rustc_interface[4a5f03b368ced297]::util::run_in_thread_pool_with_globals<rustc_interface[4a5f03b368ced297]::interface::run_compiler<core[c37d915429d9bf38]::result::Result<(), rustc_span[b5058cd9cdbacc64]::ErrorGuaranteed>, rustc_driver_impl[2ca809430a6bb1db]::run_compiler::{closure#0}>::{closure#1}, core[c37d915429d9bf38]::result::Result<(), rustc_span[b5058cd9cdbacc64]::ErrorGuaranteed>>::{closure#0}, core[c37d915429d9bf38]::result::Result<(), rustc_span[b5058cd9cdbacc64]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c37d915429d9bf38]::result::Result<(), rustc_span[b5058cd9cdbacc64]::ErrorGuaranteed>> 64: 0x7aca83fb4f7a - <<std[84685e2f5e49534c]::thread::Builder>::spawn_unchecked_<rustc_interface[4a5f03b368ced297]::util::run_in_thread_with_globals<rustc_interface[4a5f03b368ced297]::util::run_in_thread_pool_with_globals<rustc_interface[4a5f03b368ced297]::interface::run_compiler<core[c37d915429d9bf38]::result::Result<(), rustc_span[b5058cd9cdbacc64]::ErrorGuaranteed>, rustc_driver_impl[2ca809430a6bb1db]::run_compiler::{closure#0}>::{closure#1}, core[c37d915429d9bf38]::result::Result<(), rustc_span[b5058cd9cdbacc64]::ErrorGuaranteed>>::{closure#0}, core[c37d915429d9bf38]::result::Result<(), rustc_span[b5058cd9cdbacc64]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c37d915429d9bf38]::result::Result<(), rustc_span[b5058cd9cdbacc64]::ErrorGuaranteed>>::{closure#1} as core[c37d915429d9bf38]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} 65: 0x7aca857f542b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb5e78d42d6801749 at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/alloc/src/boxed.rs:2149:9 66: 0x7aca857f542b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd9416e19f44d968d at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/alloc/src/boxed.rs:2149:9 67: 0x7aca857f542b - std::sys::pal::unix::thread::Thread::new::thread_start::he0388d99656ed7ca at /rustc/49649bf3c5538531ade6834b9b308a6c8a5f3e8e/library/std/src/sys/pal/unix/thread.rs:108:17 68: 0x7aca7e6a6ded - <unknown> 69: 0x7aca7e72a0dc - <unknown> 70: 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: please make sure that you have updated to the latest nightly note: rustc 1.82.0-nightly (49649bf3c 2024-07-23) running on x86_64-unknown-linux-gnu note: compiler flags: -Z mir-opt-level=5 -Z dump-mir-dir=dir query stack during panic: #0 [optimized_mir] optimizing MIR for `handle_event::{closure#0}::{closure#0}` #1 [layout_of] computing layout of `{async block@/tmp/icemaker_global_tempdir.7wIEjd0lKecw/rustc_testrunner_tmpdir_reporting.168IfbM3nYxW/mvce.rs:6:5: 6:15}` end of query stack error: aborting due to 3 previous errors; 1 warning emitted Some errors have detailed explanations: E0412, E0574, E0601. For more information about an error, try `rustc --explain E0412`.