error: expected type, found lifetime
--> /tmp/icemaker_global_tempdir.mCrvX9yCDWyy/rustc_testrunner_tmpdir_reporting.fUKak9Z01wCD/mvce.rs:13:43
|
13 | fn method<'a>(_a: CustomMarkerRef<'a>) -> 'a () {
| ^^ expected type
|
help: you might have meant to write a reference type here
|
13 | fn method<'a>(_a: CustomMarkerRef<'a>) -> &'a () {
| +
error[E0573]: expected type, found derive macro `Debug`
--> /tmp/icemaker_global_tempdir.mCrvX9yCDWyy/rustc_testrunner_tmpdir_reporting.fUKak9Z01wCD/mvce.rs:9:41
|
9 | struct CustomMarkerRef<'a>(PhantomData<(Debug, Clone, Copy)>);
| ^^^^^ not a type
|
help: consider importing this trait instead
|
4 + use std::fmt::Debug;
|
warning: unused import: `Reborrow`
--> /tmp/icemaker_global_tempdir.mCrvX9yCDWyy/rustc_testrunner_tmpdir_reporting.fUKak9Z01wCD/mvce.rs:4:46
|
4 | use std::marker::{CoerceShared, PhantomData, Reborrow};
| ^^^^^^^^
|
= note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
error[E0782]: expected a type, found a trait
--> /tmp/icemaker_global_tempdir.mCrvX9yCDWyy/rustc_testrunner_tmpdir_reporting.fUKak9Z01wCD/mvce.rs:9:48
|
9 | struct CustomMarkerRef<'a>(PhantomData<(Debug, Clone, Copy)>);
| ^^^^^
|
help: you can add the `dyn` keyword if you want a trait object
|
9 | struct CustomMarkerRef<'a>(PhantomData<(Debug, dyn Clone, Copy)>);
| +++
error[E0782]: expected a type, found a trait
--> /tmp/icemaker_global_tempdir.mCrvX9yCDWyy/rustc_testrunner_tmpdir_reporting.fUKak9Z01wCD/mvce.rs:9:55
|
9 | struct CustomMarkerRef<'a>(PhantomData<(Debug, Clone, Copy)>);
| ^^^^
|
help: you can add the `dyn` keyword if you want a trait object
|
9 | struct CustomMarkerRef<'a>(PhantomData<(Debug, Clone, dyn Copy)>);
| +++
error[E0277]: the trait bound `CustomMarkerRef<'a>: Copy` is not satisfied
--> /tmp/icemaker_global_tempdir.mCrvX9yCDWyy/rustc_testrunner_tmpdir_reporting.fUKak9Z01wCD/mvce.rs:10:10
|
10 | impl<'a> CoerceShared<CustomMarkerRef<'a>> for CustomMarker<'a> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `CustomMarkerRef<'a>`
|
note: required by a bound in `CoerceShared`
--> /home/matthias/.rustup/toolchains/master/lib/rustlib/src/rust/library/core/src/marker.rs:1363:32
|
1363 | pub trait CoerceShared<Target: Copy>: Reborrow {
| ^^^^ required by this bound in `CoerceShared`
help: consider annotating `CustomMarkerRef<'a>` with `#[derive(Copy)]`
|
9 + #[derive(Copy)]
10 | struct CustomMarkerRef<'a>(PhantomData<(Debug, Clone, Copy)>);
|
error[E0277]: the trait bound `CustomMarker<'a>: Reborrow` is not satisfied
--> /tmp/icemaker_global_tempdir.mCrvX9yCDWyy/rustc_testrunner_tmpdir_reporting.fUKak9Z01wCD/mvce.rs:10:48
|
10 | impl<'a> CoerceShared<CustomMarkerRef<'a>> for CustomMarker<'a> {}
| ^^^^^^^^^^^^^^^^ unsatisfied trait bound
|
help: the nightly-only, unstable trait `Reborrow` is not implemented for `CustomMarker<'a>`
--> /tmp/icemaker_global_tempdir.mCrvX9yCDWyy/rustc_testrunner_tmpdir_reporting.fUKak9Z01wCD/mvce.rs:6:1
|
6 | struct CustomMarker<'a>(PhantomData<&'a ()>);
| ^^^^^^^^^^^^^^^^^^^^^^^
note: required by a bound in `CoerceShared`
--> /home/matthias/.rustup/toolchains/master/lib/rustlib/src/rust/library/core/src/marker.rs:1363:39
|
1363 | pub trait CoerceShared<Target: Copy>: Reborrow {
| ^^^^^^^^ required by this bound in `CoerceShared`
thread 'rustc' (4098030) panicked at /rustc-dev/3e353d7353b0cd6fa4eefd5c882457cc2708184c/compiler/rustc_borrowck/src/type_check/mod.rs:2529:22:
called `Result::unwrap()` on an `Err` value: NoSolution
stack backtrace:
0: 0x7fcc4f074239 - <<std[db65628f2330fd11]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[b3c617e8375f9bd0]::fmt::Display>::fmt
1: 0x7fcc4f61b788 - core[b3c617e8375f9bd0]::fmt::write
2: 0x7fcc4f08ac66 - <std[db65628f2330fd11]::sys::stdio::unix::Stderr as std[db65628f2330fd11]::io::Write>::write_fmt
3: 0x7fcc4f04a2de - std[db65628f2330fd11]::panicking::default_hook::{closure#0}
4: 0x7fcc4f0678f3 - std[db65628f2330fd11]::panicking::default_hook
5: 0x7fcc4df544d1 - std[db65628f2330fd11]::panicking::update_hook::<alloc[b10a1c065189447]::boxed::Box<rustc_driver_impl[1f444ccaa450aabc]::install_ice_hook::{closure#1}>>::{closure#0}
6: 0x7fcc4f067bd2 - std[db65628f2330fd11]::panicking::panic_with_hook
7: 0x7fcc4f04a3a2 - std[db65628f2330fd11]::panicking::panic_handler::{closure#0}
8: 0x7fcc4f0410b9 - std[db65628f2330fd11]::sys::backtrace::__rust_end_short_backtrace::<std[db65628f2330fd11]::panicking::panic_handler::{closure#0}, !>
9: 0x7fcc4f04be0d - __rustc[87b1f669d989e0ab]::rust_begin_unwind
10: 0x7fcc4c12c50c - core[b3c617e8375f9bd0]::panicking::panic_fmt
11: 0x7fcc4b799682 - core[b3c617e8375f9bd0]::result::unwrap_failed
12: 0x7fcc504c23c7 - <rustc_borrowck[543291a75b63dc2a]::type_check::TypeChecker as rustc_middle[4a2cff3451d2bad5]::mir::visit::Visitor>::visit_body
13: 0x7fcc5047286c - rustc_borrowck[543291a75b63dc2a]::type_check::type_check
14: 0x7fcc500d7176 - <rustc_borrowck[543291a75b63dc2a]::root_cx::BorrowCheckRootCtxt>::do_mir_borrowck
15: 0x7fcc500d2b1b - rustc_borrowck[543291a75b63dc2a]::mir_borrowck
16: 0x7fcc500d28e9 - rustc_query_impl[3b9ecabc2cca1a8f]::query_impl::mir_borrowck::invoke_provider_fn::__rust_begin_short_backtrace
17: 0x7fcc4f76d6a6 - rustc_query_impl[3b9ecabc2cca1a8f]::execution::try_execute_query::<rustc_data_structures[4a3bb46d707d6722]::vec_cache::VecCache<rustc_span[749aae40fdac821d]::def_id::LocalDefId, rustc_middle[4a2cff3451d2bad5]::query::erase::ErasedData<[u8; 8usize]>, rustc_middle[4a2cff3451d2bad5]::dep_graph::graph::DepNodeIndex>, false>
18: 0x7fcc4f76fdc3 - rustc_query_impl[3b9ecabc2cca1a8f]::query_impl::mir_borrowck::execute_query_non_incr::__rust_end_short_backtrace
19: 0x7fcc4f76ff94 - <rustc_middle[4a2cff3451d2bad5]::ty::context::TyCtxt>::par_hir_body_owners::<rustc_interface[232b63f46aa35c0e]::passes::run_required_analyses::{closure#2}::{closure#0}>::{closure#0}
20: 0x7fcc4f76f276 - rustc_interface[232b63f46aa35c0e]::passes::analysis
21: 0x7fcc507822c9 - rustc_query_impl[3b9ecabc2cca1a8f]::execution::try_execute_query::<rustc_middle[4a2cff3451d2bad5]::query::caches::SingleCache<rustc_middle[4a2cff3451d2bad5]::query::erase::ErasedData<[u8; 0usize]>>, false>
22: 0x7fcc50781f33 - rustc_query_impl[3b9ecabc2cca1a8f]::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
23: 0x7fcc507c765b - rustc_interface[232b63f46aa35c0e]::interface::run_compiler::<(), rustc_driver_impl[1f444ccaa450aabc]::run_compiler::{closure#0}>::{closure#1}
24: 0x7fcc50775c3e - std[db65628f2330fd11]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[232b63f46aa35c0e]::util::run_in_thread_with_globals<rustc_interface[232b63f46aa35c0e]::util::run_in_thread_pool_with_globals<rustc_interface[232b63f46aa35c0e]::interface::run_compiler<(), rustc_driver_impl[1f444ccaa450aabc]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
25: 0x7fcc5077632d - <std[db65628f2330fd11]::thread::lifecycle::spawn_unchecked<rustc_interface[232b63f46aa35c0e]::util::run_in_thread_with_globals<rustc_interface[232b63f46aa35c0e]::util::run_in_thread_pool_with_globals<rustc_interface[232b63f46aa35c0e]::interface::run_compiler<(), rustc_driver_impl[1f444ccaa450aabc]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[b3c617e8375f9bd0]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
26: 0x7fcc5077712c - <std[db65628f2330fd11]::sys::thread::unix::Thread>::new::thread_start
27: 0x7fcc4a2a597a - <unknown>
28: 0x7fcc4a3292bc - <unknown>
29: 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 1.97.0-nightly (3e353d735 2026-05-08) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z dump-mir-dir=dir
query stack during panic:
#0 [mir_borrowck] borrow-checking `main`
#1 [analysis] running analysis passes on crate `mvce`
end of query stack
error: aborting due to 6 previous errors; 1 warning emitted
Some errors have detailed explanations: E0277, E0573, E0782.
For more information about an error, try `rustc --explain E0277`.
auto-reduced (treereduce-rust):
original:
Version information
Possibly related line of code:
rust/compiler/rustc_borrowck/src/type_check/mod.rs
Lines 2523 to 2535 in 3e353d7
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc --edition=2024Program output
@rustbot label +F-reborrow