Open
Description
auto-reduced (treereduce-rust):
fn main() {
|(1, 42), ()| yield;
}original:
#![feature(coroutines)]
fn main() {
#[coroutine]
|(1, 42), ()| {
//~^ error: too many parameters for a coroutine
yield
};
}Version information
rustc 1.88.0-nightly (c1b8b7e86 2025-04-09)
binary: rustc
commit-hash: c1b8b7e86f6ca59929ce08471d0877f748f84901
commit-date: 2025-04-09
host: x86_64-unknown-linux-gnu
release: 1.88.0-nightly
LLVM version: 20.1.2
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
error[E0658]: yield syntax is experimental
--> /tmp/icemaker_global_tempdir.cuDMHPQVcDO1/rustc_testrunner_tmpdir_reporting.HvMRq01KpEvD/mvce.rs:2:19
|
2 | |(1, 42), ()| yield;
| ^^^^^
|
= note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
= help: add `#![feature(coroutines)]` to the crate attributes to enable
= note: this compiler was built on 2025-04-09; consider upgrading it if it is out of date
error[E0658]: yield syntax is experimental
--> /tmp/icemaker_global_tempdir.cuDMHPQVcDO1/rustc_testrunner_tmpdir_reporting.HvMRq01KpEvD/mvce.rs:2:19
|
2 | |(1, 42), ()| yield;
| ^^^^^
|
= note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
= help: add `#![feature(yield_expr)]` to the crate attributes to enable
= note: this compiler was built on 2025-04-09; consider upgrading it if it is out of date
error: `yield` can only be used in `#[coroutine]` closures, or `gen` blocks
--> /tmp/icemaker_global_tempdir.cuDMHPQVcDO1/rustc_testrunner_tmpdir_reporting.HvMRq01KpEvD/mvce.rs:2:19
|
2 | |(1, 42), ()| yield;
| ^^^^^
|
help: use `#[coroutine]` to make this closure a coroutine
|
2 | #[coroutine] |(1, 42), ()| yield;
| ++++++++++++
error[E0628]: too many parameters for a coroutine (expected 0 or 1 parameters)
--> /tmp/icemaker_global_tempdir.cuDMHPQVcDO1/rustc_testrunner_tmpdir_reporting.HvMRq01KpEvD/mvce.rs:2:5
|
2 | |(1, 42), ()| yield;
| ^^^^^^^^^^^^^
error[E0005]: refutable pattern in closure argument
--> /tmp/icemaker_global_tempdir.cuDMHPQVcDO1/rustc_testrunner_tmpdir_reporting.HvMRq01KpEvD/mvce.rs:2:6
|
2 | |(1, 42), ()| yield;
| ^^^^^^^ patterns `(i32::MIN..=0_i32, _)` and `(2_i32..=i32::MAX, _)` not covered
|
= note: the matched value is of type `(i32, i32)`
thread 'rustc' panicked at /rust/deps/itertools-0.12.1/src/zip_eq_impl.rs:50:17:
itertools: .zip_eq() reached end of one iterator before the other
stack backtrace:
0: 0x75a844499933 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h0a0d14a4b4d0a1f3
1: 0x75a844c060d1 - core::fmt::write::hbb7b19f6d7e0bcfc
2: 0x75a846015211 - std::io::Write::write_fmt::h56be00b0cfe11b12
3: 0x75a844499792 - std::sys::backtrace::BacktraceLock::print::h2156a72749ab330b
4: 0x75a84449d27a - std::panicking::default_hook::{{closure}}::hd80cd3ad4d1b138b
5: 0x75a84449cdff - std::panicking::default_hook::hc85df78dfcd017bc
6: 0x75a8434f4333 - std[8937284e1d156103]::panicking::update_hook::<alloc[791d046a9b050803]::boxed::Box<rustc_driver_impl[4798b47694e9a4e]::install_ice_hook::{closure#1}>>::{closure#0}
7: 0x75a84449daf3 - std::panicking::rust_panic_with_hook::h7debfdbac178bc11
8: 0x75a84449d8fc - std::panicking::begin_panic::{{closure}}::hfc7f12f70922365f
9: 0x75a844499e09 - std::sys::backtrace::__rust_end_short_backtrace::hc45c915fb58aa1f1
10: 0x75a84189dfca - std::panicking::begin_panic::haf29001515796137
11: 0x75a845e8c060 - rustc_borrowck[2022ef40105ff589]::do_mir_borrowck
12: 0x75a845308a61 - <rustc_borrowck[2022ef40105ff589]::root_cx::BorrowCheckRootCtxt>::get_or_insert_nested
13: 0x75a845308d23 - <rustc_borrowck[2022ef40105ff589]::type_check::TypeChecker>::prove_closure_bounds
14: 0x75a8412ccaa8 - <rustc_borrowck[2022ef40105ff589]::type_check::TypeChecker as rustc_middle[2f69441c7b8c6072]::mir::visit::Visitor>::visit_rvalue
15: 0x75a84601e3a2 - <rustc_borrowck[2022ef40105ff589]::type_check::TypeChecker as rustc_middle[2f69441c7b8c6072]::mir::visit::Visitor>::visit_body
16: 0x75a845e897f3 - rustc_borrowck[2022ef40105ff589]::do_mir_borrowck
17: 0x75a845e76011 - rustc_borrowck[2022ef40105ff589]::mir_borrowck
18: 0x75a845e75e99 - rustc_query_impl[f5219312e31376b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f5219312e31376b]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[2f69441c7b8c6072]::query::erase::Erased<[u8; 8usize]>>
19: 0x75a844e5866c - rustc_query_system[34faab385f980ea8]::query::plumbing::try_execute_query::<rustc_query_impl[f5219312e31376b]::DynamicConfig<rustc_data_structures[e19e56e5fac41727]::vec_cache::VecCache<rustc_span[c9c449304cafad9b]::def_id::LocalDefId, rustc_middle[2f69441c7b8c6072]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[34faab385f980ea8]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[f5219312e31376b]::plumbing::QueryCtxt, false>
20: 0x75a844e5800b - rustc_query_impl[f5219312e31376b]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
21: 0x75a845663894 - rustc_interface[f94293adc0883baa]::passes::run_required_analyses
22: 0x75a845c286de - rustc_interface[f94293adc0883baa]::passes::analysis
23: 0x75a845c286b3 - rustc_query_impl[f5219312e31376b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f5219312e31376b]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[2f69441c7b8c6072]::query::erase::Erased<[u8; 0usize]>>
24: 0x75a845bebcbd - rustc_query_system[34faab385f980ea8]::query::plumbing::try_execute_query::<rustc_query_impl[f5219312e31376b]::DynamicConfig<rustc_query_system[34faab385f980ea8]::query::caches::SingleCache<rustc_middle[2f69441c7b8c6072]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[f5219312e31376b]::plumbing::QueryCtxt, false>
25: 0x75a845beb9b8 - rustc_query_impl[f5219312e31376b]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
26: 0x75a845f4510b - rustc_interface[f94293adc0883baa]::passes::create_and_enter_global_ctxt::<core[3680d8b8220f16e8]::option::Option<rustc_interface[f94293adc0883baa]::queries::Linker>, rustc_driver_impl[4798b47694e9a4e]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
27: 0x75a845d4f379 - rustc_interface[f94293adc0883baa]::interface::run_compiler::<(), rustc_driver_impl[4798b47694e9a4e]::run_compiler::{closure#0}>::{closure#1}
28: 0x75a845d2108f - std[8937284e1d156103]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[f94293adc0883baa]::util::run_in_thread_with_globals<rustc_interface[f94293adc0883baa]::util::run_in_thread_pool_with_globals<rustc_interface[f94293adc0883baa]::interface::run_compiler<(), rustc_driver_impl[4798b47694e9a4e]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
29: 0x75a845d2196b - <<std[8937284e1d156103]::thread::Builder>::spawn_unchecked_<rustc_interface[f94293adc0883baa]::util::run_in_thread_with_globals<rustc_interface[f94293adc0883baa]::util::run_in_thread_pool_with_globals<rustc_interface[f94293adc0883baa]::interface::run_compiler<(), rustc_driver_impl[4798b47694e9a4e]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[3680d8b8220f16e8]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
30: 0x75a845d22d6b - std::sys::pal::unix::thread::Thread::new::thread_start::he61a55009bcf6a9c
31: 0x75a83faa370a - <unknown>
32: 0x75a83fb27aac - <unknown>
33: 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 1.88.0-nightly (c1b8b7e86 2025-04-09) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [mir_borrowck] borrow-checking `main`
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 5 previous errors
Some errors have detailed explanations: E0005, E0628, E0658.
For more information about an error, try `rustc --explain E0005`.
@rustbot label +F-coroutines