Closed
Description
auto-reduced (treereduce-rust):
#![feature(type_alias_impl_trait)]
use std::future::Future;
type FutNothing<'a> = impl 'a + Future<Output = ()>;
async fn operation(_: &mut ()) -> () {
call(operation).await
}
async fn call<F>(_f: F)
where
for<'any> F: FnMut(&'any mut ()) -> FutNothing<'any>,
{
}original:
#![feature(type_alias_impl_trait)]
use std::future::Future;
type FutNothing<'a> = impl 'a + Future<Output = ()>;
async fn operation(x: &mut ()) -> () {
call(operation).await
}
async fn indirect() {
call(operation).await
}
async fn call<F>(mut f: F)
where
for<'any> F: FnMut(&'any mut ()) -> FutNothing<'any>,
{
f(&mut ()).await
}Version information
rustc 1.79.0-nightly (3cdcdaf31 2024-03-18)
binary: rustc
commit-hash: 3cdcdaf31b45f8045164aae9604573d23091970b
commit-date: 2024-03-18
host: x86_64-unknown-linux-gnu
release: 1.79.0-nightly
LLVM version: 18.1.2
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc --edition=2021
Program output
error[E0658]: `impl Trait` in type aliases is unstable
--> /tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:3:23
|
3 | type FutNothing<'a> = impl 'a + Future<Output = ()>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
= help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable
= note: this compiler was built on 2024-03-18; consider upgrading it if it is out of date
error[E0601]: `main` function not found in crate `mvce`
--> /tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:13:2
|
13 | }
| ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs`
error: unconstrained opaque type
--> /tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:3:23
|
3 | type FutNothing<'a> = impl 'a + Future<Output = ()>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `FutNothing` must be used in combination with a concrete type within the same module
warning: unused variable: `x`
--> /tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:5:20
|
5 | async fn operation(x: &mut ()) -> () {
| ^ help: if this is intentional, prefix it with an underscore: `_x`
|
= note: `#[warn(unused_variables)]` on by default
error: internal compiler error: compiler/rustc_middle/src/ty/opaque_types.rs:122:17: unexpected region kind in opaque type: RePlaceholder(!2_BoundRegion { var: 0, kind: BrNamed(DefId(0:10 ~ mvce[abe4]::call::'any), 'any) })
thread 'rustc' panicked at compiler/rustc_middle/src/util/bug.rs:35:44:
Box<dyn Any>
stack backtrace:
0: 0x7fb5fd58bfa5 - std::backtrace_rs::backtrace::libunwind::trace::h14c26439c9e659cb
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
1: 0x7fb5fd58bfa5 - std::backtrace_rs::backtrace::trace_unsynchronized::h44d92edd05bbbfda
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fb5fd58bfa5 - std::sys_common::backtrace::_print_fmt::h13f1beea5570cb83
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7fb5fd58bfa5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb8ca44e969e3f71b
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fb5fd5dcfeb - core::fmt::rt::Argument::fmt::h5c946a89981df55e
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/core/src/fmt/rt.rs:142:9
5: 0x7fb5fd5dcfeb - core::fmt::write::hd586e7360777cc96
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/core/src/fmt/mod.rs:1153:17
6: 0x7fb5fd580cbf - std::io::Write::write_fmt::h710cbd7bbf99ccca
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/io/mod.rs:1843:15
7: 0x7fb5fd58bd7e - std::sys_common::backtrace::_print::hf1afff5c335e465f
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7fb5fd58bd7e - std::sys_common::backtrace::print::he54a51a147efc885
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7fb5fd58e9f9 - std::panicking::default_hook::{{closure}}::hcd08c4e3ffa464ca
10: 0x7fb5fd58e763 - std::panicking::default_hook::h2663042b363aa298
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/panicking.rs:292:9
11: 0x7fb6005ba58f - std[f1ab4ce7166604a0]::panicking::update_hook::<alloc[ef09d9835563b69e]::boxed::Box<rustc_driver_impl[76e846938966200a]::install_ice_hook::{closure#0}>>::{closure#0}
12: 0x7fb5fd58f150 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcd6186c20f61b1dd
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/alloc/src/boxed.rs:2034:9
13: 0x7fb5fd58f150 - std::panicking::rust_panic_with_hook::h2a6da5de52d72055
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/panicking.rs:783:13
14: 0x7fb6005e6a54 - std[f1ab4ce7166604a0]::panicking::begin_panic::<rustc_errors[c906f5c4cf1f88ae]::ExplicitBug>::{closure#0}
15: 0x7fb6005e3976 - std[f1ab4ce7166604a0]::sys_common::backtrace::__rust_end_short_backtrace::<std[f1ab4ce7166604a0]::panicking::begin_panic<rustc_errors[c906f5c4cf1f88ae]::ExplicitBug>::{closure#0}, !>
16: 0x7fb6005e3656 - std[f1ab4ce7166604a0]::panicking::begin_panic::<rustc_errors[c906f5c4cf1f88ae]::ExplicitBug>
17: 0x7fb6005efed1 - <rustc_errors[c906f5c4cf1f88ae]::diagnostic::BugAbort as rustc_errors[c906f5c4cf1f88ae]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
18: 0x7fb600a75b91 - rustc_middle[712e48954d6afe8b]::util::bug::opt_span_bug_fmt::<rustc_span[74819862fbf5924e]::span_encoding::Span>::{closure#0}
19: 0x7fb600a58ffa - rustc_middle[712e48954d6afe8b]::ty::context::tls::with_opt::<rustc_middle[712e48954d6afe8b]::util::bug::opt_span_bug_fmt<rustc_span[74819862fbf5924e]::span_encoding::Span>::{closure#0}, !>::{closure#0}
20: 0x7fb600a58e98 - rustc_middle[712e48954d6afe8b]::ty::context::tls::with_context_opt::<rustc_middle[712e48954d6afe8b]::ty::context::tls::with_opt<rustc_middle[712e48954d6afe8b]::util::bug::opt_span_bug_fmt<rustc_span[74819862fbf5924e]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
21: 0x7fb5fe79c5a0 - rustc_middle[712e48954d6afe8b]::util::bug::bug_fmt
22: 0x7fb6025aba13 - <rustc_middle[712e48954d6afe8b]::ty::opaque_types::ReverseMapper as rustc_type_ir[ce90e5ef7eb5dee5]::fold::TypeFolder<rustc_middle[712e48954d6afe8b]::ty::context::TyCtxt>>::fold_region
23: 0x7fb6025aa9c3 - <&rustc_middle[712e48954d6afe8b]::ty::list::List<rustc_middle[712e48954d6afe8b]::ty::generic_args::GenericArg> as rustc_type_ir[ce90e5ef7eb5dee5]::fold::TypeFoldable<rustc_middle[712e48954d6afe8b]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[712e48954d6afe8b]::ty::opaque_types::ReverseMapper>
24: 0x7fb6025ab023 - <rustc_middle[712e48954d6afe8b]::ty::opaque_types::ReverseMapper as rustc_type_ir[ce90e5ef7eb5dee5]::fold::TypeFolder<rustc_middle[712e48954d6afe8b]::ty::context::TyCtxt>>::fold_ty
25: 0x7fb6025aa13d - <rustc_middle[712e48954d6afe8b]::ty::OpaqueHiddenType>::remap_generic_params_to_declaration_params
26: 0x7fb6025a8b45 - <rustc_infer[49b3e6d6e2d70b3c]::infer::InferCtxt as rustc_borrowck[5b2dcb3cbda17836]::region_infer::opaque_types::InferCtxtExt>::infer_opaque_definition_from_instantiation
27: 0x7fb5ff0c2ad2 - rustc_borrowck[5b2dcb3cbda17836]::nll::compute_regions
28: 0x7fb6027e1b6f - rustc_borrowck[5b2dcb3cbda17836]::do_mir_borrowck
29: 0x7fb601be19e6 - rustc_borrowck[5b2dcb3cbda17836]::mir_borrowck
30: 0x7fb601be14d7 - rustc_query_impl[8c6bc27b23dbc83d]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8c6bc27b23dbc83d]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>
31: 0x7fb601be34ee - rustc_query_system[7897cb83f5f0e4a4]::query::plumbing::try_execute_query::<rustc_query_impl[8c6bc27b23dbc83d]::DynamicConfig<rustc_query_system[7897cb83f5f0e4a4]::query::caches::VecCache<rustc_span[74819862fbf5924e]::def_id::LocalDefId, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[8c6bc27b23dbc83d]::plumbing::QueryCtxt, false>
32: 0x7fb601be300c - rustc_query_impl[8c6bc27b23dbc83d]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
33: 0x7fb60237f11c - rustc_middle[712e48954d6afe8b]::query::plumbing::query_get_at::<rustc_query_system[7897cb83f5f0e4a4]::query::caches::VecCache<rustc_span[74819862fbf5924e]::def_id::LocalDefId, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>>
34: 0x7fb60237f18e - <rustc_borrowck[5b2dcb3cbda17836]::type_check::TypeChecker>::prove_closure_bounds
35: 0x7fb601d2cd1a - <rustc_borrowck[5b2dcb3cbda17836]::type_check::TypeChecker>::typeck_mir
36: 0x7fb5ff078e6a - rustc_borrowck[5b2dcb3cbda17836]::type_check::type_check
37: 0x7fb5ff0b2ac7 - rustc_borrowck[5b2dcb3cbda17836]::nll::compute_regions
38: 0x7fb6027e1b6f - rustc_borrowck[5b2dcb3cbda17836]::do_mir_borrowck
39: 0x7fb601be19e6 - rustc_borrowck[5b2dcb3cbda17836]::mir_borrowck
40: 0x7fb601be14d7 - rustc_query_impl[8c6bc27b23dbc83d]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8c6bc27b23dbc83d]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>
41: 0x7fb601be34ee - rustc_query_system[7897cb83f5f0e4a4]::query::plumbing::try_execute_query::<rustc_query_impl[8c6bc27b23dbc83d]::DynamicConfig<rustc_query_system[7897cb83f5f0e4a4]::query::caches::VecCache<rustc_span[74819862fbf5924e]::def_id::LocalDefId, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[8c6bc27b23dbc83d]::plumbing::QueryCtxt, false>
42: 0x7fb601be300c - rustc_query_impl[8c6bc27b23dbc83d]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
43: 0x7fb60229f7b9 - rustc_middle[712e48954d6afe8b]::query::plumbing::query_get_at::<rustc_query_system[7897cb83f5f0e4a4]::query::caches::VecCache<rustc_span[74819862fbf5924e]::def_id::LocalDefId, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>>
44: 0x7fb6022999ad - rustc_hir_analysis[1e7a6b85d58e7e91]::collect::type_of::type_of_opaque
45: 0x7fb602299837 - rustc_query_impl[8c6bc27b23dbc83d]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8c6bc27b23dbc83d]::query_impl::type_of_opaque::dynamic_query::{closure#2}::{closure#0}, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>
46: 0x7fb6018ef699 - rustc_query_system[7897cb83f5f0e4a4]::query::plumbing::try_execute_query::<rustc_query_impl[8c6bc27b23dbc83d]::DynamicConfig<rustc_query_system[7897cb83f5f0e4a4]::query::caches::DefIdCache<rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[8c6bc27b23dbc83d]::plumbing::QueryCtxt, false>
47: 0x7fb6027bbd5e - rustc_query_impl[8c6bc27b23dbc83d]::query_impl::type_of_opaque::get_query_non_incr::__rust_end_short_backtrace
48: 0x7fb601e87956 - rustc_middle[712e48954d6afe8b]::query::plumbing::query_get_at::<rustc_query_system[7897cb83f5f0e4a4]::query::caches::DefIdCache<rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>>
49: 0x7fb5ff60471c - rustc_hir_analysis[1e7a6b85d58e7e91]::collect::type_of::type_of
50: 0x7fb6018f0a62 - rustc_query_impl[8c6bc27b23dbc83d]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8c6bc27b23dbc83d]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>
51: 0x7fb6018ef699 - rustc_query_system[7897cb83f5f0e4a4]::query::plumbing::try_execute_query::<rustc_query_impl[8c6bc27b23dbc83d]::DynamicConfig<rustc_query_system[7897cb83f5f0e4a4]::query::caches::DefIdCache<rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[8c6bc27b23dbc83d]::plumbing::QueryCtxt, false>
52: 0x7fb6018ef19b - rustc_query_impl[8c6bc27b23dbc83d]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
53: 0x7fb601e87956 - rustc_middle[712e48954d6afe8b]::query::plumbing::query_get_at::<rustc_query_system[7897cb83f5f0e4a4]::query::caches::DefIdCache<rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 8usize]>>>
54: 0x7fb601e8db6a - rustc_hir_analysis[1e7a6b85d58e7e91]::check::check::check_item_type
55: 0x7fb601eb349c - rustc_hir_analysis[1e7a6b85d58e7e91]::check::wfcheck::check_well_formed
56: 0x7fb601eb1f87 - rustc_query_impl[8c6bc27b23dbc83d]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8c6bc27b23dbc83d]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 1usize]>>
57: 0x7fb601eb1700 - rustc_query_system[7897cb83f5f0e4a4]::query::plumbing::try_execute_query::<rustc_query_impl[8c6bc27b23dbc83d]::DynamicConfig<rustc_query_system[7897cb83f5f0e4a4]::query::caches::VecCache<rustc_hir[d2c1ab639b195ce5]::hir_id::OwnerId, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[8c6bc27b23dbc83d]::plumbing::QueryCtxt, false>
58: 0x7fb601eb147f - rustc_query_impl[8c6bc27b23dbc83d]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace
59: 0x7fb601eaf3ba - rustc_hir_analysis[1e7a6b85d58e7e91]::check::wfcheck::check_mod_type_wf
60: 0x7fb601eaf1e1 - rustc_query_impl[8c6bc27b23dbc83d]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8c6bc27b23dbc83d]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 1usize]>>
61: 0x7fb602284cb0 - rustc_query_system[7897cb83f5f0e4a4]::query::plumbing::try_execute_query::<rustc_query_impl[8c6bc27b23dbc83d]::DynamicConfig<rustc_query_system[7897cb83f5f0e4a4]::query::caches::DefaultCache<rustc_span[74819862fbf5924e]::def_id::LocalModDefId, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[8c6bc27b23dbc83d]::plumbing::QueryCtxt, false>
62: 0x7fb602284a5b - rustc_query_impl[8c6bc27b23dbc83d]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace
63: 0x7fb601bdebfb - rustc_hir_analysis[1e7a6b85d58e7e91]::check_crate
64: 0x7fb601cc29aa - rustc_interface[6e8cd5a4c59e5ecd]::passes::analysis
65: 0x7fb601cc2519 - rustc_query_impl[8c6bc27b23dbc83d]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8c6bc27b23dbc83d]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 1usize]>>
66: 0x7fb6025715a5 - rustc_query_system[7897cb83f5f0e4a4]::query::plumbing::try_execute_query::<rustc_query_impl[8c6bc27b23dbc83d]::DynamicConfig<rustc_query_system[7897cb83f5f0e4a4]::query::caches::SingleCache<rustc_middle[712e48954d6afe8b]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[8c6bc27b23dbc83d]::plumbing::QueryCtxt, false>
67: 0x7fb602571309 - rustc_query_impl[8c6bc27b23dbc83d]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
68: 0x7fb602490084 - rustc_interface[6e8cd5a4c59e5ecd]::interface::run_compiler::<core[254dfe32d5b92b13]::result::Result<(), rustc_span[74819862fbf5924e]::ErrorGuaranteed>, rustc_driver_impl[76e846938966200a]::run_compiler::{closure#0}>::{closure#0}
69: 0x7fb602560a45 - std[f1ab4ce7166604a0]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[6e8cd5a4c59e5ecd]::util::run_in_thread_with_globals<rustc_interface[6e8cd5a4c59e5ecd]::util::run_in_thread_pool_with_globals<rustc_interface[6e8cd5a4c59e5ecd]::interface::run_compiler<core[254dfe32d5b92b13]::result::Result<(), rustc_span[74819862fbf5924e]::ErrorGuaranteed>, rustc_driver_impl[76e846938966200a]::run_compiler::{closure#0}>::{closure#0}, core[254dfe32d5b92b13]::result::Result<(), rustc_span[74819862fbf5924e]::ErrorGuaranteed>>::{closure#0}, core[254dfe32d5b92b13]::result::Result<(), rustc_span[74819862fbf5924e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[254dfe32d5b92b13]::result::Result<(), rustc_span[74819862fbf5924e]::ErrorGuaranteed>>
70: 0x7fb602560872 - <<std[f1ab4ce7166604a0]::thread::Builder>::spawn_unchecked_<rustc_interface[6e8cd5a4c59e5ecd]::util::run_in_thread_with_globals<rustc_interface[6e8cd5a4c59e5ecd]::util::run_in_thread_pool_with_globals<rustc_interface[6e8cd5a4c59e5ecd]::interface::run_compiler<core[254dfe32d5b92b13]::result::Result<(), rustc_span[74819862fbf5924e]::ErrorGuaranteed>, rustc_driver_impl[76e846938966200a]::run_compiler::{closure#0}>::{closure#0}, core[254dfe32d5b92b13]::result::Result<(), rustc_span[74819862fbf5924e]::ErrorGuaranteed>>::{closure#0}, core[254dfe32d5b92b13]::result::Result<(), rustc_span[74819862fbf5924e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[254dfe32d5b92b13]::result::Result<(), rustc_span[74819862fbf5924e]::ErrorGuaranteed>>::{closure#1} as core[254dfe32d5b92b13]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
71: 0x7fb5fd598919 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h24cb68345bc0eeeb
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/alloc/src/boxed.rs:2020:9
72: 0x7fb5fd598919 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h1d32c6c52d61212f
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/alloc/src/boxed.rs:2020:9
73: 0x7fb5fd598919 - std::sys::pal::unix::thread::Thread::new::thread_start::h789f3c93e78a3e64
at /rustc/3cdcdaf31b45f8045164aae9604573d23091970b/library/std/src/sys/pal/unix/thread.rs:108:17
74: 0x7fb5fd37f55a - <unknown>
75: 0x7fb5fd3fca3c - <unknown>
76: 0x0 - <unknown>
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 1.79.0-nightly (3cdcdaf31 2024-03-18) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z dump-mir-dir=dir
query stack during panic:
#0 [mir_borrowck] borrow-checking `operation::{closure#0}`
#1 [mir_borrowck] borrow-checking `operation`
#2 [type_of_opaque] computing type of opaque `operation::{opaque#0}`
#3 [type_of] computing type of `operation::{opaque#0}`
#4 [check_well_formed] checking that `operation::{opaque#0}` is well-formed
#5 [check_mod_type_wf] checking that types are well-formed in top-level module
#6 [analysis] running analysis passes on this crate
end of query stack
warning: unused variable: `f`
--> /tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:9:22
|
9 | async fn call<F>(mut f: F)
| ^ help: if this is intentional, prefix it with an underscore: `_f`
warning: variable does not need to be mutable
--> /tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:9:18
|
9 | async fn call<F>(mut f: F)
| ----^
| |
| help: remove this `mut`
|
= note: `#[warn(unused_mut)]` on by default
error[E0792]: expected generic lifetime parameter, found `'any`
--> /tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:12:1
|
3 | type FutNothing<'a> = impl 'a + Future<Output = ()>;
| -- this generic parameter must be used with a generic lifetime parameter
...
12 | / {
13 | | }
| |_^
error: concrete type differs from previous defining opaque type use
--> /tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:5:1
|
5 | async fn operation(x: &mut ()) -> () {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `FutNothing<'_>`, got `{async fn body@/tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:5:38: 7:2}`
|
note: previous use here
--> /tmp/icemaker_global_tempdir.r1Tr5xXMwC2J/rustc_testrunner_tmpdir_reporting.TROxRMfkZ9Oy/mvce.rs:6:5
|
6 | call(operation).await
| ^^^^^^^^^^^^^^^
error: aborting due to 6 previous errors; 3 warnings emitted
Some errors have detailed explanations: E0601, E0658, E0792.
For more information about an error, try `rustc --explain E0601`.