Closed
Description
While trying to minify the ICE from #73537 I stumpled upon a different ICE.
Backtrace
error[E0706]: functions in traits cannot be declared `async`
--> amadeus-core/src/par_stream.rs:62:5
|
62 | async fn reduce<P, B, R1F, R1, R3>(
| ^----
| |
| _____`async` because of this
| |
63 | | self,
64 | | ) {
65 | | let handles = vec![]
66 | | .into_iter()
67 | | .map(|tasks| {});
68 | | }
| |_____^
|
= note: `async` trait functions are not currently supported
= note: consider using the `async-trait` crate: https://crates.io/crates/async-trait
thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/librustc_hir/definitions.rs:316:35
stack backtrace:
0: 0x7f32261edf05 - backtrace::backtrace::libunwind::trace::h34afbfad7fd770fc
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
1: 0x7f32261edf05 - backtrace::backtrace::trace_unsynchronized::h460d522b1619a600
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
2: 0x7f32261edf05 - std::sys_common::backtrace::_print_fmt::ha45fac10086813b4
at src/libstd/sys_common/backtrace.rs:78
3: 0x7f32261edf05 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hde84f63fcfd0e6de
at src/libstd/sys_common/backtrace.rs:59
4: 0x7f322622b49c - core::fmt::write::h540ac4a6a1232abc
at src/libcore/fmt/mod.rs:1076
5: 0x7f32261dfd72 - std::io::Write::write_fmt::hc344eafd6e850b4d
at src/libstd/io/mod.rs:1537
6: 0x7f32261f2e30 - std::sys_common::backtrace::_print::h4db88ff15cb5d61d
at src/libstd/sys_common/backtrace.rs:62
7: 0x7f32261f2e30 - std::sys_common::backtrace::print::h5fc39e1b1f610bd3
at src/libstd/sys_common/backtrace.rs:49
8: 0x7f32261f2e30 - std::panicking::default_hook::{{closure}}::h59e55edacb1d974a
at src/libstd/panicking.rs:198
9: 0x7f32261f2b7c - std::panicking::default_hook::heee4c8016dfbf328
at src/libstd/panicking.rs:217
10: 0x7f322695ea73 - rustc_driver::report_ice::h26eb523a40d729cf
11: 0x7f321bbf7216 - <alloc::boxed::Box<F> as core::ops::function::Fn<A>>::call::h082305267bbe2157
at /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/liballoc/boxed.rs:1095
12: 0x7f321bc05fb5 - proc_macro::bridge::client::<impl proc_macro::bridge::Bridge>::enter::{{closure}}::{{closure}}::h93042890da1620b3
at /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/libproc_macro/bridge/client.rs:318
13: 0x7f32261f35a8 - std::panicking::rust_panic_with_hook::h8405b6301c79fb5a
at src/libstd/panicking.rs:524
14: 0x7f32261f317b - rust_begin_unwind
at src/libstd/panicking.rs:431
15: 0x7f3226228041 - core::panicking::panic_fmt::h78830ea6a34e7206
at src/libcore/panicking.rs:85
16: 0x7f3226227f8d - core::panicking::panic::h68e56c2eeba99c8c
at src/libcore/panicking.rs:50
17: 0x7f3228ee2e18 - rustc_middle::hir::map::Map::def_kind::hafb262fbf0d38c75
18: 0x7f3228ed701a - core::ops::function::FnOnce::call_once::hf8c5a3a31d68c4c7
19: 0x7f32293d0bb1 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::hddf6668a514f1551
20: 0x7f3228e598dd - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::hc013b7ff2582024e
21: 0x7f3229154952 - rustc_data_structures::stack::ensure_sufficient_stack::h52380575085609a2
22: 0x7f3228f872aa - rustc_query_system::query::plumbing::get_query_impl::hb3a05b7f5b583756
23: 0x7f32291c0a80 - rustc_middle::ty::util::<impl rustc_middle::ty::context::TyCtxt>::closure_base_def_id::h17764ecfb292c8f3
24: 0x7f3227596f30 - rustc_typeck::collect::generics_of::h2d71d824fa4bf7bc
25: 0x7f3227569c2b - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::generics_of>::compute::h69cce6614aed3c59
26: 0x7f32273fb043 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::h5f4e1d0635b188f7
27: 0x7f3227511126 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::h606eb85f7cd1a802
28: 0x7f3227544ec9 - rustc_data_structures::stack::ensure_sufficient_stack::h55c904426c20f7fc
29: 0x7f322745f7d8 - rustc_query_system::query::plumbing::get_query_impl::h57da19642e9c745d
30: 0x7f32274a4f64 - rustc_query_system::query::plumbing::ensure_query_impl::h94dcd0801933967a
31: 0x7f32274e9d7f - rustc_hir::intravisit::walk_expr::hf083e7c97404000d
32: 0x7f3227592bd9 - <rustc_typeck::collect::CollectItemTypesVisitor as rustc_hir::intravisit::Visitor>::visit_expr::h4760b49ab9b8385b
33: 0x7f32275845ce - rustc_hir::intravisit::Visitor::visit_stmt::hd7d75fd2d63dd139
34: 0x7f32274ea23f - rustc_hir::intravisit::walk_expr::hf083e7c97404000d
35: 0x7f32274e5f8e - rustc_hir::intravisit::walk_body::h56da48f921ac51fb
36: 0x7f32274d89ae - rustc_hir::intravisit::walk_trait_item::h6dbdc62e387e3321
37: 0x7f3227592f0d - <rustc_typeck::collect::CollectItemTypesVisitor as rustc_hir::intravisit::Visitor>::visit_trait_item::h585101dc821ed179
38: 0x7f32274fe2b8 - rustc_middle::hir::map::Map::visit_item_likes_in_module::h2fc5c339188d4a79
39: 0x7f32275907c4 - rustc_typeck::collect::collect_mod_item_types::h14a5b9d007c58603
40: 0x7f322760a835 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::collect_mod_item_types>::compute::h55f7d1c38c919e5c
41: 0x7f32273fbad1 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::h71d6d4a6cdfbae36
42: 0x7f3227513f94 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::haf98227a6d0ddc0c
43: 0x7f32275467a3 - rustc_data_structures::stack::ensure_sufficient_stack::h84406c3b568f39a8
44: 0x7f32274a16e3 - rustc_query_system::query::plumbing::get_query_impl::hfa21f15e8339624f
45: 0x7f32274a4aee - rustc_query_system::query::plumbing::ensure_query_impl::h8af3ba1f8784298a
46: 0x7f322760cd03 - rustc_session::session::Session::track_errors::h33a1cb2fba4e84c5
47: 0x7f32275a408b - rustc_typeck::check_crate::hd09a544480ba7537
48: 0x7f3226b001af - rustc_interface::passes::analysis::h3a6008da1c156296
49: 0x7f322694666b - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute::hae71a7f9d73047a0
50: 0x7f3226947df8 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::h6c2ce8b92f30caac
51: 0x7f32269bb644 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::hfe3c0a8b0dcc9800
52: 0x7f32269be959 - rustc_data_structures::stack::ensure_sufficient_stack::h80ac0f704de7cdf6
53: 0x7f3226924644 - rustc_query_system::query::plumbing::get_query_impl::hebe8aa5a8aac99c3
54: 0x7f3226946b0f - rustc_middle::ty::context::tls::enter_global::h614eb6f235bbc020
55: 0x7f32269193fa - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::hb3ecfe94ca03e6c6
56: 0x7f32269b9343 - rustc_span::with_source_map::h21eed361cfe861de
57: 0x7f322691ab16 - rustc_interface::interface::run_compiler_in_existing_thread_pool::h902d0e3e1f552acf
58: 0x7f32269441bd - scoped_tls::ScopedKey<T>::set::hbc88e7d76dd9a901
59: 0x7f322696a81a - std::sys_common::backtrace::__rust_begin_short_backtrace::h0f0c30d1296961bc
60: 0x7f32269275be - core::ops::function::FnOnce::call_once{{vtable.shim}}::h36b2cf3218c61088
61: 0x7f3226202daa - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h13d34828db364579
at /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/liballoc/boxed.rs:1081
62: 0x7f3226202daa - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd51b619e0f884abf
at /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/liballoc/boxed.rs:1081
63: 0x7f3226202daa - std::sys::unix::thread::Thread::new::thread_start::h02c6e34c2c73f344
at src/libstd/sys/unix/thread.rs:87
64: 0x7f322614b432 - start_thread
65: 0x7f32260679d3 - __clone
66: 0x0 - <unknown>
error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports
note: rustc 1.46.0-nightly (3503f565e 2020-07-02) running on x86_64-unknown-linux-gnu
note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type lib
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
#0 [def_kind] looking up definition kind of `par_stream::ParallelStream::reduce::{{closure}}#0`
#1 [generics_of] computing generics of `par_stream::ParallelStream::reduce::{{closure}}#0::{{closure}}#0`
#2 [collect_mod_item_types] collecting item types in module `par_stream`
#3 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error
rust/src/librustc_hir/definitions.rs
Lines 315 to 317 in 4a689da
This needs an MCVE
@rustbot modify labels: E-needs-mcve E-needs-bisection A-hir
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Area: The high-level intermediate representation (HIR)Category: This is a bug.Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustcCall for participation: This issue has a repro, but needs a Minimal Complete and Verifiable ExampleIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Relevant to the compiler team, which will review and decide on the PR/issue.