Closed
Description
Code
pub struct Thing;
impl Thing {
pub async fn call(&self) -> Result<(), ()> {
Ok(())
}
}
async fn async_main() -> Result<(), ()> {
// should be .call().await?
Thing {}.call()?;
Ok(())
}
fn main() {
// Don't bother to block_on to avoid dependency on futures
let _ = async_main();
}Meta
rustc --version --verbose:
rustc 1.45.0-nightly (4bd32c980 2020-05-29)
binary: rustc
commit-hash: 4bd32c98047a809ba5fd1fac2aa044638e5f2105
commit-date: 2020-05-29
host: x86_64-unknown-linux-gnu
release: 1.45.0-nightly
LLVM version: 10.0
rustc 1.45.0-nightly (4bd32c980 2020-05-29)
binary: rustc
commit-hash: 4bd32c98047a809ba5fd1fac2aa044638e5f2105
commit-date: 2020-05-29
host: x86_64-pc-windows-msvc
release: 1.45.0-nightly
LLVM version: 10.0
Error output
error: internal compiler error: src/librustc_middle/ich/impls_ty.rs:94: StableHasher: unexpected region '_#2r
thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:907:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
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 1.45.0-nightly (4bd32c980 2020-05-29) running on x86_64-unknown-linux-gnu
note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type bin
note: some of the compiler flags provided by cargo are hidden
error: aborting due to previous error
error: could not compile `rustc-missing-await-crash`.
To learn more, run the command again with --verbose.
Backtrace
error: internal compiler error: src/librustc_middle/ich/impls_ty.rs:94: StableHasher: unexpected region '_#2r
thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:907:9
stack backtrace:
0: backtrace::backtrace::libunwind::trace
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
1: backtrace::backtrace::trace_unsynchronized
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
2: std::sys_common::backtrace::_print_fmt
at src/libstd/sys_common/backtrace.rs:78
3: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
at src/libstd/sys_common/backtrace.rs:59
4: core::fmt::write
at src/libcore/fmt/mod.rs:1076
5: std::io::Write::write_fmt
at src/libstd/io/mod.rs:1537
6: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:62
7: std::sys_common::backtrace::print
at src/libstd/sys_common/backtrace.rs:49
8: std::panicking::default_hook::{{closure}}
at src/libstd/panicking.rs:198
9: std::panicking::default_hook
at src/libstd/panicking.rs:218
10: rustc_driver::report_ice
11: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:490
12: std::panicking::begin_panic
13: rustc_errors::HandlerInner::bug
14: rustc_errors::Handler::bug
15: rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}
16: rustc_middle::ty::context::tls::with_opt::{{closure}}
17: rustc_middle::ty::context::tls::with_opt
18: rustc_middle::util::bug::opt_span_bug_fmt
19: rustc_middle::util::bug::bug_fmt
20: rustc_middle::ich::impls_ty::<impl rustc_data_structures::stable_hasher::HashStable<rustc_middle::ich::hcx::StableHashingContext> for rustc_middle::ty::sty::RegionKind>::hash_stable
21: rustc_middle::ich::impls_ty::<impl rustc_data_structures::stable_hasher::HashStable<rustc_middle::ich::hcx::StableHashingContext> for &rustc_middle::ty::list::List<T>>::hash_stable
22: rustc_middle::ty::sty::_DERIVE_rustc_data_structures_stable_hasher_HashStable_rustc_middle_ich_StableHashingContext_ctx_FOR_TyKind::<impl rustc_data_structures::stable_hasher::HashStable<rustc_middle::ich::hcx::StableHashingContext> for rustc_middle::ty::sty::TyKind>::hash_stable
23: <T as rustc_query_system::dep_graph::dep_node::DepNodeParams<Ctxt>>::to_fingerprint
24: rustc_query_system::query::plumbing::get_query_impl
25: <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::error_reporting::suggestions::InferCtxtExt>::suggest_await_before_try
26: <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::error_reporting::InferCtxtExt>::report_selection_error
27: <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::error_reporting::InferCtxtExt>::report_fulfillment_errors
28: rustc_typeck::check::FnCtxt::check_argument_types
29: rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::confirm_builtin_call
30: rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::check_call
31: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
32: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
33: rustc_typeck::check::_match::<impl rustc_typeck::check::FnCtxt>::check_match
34: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
35: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
36: rustc_typeck::check::FnCtxt::check_stmt
37: rustc_typeck::check::FnCtxt::check_block_with_expected
38: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
39: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
40: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
41: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
42: rustc_typeck::check::FnCtxt::check_block_with_expected
43: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
44: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
45: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_return_expr
46: rustc_typeck::check::check_fn
47: rustc_typeck::check::closure::<impl rustc_typeck::check::FnCtxt>::check_expr_closure
48: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
49: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
50: rustc_typeck::check::FnCtxt::check_argument_types
51: rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::confirm_builtin_call
52: rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::check_call
53: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
54: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
55: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_return_expr
56: rustc_typeck::check::check_fn
57: rustc_middle::ty::context::GlobalCtxt::enter_local
58: rustc_typeck::check::typeck_tables_of
59: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::typeck_tables_of>::compute
60: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
61: rustc_data_structures::stack::ensure_sufficient_stack
62: rustc_query_system::query::plumbing::get_query_impl
63: rustc_mir_build::hair::cx::Cx::new
64: rustc_middle::ty::context::GlobalCtxt::enter_local
65: rustc_mir_build::build::mir_built
66: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::mir_built>::compute
67: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
68: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
69: rustc_query_system::query::plumbing::get_query_impl::{{closure}}
70: rustc_query_system::query::plumbing::get_query_impl
71: rustc_mir::transform::check_unsafety::unsafety_check_result
72: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::unsafety_check_result>::compute
73: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
74: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
75: rustc_query_system::query::plumbing::get_query_impl::{{closure}}
76: rustc_query_system::query::plumbing::get_query_impl
77: rustc_mir::transform::mir_const
78: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::mir_const>::compute
79: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
80: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
81: rustc_query_system::query::plumbing::get_query_impl::{{closure}}
82: rustc_query_system::query::plumbing::get_query_impl
83: rustc_mir::transform::mir_validated
84: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::mir_validated>::compute
85: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
86: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
87: rustc_query_system::query::plumbing::get_query_impl::{{closure}}
88: rustc_query_system::query::plumbing::get_query_impl
89: rustc_mir::borrow_check::mir_borrowck
90: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::mir_borrowck>::compute
91: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
92: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
93: rustc_data_structures::stack::ensure_sufficient_stack
94: rustc_query_system::query::plumbing::get_query_impl
95: rustc_typeck::collect::type_of::type_of
96: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
97: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
98: rustc_data_structures::stack::ensure_sufficient_stack
99: rustc_query_system::query::plumbing::get_query_impl
100: rustc_middle::ty::util::<impl rustc_middle::ty::context::TyCtxt>::try_expand_impl_trait_type::OpaqueTypeExpander::expand_opaque_ty
101: rustc_middle::ty::util::<impl rustc_middle::ty::context::TyCtxt>::try_expand_impl_trait_type
102: rustc_typeck::check::check_item_type
103: rustc_middle::hir::map::Map::visit_item_likes_in_module
104: rustc_typeck::check::check_mod_item_types
105: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::check_mod_item_types>::compute
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
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 1.45.0-nightly (4bd32c980 2020-05-29) running on x86_64-unknown-linux-gnu
note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type bin
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
#0 [typeck_tables_of] type-checking `async_main`
#1 [mir_built] building MIR for
#2 [unsafety_check_result] unsafety-checking `async_main`
#3 [mir_const] processing `async_main`
#4 [mir_validated] processing `async_main`
#5 [mir_borrowck] borrow-checking `async_main`
#6 [type_of] processing `async_main::{{opaque}}#0`
#7 [check_mod_item_types] checking item types in top-level module
#8 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error
error: could not compile `rustc-missing-await-crash`.
To learn more, run the command again with --verbose.
#72450 may be related, but I don't think this is the same bug because the above ICEs with nightly-2020-05-29.