Closed
Description
The following code ICE's on stable, beta and nightly:
async fn bug() {
'a: loop {
async { break 'a 0 }.await;
}
}Backtrace:
Compiling playground v0.0.1 (/playground)
error[E0267]: `break` inside of an `async` block
--> src/lib.rs:3:17
|
3 | async { break 'a 0 }.await;
| --^^^^^^^^^^--
| | |
| | cannot `break` inside of an `async` block
| enclosing `async` block
error: internal compiler error: src/librustc_typeck/check/mod.rs:537: could not find enclosing breakable with id HirId { owner: DefIndex(12), local_id: 46 }
thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:812:9
stack backtrace:
0: backtrace::backtrace::libunwind::trace
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88
1: backtrace::backtrace::trace_unsynchronized
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66
2: std::sys_common::backtrace::_print_fmt
at src/libstd/sys_common/backtrace.rs:76
3: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
at src/libstd/sys_common/backtrace.rs:60
4: core::fmt::write
at src/libcore/fmt/mod.rs:1030
5: std::io::Write::write_fmt
at src/libstd/io/mod.rs:1412
6: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:64
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:196
9: std::panicking::default_hook
at src/libstd/panicking.rs:210
10: rustc_driver::report_ice
11: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:477
12: std::panicking::begin_panic
13: rustc_errors::HandlerInner::bug
14: rustc_errors::Handler::bug
15: rustc::util::bug::opt_span_bug_fmt::{{closure}}
16: rustc::ty::context::tls::with_opt::{{closure}}
17: rustc::ty::context::tls::with_context_opt
18: rustc::ty::context::tls::with_opt
19: rustc::util::bug::opt_span_bug_fmt
20: rustc::util::bug::bug_fmt
21: rustc_typeck::check::EnclosingBreakables::find_breakable::{{closure}}
22: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
23: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
24: rustc_typeck::check::FnCtxt::check_block_with_expected
25: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
26: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
27: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_return_expr
28: rustc_typeck::check::check_fn
29: rustc_typeck::check::closure::<impl rustc_typeck::check::FnCtxt>::check_expr_closure
30: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
31: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
32: rustc_typeck::check::FnCtxt::check_argument_types
33: rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::confirm_builtin_call
34: rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::check_call
35: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
36: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
37: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_meets_expectation_or_error
38: rustc_typeck::check::_match::<impl rustc_typeck::check::FnCtxt>::check_match
39: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
40: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
41: rustc_typeck::check::FnCtxt::check_stmt
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::FnCtxt::check_block_with_expected
46: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
47: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
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_block_with_expected
51: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
52: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
53: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_return_expr
54: rustc_typeck::check::check_fn
55: rustc_typeck::check::closure::<impl rustc_typeck::check::FnCtxt>::check_expr_closure
56: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
57: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
58: rustc_typeck::check::FnCtxt::check_argument_types
59: rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::confirm_builtin_call
60: rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::check_call
61: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind
62: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs
63: rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_return_expr
64: rustc_typeck::check::check_fn
65: rustc::ty::context::GlobalCtxt::enter_local
66: rustc_typeck::check::typeck_tables_of
67: rustc::ty::query::__query_compute::typeck_tables_of
68: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::typeck_tables_of>::compute
69: rustc::dep_graph::graph::DepGraph::with_task_impl
70: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
71: rustc::ty::query::__query_compute::typeck_tables_of
72: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::typeck_tables_of>::compute
73: rustc::dep_graph::graph::DepGraph::with_task_impl
74: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
75: rustc_typeck::collect::checked_type_of
76: rustc_typeck::collect::type_of
77: rustc::ty::query::__query_compute::type_of
78: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::type_of>::compute
79: rustc::dep_graph::graph::DepGraph::with_task_impl
80: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
81: rustc::hir::intravisit::walk_expr
82: rustc::hir::intravisit::Visitor::visit_fn
83: rustc::hir::intravisit::walk_item
84: <rustc_typeck::collect::CollectItemTypesVisitor as rustc::hir::intravisit::Visitor>::visit_item
85: rustc::hir::map::Map::visit_item_likes_in_module
86: rustc_typeck::collect::collect_mod_item_types
87: rustc::ty::query::__query_compute::collect_mod_item_types
88: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::collect_mod_item_types>::compute
89: rustc::dep_graph::graph::DepGraph::with_task_impl
90: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
91: rustc_typeck::check_crate::{{closure}}::{{closure}}
92: rustc::util::common::time
93: rustc_typeck::check_crate
94: rustc_interface::passes::analysis
95: rustc::ty::query::__query_compute::analysis
96: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
97: rustc_interface::passes::BoxedGlobalCtxt::access::{{closure}}
98: rustc_interface::passes::create_global_ctxt::{{closure}}
99: rustc_interface::interface::run_compiler_in_existing_thread_pool
100: std::thread::local::LocalKey<T>::with
101: scoped_tls::ScopedKey<T>::set
102: syntax::with_globals
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 1.39.0 (4560ea788 2019-11-04) running on x86_64-unknown-linux-gnu
note: compiler flags: -C opt-level=3 -C codegen-units=1 --crate-type lib
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
thread 'rustc' panicked at 'already borrowed: BorrowMutError', src/libcore/result.rs:1165:5
stack backtrace:
0: 0x7fe9be0b7af4 - backtrace::backtrace::libunwind::trace::hda41dbcdfba36aa0
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88
1: 0x7fe9be0b7af4 - backtrace::backtrace::trace_unsynchronized::h1a8d6e1f8cb3f5d4
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66
2: 0x7fe9be0b7af4 - std::sys_common::backtrace::_print_fmt::h610c4127487e10da
at src/libstd/sys_common/backtrace.rs:76
3: 0x7fe9be0b7af4 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h0722dc552e01bd1d
at src/libstd/sys_common/backtrace.rs:60
4: 0x7fe9be0f012c - core::fmt::write::h01edf6dd68a42c9c
at src/libcore/fmt/mod.rs:1030
5: 0x7fe9be0abd17 - std::io::Write::write_fmt::hf15985f193f03c04
at src/libstd/io/mod.rs:1412
6: 0x7fe9be0bc325 - std::sys_common::backtrace::_print::hd8d5d08a1795e743
at src/libstd/sys_common/backtrace.rs:64
7: 0x7fe9be0bc325 - std::sys_common::backtrace::print::hf89a79e3921a2366
at src/libstd/sys_common/backtrace.rs:49
8: 0x7fe9be0bc325 - std::panicking::default_hook::{{closure}}::h3a8f42beb3bb8ae3
at src/libstd/panicking.rs:196
9: 0x7fe9be0bc016 - std::panicking::default_hook::h8f803b0bc31a5c37
at src/libstd/panicking.rs:210
10: 0x7fe9be5f3483 - rustc_driver::report_ice::he98718c53edc6d3d
11: 0x7fe9be0bcb0c - std::panicking::rust_panic_with_hook::h825f041245da8739
at src/libstd/panicking.rs:477
12: 0x7fe9be0bc5c2 - std::panicking::continue_panic_fmt::hbe0378e33481e81b
at src/libstd/panicking.rs:380
13: 0x7fe9be0bc4b6 - rust_begin_unwind
at src/libstd/panicking.rs:307
14: 0x7fe9be0e9aca - core::panicking::panic_fmt::h527855ce0bc891f6
at src/libcore/panicking.rs:85
15: 0x7fe9be0e9d07 - core::result::unwrap_failed::ha8b77e6004f0ba38
at src/libcore/result.rs:1165
16: 0x7fe9c03cefe5 - rustc_errors::Handler::force_print_diagnostic::h807dd1aae3e0d79e
17: 0x7fe9bfca1d91 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::try_print_query_stack::h8734d6360e0a8b59
18: 0x7fe9be5f4095 - rustc_driver::report_ice::he98718c53edc6d3d
19: 0x7fe9be0bcb0c - std::panicking::rust_panic_with_hook::h825f041245da8739
at src/libstd/panicking.rs:477
20: 0x7fe9c03b637d - std::panicking::begin_panic::h577649efa65d7301
21: 0x7fe9c03cf743 - rustc_errors::HandlerInner::bug::hfd27cc932b37506a
22: 0x7fe9c03ce62a - rustc_errors::Handler::bug::h32e2ca63254dbbec
23: 0x7fe9bfc5e8c3 - rustc::util::bug::opt_span_bug_fmt::{{closure}}::hf2652d3cbc7068ac
24: 0x7fe9bfc59933 - rustc::ty::context::tls::with_opt::{{closure}}::h0fe4f06c0a285fde
25: 0x7fe9bfc598a3 - rustc::ty::context::tls::with_context_opt::h01f88b941c2d3d77
26: 0x7fe9bfc598e7 - rustc::ty::context::tls::with_opt::hac6f601ca34cd941
27: 0x7fe9bfc5e7d8 - rustc::util::bug::opt_span_bug_fmt::h234c815c9e7b30ef
28: 0x7fe9bfc5e742 - rustc::util::bug::bug_fmt::hca65a18e8bb5d55b
29: 0x7fe9beb6f8a2 - rustc_typeck::check::EnclosingBreakables::find_breakable::{{closure}}::h265e5fc67c32c4af
30: 0x7fe9beb57c9d - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
31: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
32: 0x7fe9beb839d8 - rustc_typeck::check::FnCtxt::check_block_with_expected::h0bf314ef8ed232a6
33: 0x7fe9beb4fcf3 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
34: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
35: 0x7fe9beb58d9b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_return_expr::h51bf174a038068dd
36: 0x7fe9beb71e3d - rustc_typeck::check::check_fn::hb04722ffaefc34ec
37: 0x7fe9beb67169 - rustc_typeck::check::closure::<impl rustc_typeck::check::FnCtxt>::check_expr_closure::h29325402c2b92831
38: 0x7fe9beb4f903 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
39: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
40: 0x7fe9beb80a30 - rustc_typeck::check::FnCtxt::check_argument_types::h648ecc2af68d79cc
41: 0x7fe9beb6b042 - rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::confirm_builtin_call::ha7eae76e9c28b73b
42: 0x7fe9beb69561 - rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::check_call::h45d30abc30b22158
43: 0x7fe9beb4fcd8 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
44: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
45: 0x7fe9beb4ef09 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_meets_expectation_or_error::he950c77272da7372
46: 0x7fe9beb3d08e - rustc_typeck::check::_match::<impl rustc_typeck::check::FnCtxt>::check_match::h4ebac9f0c5152075
47: 0x7fe9beb50228 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
48: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
49: 0x7fe9beb8346e - rustc_typeck::check::FnCtxt::check_stmt::h0ba900aec3e1ac68
50: 0x7fe9beb8399b - rustc_typeck::check::FnCtxt::check_block_with_expected::h0bf314ef8ed232a6
51: 0x7fe9beb51aa8 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
52: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
53: 0x7fe9beb839d8 - rustc_typeck::check::FnCtxt::check_block_with_expected::h0bf314ef8ed232a6
54: 0x7fe9beb4fcf3 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
55: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
56: 0x7fe9beb4f920 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
57: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
58: 0x7fe9beb839d8 - rustc_typeck::check::FnCtxt::check_block_with_expected::h0bf314ef8ed232a6
59: 0x7fe9beb4fcf3 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
60: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
61: 0x7fe9beb58d9b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_return_expr::h51bf174a038068dd
62: 0x7fe9beb71e3d - rustc_typeck::check::check_fn::hb04722ffaefc34ec
63: 0x7fe9beb67169 - rustc_typeck::check::closure::<impl rustc_typeck::check::FnCtxt>::check_expr_closure::h29325402c2b92831
64: 0x7fe9beb4f903 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
65: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
66: 0x7fe9beb80a30 - rustc_typeck::check::FnCtxt::check_argument_types::h648ecc2af68d79cc
67: 0x7fe9beb6b042 - rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::confirm_builtin_call::ha7eae76e9c28b73b
68: 0x7fe9beb69561 - rustc_typeck::check::callee::<impl rustc_typeck::check::FnCtxt>::check_call::h45d30abc30b22158
69: 0x7fe9beb4fcd8 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::h8b25c6ef69e01f12
70: 0x7fe9beb4f28b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h0000f1a19a63396f
71: 0x7fe9beb58d9b - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_return_expr::h51bf174a038068dd
72: 0x7fe9beb71e3d - rustc_typeck::check::check_fn::hb04722ffaefc34ec
73: 0x7fe9becea518 - rustc::ty::context::GlobalCtxt::enter_local::hee87012a37ec7481
74: 0x7fe9beb70ea2 - rustc_typeck::check::typeck_tables_of::h7e98a74ad7491971
75: 0x7fe9bebc24ca - rustc::ty::query::__query_compute::typeck_tables_of::h8235d6e55b8e3584
76: 0x7fe9bec5c15b - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::typeck_tables_of>::compute::hef02a238f3e43402
77: 0x7fe9bec00bea - rustc::dep_graph::graph::DepGraph::with_task_impl::hd911b0f10264fdeb
78: 0x7fe9becdac8b - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::hfde020d3574d1a10
79: 0x7fe9bebc24ca - rustc::ty::query::__query_compute::typeck_tables_of::h8235d6e55b8e3584
80: 0x7fe9bec5c15b - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::typeck_tables_of>::compute::hef02a238f3e43402
81: 0x7fe9bec00bea - rustc::dep_graph::graph::DepGraph::with_task_impl::hd911b0f10264fdeb
82: 0x7fe9becdac8b - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::hfde020d3574d1a10
83: 0x7fe9bed210ae - rustc_typeck::collect::checked_type_of::hd3908c8eaed72ecd
84: 0x7fe9bed207dc - rustc_typeck::collect::type_of::h799e995bf65f21ec
85: 0x7fe9bebc40b7 - rustc::ty::query::__query_compute::type_of::hb01507aa4b57e392
86: 0x7fe9bec5be5b - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::type_of>::compute::hd6cd78f07fee48ed
87: 0x7fe9bebfdf7a - rustc::dep_graph::graph::DepGraph::with_task_impl::hbdb7bb8db373711b
88: 0x7fe9bec6b158 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::h0ad13fb369585832
89: 0x7fe9bed3fbf0 - rustc::hir::intravisit::walk_expr::hf4b6465856d88960
90: 0x7fe9becfff2c - rustc::hir::intravisit::Visitor::visit_fn::hd86c16bc3957ea4d
91: 0x7fe9bed422f9 - rustc::hir::intravisit::walk_item::h2499ad75ffa206ec
92: 0x7fe9bed1c75d - <rustc_typeck::collect::CollectItemTypesVisitor as rustc::hir::intravisit::Visitor>::visit_item::h6ecf11c5154ce45d
93: 0x7fe9bebc7103 - rustc::hir::map::Map::visit_item_likes_in_module::h6cf58cf1c61058c9
94: 0x7fe9bed1c424 - rustc_typeck::collect::collect_mod_item_types::ha8af4c2694cae051
95: 0x7fe9bebc344a - rustc::ty::query::__query_compute::collect_mod_item_types::h0959d140ce4a445c
96: 0x7fe9bec5c34b - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::collect_mod_item_types>::compute::hcc8bedd87b11d3e0
97: 0x7fe9bebefe9d - rustc::dep_graph::graph::DepGraph::with_task_impl::h1149bcd7b6e6f8f9
98: 0x7fe9bec7e5aa - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::h1ad8f3fe22fc6341
99: 0x7fe9bebe723d - rustc_typeck::check_crate::{{closure}}::{{closure}}::hef852192e4b21571
100: 0x7fe9bebc7766 - rustc::util::common::time::h6c804872fd5ef88f
101: 0x7fe9bed973fc - rustc_typeck::check_crate::h2e77f97476aecad8
102: 0x7fe9be6a200a - rustc_interface::passes::analysis::h7d37d49a7360493d
103: 0x7fe9be5b5c01 - rustc::ty::query::__query_compute::analysis::h1c5cc76ea5bb496b
104: 0x7fe9be59ed8e - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::hcf7bc9d073dcb36b
105: 0x7fe9be5bd42a - rustc_interface::passes::BoxedGlobalCtxt::access::{{closure}}::h7fc0f9f179325408
106: 0x7fe9be71e1da - rustc_interface::passes::create_global_ctxt::{{closure}}::h10595b15ffb5db35
107: 0x7fe9be5bf64e - rustc_interface::interface::run_compiler_in_existing_thread_pool::ha009ae4607895a11
108: 0x7fe9be5f5362 - std::thread::local::LocalKey<T>::with::h30eaff0b6e71bc49
109: 0x7fe9be5fa3ce - scoped_tls::ScopedKey<T>::set::h6ab0051cc42102a7
110: 0x7fe9be61b1a2 - syntax::with_globals::h9994c1c3242d3263
111: 0x7fe9be587e10 - std::sys_common::backtrace::__rust_begin_short_backtrace::h229c554686840b66
112: 0x7fe9be0cd25a - __rust_maybe_catch_panic
at src/libpanic_unwind/lib.rs:80
113: 0x7fe9be5b1879 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hf2e117c529f2753f
114: 0x7fe9be09e1ff - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h483711add4ba2330
at /rustc/4560ea788cb760f0a34127156c78e2552949f734/src/liballoc/boxed.rs:922
115: 0x7fe9be0cbf00 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h7605b45eb29ed0be
at /rustc/4560ea788cb760f0a34127156c78e2552949f734/src/liballoc/boxed.rs:922
116: 0x7fe9be0cbf00 - std::sys_common::thread::start_thread::h557b0c2dc4449562
at src/libstd/sys_common/thread.rs:13
117: 0x7fe9be0cbf00 - std::sys::unix::thread::Thread::new::thread_start::h7c2a7f9b68fe4bba
at src/libstd/sys/unix/thread.rs:79
118: 0x7fe9bde386db - start_thread
119: 0x7fe9bd75588f - __clone
120: 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 1.39.0 (4560ea788 2019-11-04) running on x86_64-unknown-linux-gnu
note: compiler flags: -C opt-level=3 -C codegen-units=1 --crate-type lib
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
thread panicked while processing panic. aborting.
error: could not compile `playground`.