Closed
Description
Code
#![feature(async_await)]
fn main() {
(|_| 2333).await
}Backtrace
Checking tmp2 v0.1.0 (/home/aloxaf/Coding/Rust/tmp2)
error[E0728]: `await` is only allowed inside `async` functions and blocks
--> src/main.rs:4:5
|
3 | fn main() {
| ---- this is not `async`
4 | (|_| 2333).await
| ^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks
thread 'rustc' panicked at 'src/librustc/hir/map/hir_id_validator.rs:26:
ItemLocalIds not assigned densely in ::main[0]. Max ItemLocalId = 5, missing IDs = ["[local_id: 1, node:unknown node (hir_id=HirId { owner: DefIndex(12), local_id: 1 })]"]; seens IDs = ["(HirId { owner: DefIndex(12), local_id: 0 } fn main (hir_id=HirId { owner: DefIndex(12), local_id: 0 }))", "(HirId { owner: DefIndex(12), local_id: 5 } unknown node (hir_id=HirId { owner: DefIndex(12), local_id: 5 }))", "(HirId { owner: DefIndex(12), local_id: 2 } expr (/*ERROR*/) (hir_id=HirId { owner: DefIndex(12), local_id: 2 }))", "(HirId { owner: DefIndex(12), local_id: 4 } expr { (/*ERROR*/) } (hir_id=HirId { owner: DefIndex(12), local_id: 4 }))", "(HirId { owner: DefIndex(12), local_id: 3 } block { (/*ERROR*/) } (hir_id=HirId { owner: DefIndex(12), local_id: 3 }))"]', src/librustc/util/bug.rs:37:26
stack backtrace:
0: backtrace::backtrace::libunwind::trace
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
1: backtrace::backtrace::trace_unsynchronized
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
2: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:47
3: std::sys_common::backtrace::print
at src/libstd/sys_common/backtrace.rs:36
4: std::panicking::default_hook::{{closure}}
at src/libstd/panicking.rs:198
5: std::panicking::default_hook
at src/libstd/panicking.rs:212
6: rustc::util::common::panic_hook
7: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:479
8: std::panicking::begin_panic
9: rustc::util::bug::opt_span_bug_fmt::{{closure}}
10: rustc::ty::context::tls::with_opt::{{closure}}
11: rustc::ty::context::tls::with_context_opt
12: rustc::ty::context::tls::with_opt
13: rustc::util::bug::opt_span_bug_fmt
14: rustc::util::bug::bug_fmt
15: rustc::hir::map::hir_id_validator::check_crate
16: rustc::util::common::time
17: rustc::hir::map::map_crate
18: rustc_interface::passes::create_global_ctxt::{{closure}}
19: rustc_data_structures::box_region::PinnedGenerator<I,A,R>::new
20: rustc_interface::passes::create_global_ctxt
21: rustc_interface::queries::Query<T>::compute
22: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::global_ctxt
23: rustc_interface::interface::run_compiler_in_existing_thread_pool
24: std::thread::local::LocalKey<T>::with
25: scoped_tls::ScopedKey<T>::set
26: syntax::with_globals
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
query stack during panic:
end of query stack
error: aborting due to previous error
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 1.37.0-nightly (d132f544f 2019-06-07) running on x86_64-unknown-linux-gnu
note: compiler flags: -C debuginfo=2 -C incremental --crate-type bin
note: some of the compiler flags provided by cargo are hidden
error: Could not compile `tmp2`.
To learn more, run the command again with --verbose.
Rustc version
rustc 1.37.0-nightly (d132f544f 2019-06-07)
binary: rustc
commit-hash: d132f544f9d74e3cc047ef211e57eae60b78e5c5
commit-date: 2019-06-07
host: x86_64-unknown-linux-gnu
release: 1.37.0-nightly
LLVM version: 8.0
This issue has been assigned to @doctorn via this comment.