internal compiler error: no errors encountered even though delay_span_bug issued

[flippette]

Summary

use std::{marker::PhantomData, sync::MutexGuard};

type PhantomNonSend = PhantomData<MutexGuard<'static, ()>>;

async fn non_send_future() {
    let non_send = NonSend {
        _marker: PhantomData,
    };

    other_future().await;

    #[allow(clippy::drop_non_drop)]
    drop(non_send);
}

async fn other_future() {}

struct NonSend {
    _marker: PhantomNonSend,
}

Version

rustc 1.70.0 (90c541806 2023-05-31)
binary: rustc
commit-hash: 90c541806f23a127002de5b4038be731ba1458ca
commit-date: 2023-05-31
host: x86_64-unknown-linux-gnu
release: 1.70.0
LLVM version: 16.0.2

Error output

RUST_BACKTRACE=1 cargo clippy -- -W clippy::future-not-send

Backtrace

``` error: internal compiler error: no errors encountered even though `delay_span_bug` issued

error: internal compiler error: used a TypeErrCtxt without failing compilation
|
= note: delayed at 0: <rustc_errors::HandlerInner>::emit_diagnostic
1: <rustc_errors::Handler>::delay_span_bug::<rustc_span::span_encoding::Span, &str>
2: core::ptr::drop_in_place::<rustc_infer::infer::error_reporting::TypeErrCtxt>
3: <clippy_utils::diagnostics::span_lint_and_then<rustc_lint::context::LateContext, rustc_span::span_encoding::Span, <clippy_lints::future_not_send::FutureNotSend as rustc_lint::passes::LateLintPass>::check_fn::{closure#0}>::{closure#0} as core::ops::function::FnOnce<(&mut rustc_errors::diagnostic_builder::DiagnosticBuilder<()>,)>>::call_once::{shim:vtable#0}
4: rustc_middle::lint::struct_lint_level::struct_lint_level_impl::<&str>
5: rustc_middle::lint::struct_lint_level::<&str, clippy_utils::diagnostics::span_lint_and_then<rustc_lint::context::LateContext, rustc_span::span_encoding::Span, <clippy_lints::future_not_send::FutureNotSend as rustc_lint::passes::LateLintPass>::check_fn::{closure#0}>::{closure#0}>
6: <rustc_lint::context::LateContext as rustc_lint::context::LintContext>::struct_span_lint::<rustc_span::span_encoding::Span, &str, clippy_utils::diagnostics::span_lint_and_then<rustc_lint::context::LateContext, rustc_span::span_encoding::Span, <clippy_lints::future_not_send::FutureNotSend as rustc_lint::passes::LateLintPass>::check_fn::{closure#0}>::{closure#0}>
7: <clippy_lints::future_not_send::FutureNotSend as rustc_lint::passes::LateLintPass>::check_fn
8: <rustc_lint::late::RuntimeCombinedLateLintPass as rustc_lint::passes::LateLintPass>::check_fn
9: <rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass> as rustc_hir::intravisit::Visitor>::visit_fn
10: rustc_hir::intravisit::walk_item::<rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass>>
11: <rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass> as rustc_hir::intravisit::Visitor>::visit_nested_item
12: rustc_hir::intravisit::walk_mod::<rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass>>
13: rustc_lint::late::late_lint_crate::<rustc_lint::BuiltinCombinedLateLintPass>
14: <rustc_session::session::Session>::time::<(), rustc_lint::late::check_crate<rustc_lint::BuiltinCombinedLateLintPass, rustc_interface::passes::analysis::{closure#6}::{closure#1}::{closure#2}::{closure#0}::{closure#0}>::{closure#0}::{closure#0}>
15: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#6}::{closure#1}::{closure#2}::{closure#0}>
16: <core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::analysis::{closure#6}::{closure#1}> as core::ops::function::FnOnce<()>>::call_once
17: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#6}>
18: rustc_interface::passes::analysis
19: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>
20: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
21: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_driver_impl::run_compiler::{closure#1}::{closure#2}::{closure#4}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
22: <rustc_interface::interface::Compiler>::enter::<rustc_driver_impl::run_compiler::{closure#1}::{closure#2}, core::result::Result<core::option::Option<rustc_interface::queries::Linker>, rustc_span::ErrorGuaranteed>>
23: rustc_span::set_source_map::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
24: std::sys_common::backtrace::_rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
25: <std::thread::Builder::spawn_unchecked<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
26: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce>::call_once
at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1973:9
27: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce>::call_once
at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1973:9
28: std::sys::unix::thread::Thread::new::thread_start
at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/sys/unix/thread.rs:108:17
29:
30:

thread 'rustc' panicked at 'Box', compiler/rustc_errors/src/lib.rs:1679:13
stack backtrace:
0: std::panicking::begin_panic::<rustc_errors::DelayedBugPanic>
1: <rustc_errors::HandlerInner>::flush_delayed::<alloc::vec::Vec<rustc_errors::DelayedDiagnostic>, &str>
2: <rustc_middle::ty::context::GlobalCtxt>::enter::<<rustc_interface::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core::result::Result<alloc::boxed::Box, rustc_span::ErrorGuaranteed>>
3: <rustc_interface::queries::Queries>::ongoing_codegen
4: <rustc_interface::interface::Compiler>::enter::<rustc_driver_impl::run_compiler::{closure#1}::{closure#2}, core::result::Result<core::option::Option<rustc_interface::queries::Linker>, rustc_span::ErrorGuaranteed>>
5: rustc_span::set_source_map::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
note: Some details are omitted, run with RUST_BACKTRACE=full for a verbose backtrace.

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-clippy/issues/new

note: Clippy version: clippy 0.1.70 (90c5418 2023-05-31)

query stack during panic:
end of query stack

</p>
</details>

[Centri3]

Can you try this on the newest nightly? This is probably a duplicate of #10645.

[flippette]

It is indeed a duplicate. No bug here!