compiler unexpectedly panicked. this is a bug.

[duelafn]

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

Installed via rustup: 1.70-x86_64-unknown-linux-gnu (default) (override)

$ rustc --version
rustc 1.70.0 (90c541806 2023-05-31)

Command executed:

cargo clippy --color=always -- -W clippy::nursery

Error trace (RUST_BACKTRACE=full)

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_impl_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_impl_item
            12: rustc_hir::intravisit::walk_item::<rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass>>
            13: <rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass> as rustc_hir::intravisit::Visitor>::visit_nested_item
            14: rustc_hir::intravisit::walk_mod::<rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass>>
            15: <rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass> as rustc_hir::intravisit::Visitor>::visit_nested_item
            16: rustc_hir::intravisit::walk_mod::<rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass>>
            17: <rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass> as rustc_hir::intravisit::Visitor>::visit_nested_item
            18: rustc_hir::intravisit::walk_mod::<rustc_lint::late::LateContextAndPass<rustc_lint::late::RuntimeCombinedLateLintPass>>
            19: rustc_lint::late::late_lint_crate::<rustc_lint::BuiltinCombinedLateLintPass>
            20: <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}>
            21: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#6}::{closure#1}::{closure#2}::{closure#0}>
            22: <core::panic::unwind_safe::AssertUnwindSafe<rustc_interface::passes::analysis::{closure#6}::{closure#1}> as core::ops::function::FnOnce<()>>::call_once
            23: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#6}>
            24: rustc_interface::passes::analysis
            25: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<rustc_query_system::query::plumbing::execute_job_incr<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>::{closure#2}, (rustc_middle::query::erase::Erased<[u8; 1]>, rustc_query_system::dep_graph::graph::DepNodeIndex)>::{closure#0}, (rustc_middle::query::erase::Erased<[u8; 1]>, rustc_query_system::dep_graph::graph::DepNodeIndex)>
            26: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>
            27: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
            28: <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>>
            29: <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>>
            30: 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}>
            31: 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>>
            32: <<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}
            33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                       at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1973:9
            34: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                       at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1973:9
            35: std::sys::unix::thread::Thread::new::thread_start
                       at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/sys/unix/thread.rs:108:17
            36: start_thread
                       at ./nptl/./nptl/pthread_create.c:477:8
            37: clone
                       at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95


thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1679:13
stack backtrace:
   0:     0x7fe547364cca - std::backtrace_rs::backtrace::libunwind::trace::h9a6b80bbf328ba5d
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fe547364cca - std::backtrace_rs::backtrace::trace_unsynchronized::hd162ec543a11886b
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fe547364cca - std::sys_common::backtrace::_print_fmt::h78a5099be12f51a6
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fe547364cca - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha1c5390454d74f71
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fe5473c90cf - core::fmt::write::h9ffde816c577717b
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/core/src/fmt/mod.rs:1254:17
   5:     0x7fe547357805 - std::io::Write::write_fmt::h88186074961638e4
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/io/mod.rs:1698:15
   6:     0x7fe547364a95 - std::sys_common::backtrace::_print::h184198273ed08d59
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7fe547364a95 - std::sys_common::backtrace::print::h1b4d8e7add699453
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7fe54736773e - std::panicking::default_hook::{{closure}}::h393bcea75423915a
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/panicking.rs:269:22
   9:     0x7fe5473674e5 - std::panicking::default_hook::h48c64f31d8b3fd03
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/panicking.rs:288:9
  10:     0x560b2f521572 - clippy_driver[6aa1725373a10098]::ICE_HOOK::{closure#0}::{closure#0}
  11:     0x7fe547367f34 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb9b860f5a1175bda
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1987:9
  12:     0x7fe547367f34 - std::panicking::rust_panic_with_hook::hafdc493a79370062
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/panicking.rs:695:13
  13:     0x7fe54a678c31 - std[b70fedfd8b77e9]::panicking::begin_panic::<rustc_errors[c06e44e71f249a31]::DelayedBugPanic>::{closure#0}
  14:     0x7fe54a6785e6 - std[b70fedfd8b77e9]::sys_common::backtrace::__rust_end_short_backtrace::<std[b70fedfd8b77e9]::panicking::begin_panic<rustc_errors[c06e44e71f249a31]::DelayedBugPanic>::{closure#0}, !>
  15:     0x7fe54a68ea96 - std[b70fedfd8b77e9]::panicking::begin_panic::<rustc_errors[c06e44e71f249a31]::DelayedBugPanic>
  16:     0x7fe549b91d55 - <rustc_errors[c06e44e71f249a31]::HandlerInner>::flush_delayed::<alloc[c91da12302dbbf86]::vec::Vec<rustc_errors[c06e44e71f249a31]::DelayedDiagnostic>, &str>
  17:     0x7fe54991018c - <rustc_middle[a487dff4633a86d0]::ty::context::GlobalCtxt>::enter::<<rustc_interface[7aa24cde61830128]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[da82827a87f140f9]::result::Result<alloc[c91da12302dbbf86]::boxed::Box<dyn core[da82827a87f140f9]::any::Any>, rustc_span[2f805118d893a80f]::ErrorGuaranteed>>
  18:     0x7fe54990e858 - <rustc_interface[7aa24cde61830128]::queries::Queries>::ongoing_codegen
  19:     0x7fe54990e061 - <rustc_interface[7aa24cde61830128]::interface::Compiler>::enter::<rustc_driver_impl[fe6df70259db788d]::run_compiler::{closure#1}::{closure#2}, core[da82827a87f140f9]::result::Result<core[da82827a87f140f9]::option::Option<rustc_interface[7aa24cde61830128]::queries::Linker>, rustc_span[2f805118d893a80f]::ErrorGuaranteed>>
  20:     0x7fe549909281 - rustc_span[2f805118d893a80f]::set_source_map::<core[da82827a87f140f9]::result::Result<(), rustc_span[2f805118d893a80f]::ErrorGuaranteed>, rustc_interface[7aa24cde61830128]::interface::run_compiler<core[da82827a87f140f9]::result::Result<(), rustc_span[2f805118d893a80f]::ErrorGuaranteed>, rustc_driver_impl[fe6df70259db788d]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  21:     0x7fe54990882f - std[b70fedfd8b77e9]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[7aa24cde61830128]::util::run_in_thread_pool_with_globals<rustc_interface[7aa24cde61830128]::interface::run_compiler<core[da82827a87f140f9]::result::Result<(), rustc_span[2f805118d893a80f]::ErrorGuaranteed>, rustc_driver_impl[fe6df70259db788d]::run_compiler::{closure#1}>::{closure#0}, core[da82827a87f140f9]::result::Result<(), rustc_span[2f805118d893a80f]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[da82827a87f140f9]::result::Result<(), rustc_span[2f805118d893a80f]::ErrorGuaranteed>>
  22:     0x7fe549eec661 - <<std[b70fedfd8b77e9]::thread::Builder>::spawn_unchecked_<rustc_interface[7aa24cde61830128]::util::run_in_thread_pool_with_globals<rustc_interface[7aa24cde61830128]::interface::run_compiler<core[da82827a87f140f9]::result::Result<(), rustc_span[2f805118d893a80f]::ErrorGuaranteed>, rustc_driver_impl[fe6df70259db788d]::run_compiler::{closure#1}>::{closure#0}, core[da82827a87f140f9]::result::Result<(), rustc_span[2f805118d893a80f]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[da82827a87f140f9]::result::Result<(), rustc_span[2f805118d893a80f]::ErrorGuaranteed>>::{closure#1} as core[da82827a87f140f9]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  23:     0x7fe5473723b5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha1f2224656a778fb
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1973:9
  24:     0x7fe5473723b5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::haa29ed9703f354b7
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/alloc/src/boxed.rs:1973:9
  25:     0x7fe5473723b5 - std::sys::unix::thread::Thread::new::thread_start::h33b6dae3e3692197
                               at /rustc/90c541806f23a127002de5b4038be731ba1458ca/library/std/src/sys/unix/thread.rs:108:17
  26:     0x7fe547239ea7 - start_thread
                               at ./nptl/./nptl/pthread_create.c:477:8
  27:     0x7fe547015a2f - clone
                               at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
  28:                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-clippy/issues/new

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

query stack during panic:
end of query stack

[Centri3]

@rustbot label +I-ICE

can you give a playground link that reproduces this? or the code in question?

[giraffate]

Does this happen by using the latest nightly? It looks like that it's a duplicate of #10645.

[duelafn]

Ah, sorry, yes it is indeed fixed on nightly. No bugs to see here.

[giraffate]

No worry, thanks for the report!