Closed
Description
Code
use clippy::time::Instant;
fn main() {
let prev_instant = Instant::now();
let duration = prev_instant.elapsed();
}Meta
rustc --version --verbose:
rustc 1.70.0-nightly (5e1d3299a 2023-03-31)
binary: rustc
commit-hash: 5e1d3299a290026b85787bc9c7e72bcc53ac283f
commit-date: 2023-03-31
host: x86_64-unknown-linux-gnu
release: 1.70.0-nightly
LLVM version: 16.0.0
Error output
rustc --edition=2021 file.rs
--> treereduce.out:6:9
|
6 | let duration = prev_instant.elapsed();
| ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
|
= note: `#[warn(unused_variables)]` on by default
Backtrace
error: internal compiler error: compiler/rustc_passes/src/dead.rs:121:13: no type-dependent def for method
thread 'rustc' panicked at 'Box<dyn Any>', /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/compiler/rustc_errors/src/lib.rs:1644:9
stack backtrace:
0: 0x7f58a2365f8a - std::backtrace_rs::backtrace::libunwind::trace::h2f1b14d2b9e4c6b4
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7f58a2365f8a - std::backtrace_rs::backtrace::trace_unsynchronized::haf404d9184796f09
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f58a2365f8a - std::sys_common::backtrace::_print_fmt::h440840d8524e88f8
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7f58a2365f8a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h0d5b0c2d97b8992f
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f58a23ca05f - core::fmt::write::h63211a72e96d0d74
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/core/src/fmt/mod.rs:1254:17
5: 0x7f58a2358bc5 - std::io::Write::write_fmt::h83a6589baaeb8174
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/io/mod.rs:1698:15
6: 0x7f58a2365d55 - std::sys_common::backtrace::_print::h188e467357108441
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/sys_common/backtrace.rs:47:5
7: 0x7f58a2365d55 - std::sys_common::backtrace::print::ha9da41b42961a865
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/sys_common/backtrace.rs:34:9
8: 0x7f58a23689fe - std::panicking::default_hook::{{closure}}::h3fe2eceaaddaab65
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/panicking.rs:269:22
9: 0x7f58a23687a5 - std::panicking::default_hook::h0c19eee30e1bb21a
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/panicking.rs:288:9
10: 0x7f58a566b4d5 - <rustc_driver_impl[be27ae895c9c1abf]::DEFAULT_HOOK::{closure#0}::{closure#0} as core[633911572d8bda32]::ops::function::FnOnce<(&core[633911572d8bda32]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
11: 0x7f58a23691f4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hc01893d2c4f83c85
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/alloc/src/boxed.rs:1990:9
12: 0x7f58a23691f4 - std::panicking::rust_panic_with_hook::hce3464c8b95f72d6
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/panicking.rs:694:13
13: 0x7f58a5bb6851 - std[5eb8f1edb78db018]::panicking::begin_panic::<rustc_errors[3079177fcf76bb45]::ExplicitBug>::{closure#0}
14: 0x7f58a5bb1b06 - std[5eb8f1edb78db018]::sys_common::backtrace::__rust_end_short_backtrace::<std[5eb8f1edb78db018]::panicking::begin_panic<rustc_errors[3079177fcf76bb45]::ExplicitBug>::{closure#0}, !>
15: 0x7f58a5b7c416 - std[5eb8f1edb78db018]::panicking::begin_panic::<rustc_errors[3079177fcf76bb45]::ExplicitBug>
16: 0x7f58a5bd1d86 - <rustc_errors[3079177fcf76bb45]::HandlerInner>::bug::<&alloc[c199d475057be5e9]::string::String>
17: 0x7f58a5bd1a50 - <rustc_errors[3079177fcf76bb45]::Handler>::bug::<&alloc[c199d475057be5e9]::string::String>
18: 0x7f58a5bccbdb - rustc_middle[2e01d9c02d9244ae]::util::bug::opt_span_bug_fmt::<rustc_span[9d027ba2263b9410]::span_encoding::Span>::{closure#0}
19: 0x7f58a5bcc76a - rustc_middle[2e01d9c02d9244ae]::ty::context::tls::with_opt::<rustc_middle[2e01d9c02d9244ae]::util::bug::opt_span_bug_fmt<rustc_span[9d027ba2263b9410]::span_encoding::Span>::{closure#0}, !>::{closure#0}
20: 0x7f58a5bcc736 - rustc_middle[2e01d9c02d9244ae]::ty::context::tls::with_context_opt::<rustc_middle[2e01d9c02d9244ae]::ty::context::tls::with_opt<rustc_middle[2e01d9c02d9244ae]::util::bug::opt_span_bug_fmt<rustc_span[9d027ba2263b9410]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
21: 0x7f58a5bccb26 - rustc_middle[2e01d9c02d9244ae]::util::bug::opt_span_bug_fmt::<rustc_span[9d027ba2263b9410]::span_encoding::Span>
22: 0x7f58a38c6db3 - rustc_middle[2e01d9c02d9244ae]::util::bug::bug_fmt
23: 0x7f58a3d82f5f - <rustc_passes[771bc6febb390831]::dead::MarkSymbolVisitor as rustc_hir[d510e89e73515c9b]::intravisit::Visitor>::visit_expr
24: 0x7f58a3d824bd - <rustc_passes[771bc6febb390831]::dead::MarkSymbolVisitor as rustc_hir[d510e89e73515c9b]::intravisit::Visitor>::visit_expr
25: 0x7f58a3c9728b - rustc_hir[d510e89e73515c9b]::intravisit::walk_item::<rustc_passes[771bc6febb390831]::dead::MarkSymbolVisitor>
26: 0x7f58a3c91e90 - rustc_passes[771bc6febb390831]::dead::live_symbols_and_ignored_derived_traits
27: 0x7f58a4d921fb - <std[5eb8f1edb78db018]::thread::local::LocalKey<core[633911572d8bda32]::cell::Cell<*const ()>>>::with::<rustc_middle[2e01d9c02d9244ae]::ty::context::tls::enter_context<rustc_query_system[bcefc4dc53f73d2]::query::plumbing::execute_job_non_incr<rustc_query_impl[a11cf9e729a76afa]::queries::live_symbols_and_ignored_derived_traits, rustc_query_impl[a11cf9e729a76afa]::plumbing::QueryCtxt>::{closure#0}, &(rustc_data_structures[6ef3f1b9ef542b16]::unord::UnordSet<rustc_span[9d027ba2263b9410]::def_id::LocalDefId>, rustc_data_structures[6ef3f1b9ef542b16]::unord::UnordMap<rustc_span[9d027ba2263b9410]::def_id::LocalDefId, alloc[c199d475057be5e9]::vec::Vec<(rustc_span[9d027ba2263b9410]::def_id::DefId, rustc_span[9d027ba2263b9410]::def_id::DefId)>>)>::{closure#0}, &(rustc_data_structures[6ef3f1b9ef542b16]::unord::UnordSet<rustc_span[9d027ba2263b9410]::def_id::LocalDefId>, rustc_data_structures[6ef3f1b9ef542b16]::unord::UnordMap<rustc_span[9d027ba2263b9410]::def_id::LocalDefId, alloc[c199d475057be5e9]::vec::Vec<(rustc_span[9d027ba2263b9410]::def_id::DefId, rustc_span[9d027ba2263b9410]::def_id::DefId)>>)>
28: 0x7f58a4d91b9a - rustc_query_system[bcefc4dc53f73d2]::query::plumbing::try_execute_query::<rustc_query_impl[a11cf9e729a76afa]::queries::live_symbols_and_ignored_derived_traits, rustc_query_impl[a11cf9e729a76afa]::plumbing::QueryCtxt>
29: 0x7f58a4d91880 - <rustc_query_impl[a11cf9e729a76afa]::Queries as rustc_middle[2e01d9c02d9244ae]::ty::query::QueryEngine>::live_symbols_and_ignored_derived_traits
30: 0x7f58a47f5265 - rustc_passes[771bc6febb390831]::dead::check_mod_deathness
31: 0x7f58a4c50441 - rustc_query_system[bcefc4dc53f73d2]::query::plumbing::try_execute_query::<rustc_query_impl[a11cf9e729a76afa]::queries::check_mod_deathness, rustc_query_impl[a11cf9e729a76afa]::plumbing::QueryCtxt>
32: 0x7f58a4c50069 - <rustc_query_impl[a11cf9e729a76afa]::Queries as rustc_middle[2e01d9c02d9244ae]::ty::query::QueryEngine>::check_mod_deathness
33: 0x7f58a4c27447 - rustc_data_structures[6ef3f1b9ef542b16]::sync::par_for_each_in::<&[rustc_hir[d510e89e73515c9b]::hir_id::OwnerId], <rustc_middle[2e01d9c02d9244ae]::hir::map::Map>::par_for_each_module<rustc_interface[fa1cd19e003fbde7]::passes::analysis::{closure#6}::{closure#1}::{closure#1}::{closure#0}>::{closure#0}>
34: 0x7f58a4c27378 - <core[633911572d8bda32]::panic::unwind_safe::AssertUnwindSafe<rustc_interface[fa1cd19e003fbde7]::passes::analysis::{closure#6}::{closure#1}::{closure#1}> as core[633911572d8bda32]::ops::function::FnOnce<()>>::call_once
35: 0x7f58a4c74150 - <core[633911572d8bda32]::panic::unwind_safe::AssertUnwindSafe<rustc_interface[fa1cd19e003fbde7]::passes::analysis::{closure#6}::{closure#1}> as core[633911572d8bda32]::ops::function::FnOnce<()>>::call_once
36: 0x7f58a4a90e5e - <rustc_session[2115a9ee57a65798]::session::Session>::time::<(), rustc_interface[fa1cd19e003fbde7]::passes::analysis::{closure#6}>
37: 0x7f58a4a8f2d9 - rustc_interface[fa1cd19e003fbde7]::passes::analysis
38: 0x7f58a4e14bf2 - rustc_query_system[bcefc4dc53f73d2]::query::plumbing::try_execute_query::<rustc_query_impl[a11cf9e729a76afa]::queries::analysis, rustc_query_impl[a11cf9e729a76afa]::plumbing::QueryCtxt>
39: 0x7f58a4e148f0 - <rustc_query_impl[a11cf9e729a76afa]::Queries as rustc_middle[2e01d9c02d9244ae]::ty::query::QueryEngine>::analysis
40: 0x7f58a489654e - <rustc_interface[fa1cd19e003fbde7]::queries::QueryResult<&rustc_middle[2e01d9c02d9244ae]::ty::context::GlobalCtxt>>::enter::<core[633911572d8bda32]::result::Result<(), rustc_span[9d027ba2263b9410]::ErrorGuaranteed>, rustc_driver_impl[be27ae895c9c1abf]::run_compiler::{closure#1}::{closure#2}::{closure#4}>
41: 0x7f58a489502e - <rustc_interface[fa1cd19e003fbde7]::interface::Compiler>::enter::<rustc_driver_impl[be27ae895c9c1abf]::run_compiler::{closure#1}::{closure#2}, core[633911572d8bda32]::result::Result<core[633911572d8bda32]::option::Option<rustc_interface[fa1cd19e003fbde7]::queries::Linker>, rustc_span[9d027ba2263b9410]::ErrorGuaranteed>>
42: 0x7f58a48931e1 - rustc_span[9d027ba2263b9410]::set_source_map::<core[633911572d8bda32]::result::Result<(), rustc_span[9d027ba2263b9410]::ErrorGuaranteed>, rustc_interface[fa1cd19e003fbde7]::interface::run_compiler<core[633911572d8bda32]::result::Result<(), rustc_span[9d027ba2263b9410]::ErrorGuaranteed>, rustc_driver_impl[be27ae895c9c1abf]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
43: 0x7f58a489278f - std[5eb8f1edb78db018]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[fa1cd19e003fbde7]::util::run_in_thread_pool_with_globals<rustc_interface[fa1cd19e003fbde7]::interface::run_compiler<core[633911572d8bda32]::result::Result<(), rustc_span[9d027ba2263b9410]::ErrorGuaranteed>, rustc_driver_impl[be27ae895c9c1abf]::run_compiler::{closure#1}>::{closure#0}, core[633911572d8bda32]::result::Result<(), rustc_span[9d027ba2263b9410]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[633911572d8bda32]::result::Result<(), rustc_span[9d027ba2263b9410]::ErrorGuaranteed>>
44: 0x7f58a489216e - <<std[5eb8f1edb78db018]::thread::Builder>::spawn_unchecked_<rustc_interface[fa1cd19e003fbde7]::util::run_in_thread_pool_with_globals<rustc_interface[fa1cd19e003fbde7]::interface::run_compiler<core[633911572d8bda32]::result::Result<(), rustc_span[9d027ba2263b9410]::ErrorGuaranteed>, rustc_driver_impl[be27ae895c9c1abf]::run_compiler::{closure#1}>::{closure#0}, core[633911572d8bda32]::result::Result<(), rustc_span[9d027ba2263b9410]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[633911572d8bda32]::result::Result<(), rustc_span[9d027ba2263b9410]::ErrorGuaranteed>>::{closure#1} as core[633911572d8bda32]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
45: 0x7f58a23732d5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf8dc8be554bcb253
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/alloc/src/boxed.rs:1976:9
46: 0x7f58a23732d5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7ce91a4bb123291d
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/alloc/src/boxed.rs:1976:9
47: 0x7f58a23732d5 - std::sys::unix::thread::Thread::new::thread_start::h821bdfe2a1422348
at /rustc/5e1d3299a290026b85787bc9c7e72bcc53ac283f/library/std/src/sys/unix/thread.rs:108:17
48: 0x7f58a210dbb5 - <unknown>
49: 0x7f58a218fd90 - <unknown>
50: 0x0 - <unknown>
note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.70.0-nightly (5e1d3299a 2023-03-31) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [live_symbols_and_ignored_derived_traits] finding live symbols in crate
#1 [check_mod_deathness] checking deathness of variables in top-level module
#2 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error; 1 warning emitted