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@nikomatsakis
Created November 2, 2018 08:49
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warning: field is never used: `private`
--> /home/nmatsakis/tmp/foo.rs:6:5
|
6 | private: std::num::NonZeroU32,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: #[warn(dead_code)] on by default
warning: function is never used: `main`
--> /home/nmatsakis/tmp/foo.rs:36:1
|
36 | fn main() { }
| ^^^^^^^^^
thread 'main' panicked at 'assertion failed: `(left == right)`
left: `18446744073709551615`,
right: `340282366920938463463374607431768211455`', librustc_codegen_llvm/debuginfo/metadata.rs:1367:29
stack backtrace:
0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
1: std::sys_common::backtrace::_print
at libstd/sys_common/backtrace.rs:71
2: std::panicking::default_hook::{{closure}}
at libstd/sys_common/backtrace.rs:59
at libstd/panicking.rs:211
3: std::panicking::default_hook
at libstd/panicking.rs:227
4: rustc::util::common::panic_hook
5: std::panicking::rust_panic_with_hook
at libstd/panicking.rs:480
6: std::panicking::continue_panic_fmt
at libstd/panicking.rs:390
7: std::panicking::begin_panic_fmt
at libstd/panicking.rs:345
8: <core::iter::Map<I, F> as core::iter::iterator::Iterator>::fold
9: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T, I>>::from_iter
10: rustc_codegen_llvm::debuginfo::metadata::MemberDescriptionFactory::create_member_descriptions
11: rustc_codegen_llvm::debuginfo::metadata::RecursiveTypeDescription::finalize
12: rustc_codegen_llvm::debuginfo::metadata::type_metadata
13: rustc_codegen_llvm::mir::codegen_mir
14: rustc_codegen_llvm::base::codegen_instance
15: rustc_codegen_llvm::mono_item::MonoItemExt::define
16: rustc_codegen_llvm::base::compile_codegen_unit::module_codegen
17: rustc::dep_graph::graph::DepGraph::with_task
18: rustc_codegen_llvm::base::codegen_crate
19: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_utils::codegen_backend::CodegenBackend>::codegen_crate
20: rustc::util::common::time
21: rustc_driver::driver::phase_4_codegen
22: rustc_driver::driver::compile_input::{{closure}}
23: rustc::ty::context::tls::enter_context
24: <std::thread::local::LocalKey<T>>::with
25: rustc::ty::context::TyCtxt::create_and_enter
26: rustc_driver::driver::compile_input
27: rustc_driver::run_compiler_with_pool
28: rustc_driver::driver::spawn_thread_pool
29: rustc_driver::run_compiler
30: <scoped_tls::ScopedKey<T>>::set
31: syntax::with_globals
32: __rust_maybe_catch_panic
at libpanic_unwind/lib.rs:102
33: rustc_driver::run
34: rustc_driver::main
35: std::rt::lang_start::{{closure}}
36: std::panicking::try::do_call
at libstd/rt.rs:59
at libstd/panicking.rs:310
37: __rust_maybe_catch_panic
at libpanic_unwind/lib.rs:102
38: std::rt::lang_start_internal
at libstd/panicking.rs:289
at libstd/panic.rs:392
at libstd/rt.rs:58
39: main
40: __libc_start_main
at ../csu/libc-start.c:308
41: <unknown>
query stack during panic:
end of query stack
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 1.31.0-nightly (de9666f12 2018-10-31) running on x86_64-unknown-linux-gnu
note: compiler flags: -C debuginfo=2 --crate-type lib
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