Closed
Description
When compiling code on an aarch64 system (a pine a64) I get a compiler panic 'specified instant was less than self', which I'm guessing is because the accuracy of the timer given on this system isn't very reliable and the std::time::Instant guarantee that a new one won't be earlier than an old one isn't upheld. This problem occurs somewhat reliably. Usually several crates will compile successfully in a long compile job before a panic happens. This problem has been happening to me since around 1.26 nightly.
Here's a backtrace I get
thread 'main' panicked at 'specified instant was later than self', libstd/sys/unix/time.rs:292:17
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
at libstd/sys_common/backtrace.rs:59
2: std::panicking::default_hook::{{closure}}
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::begin_panic
at libstd/panicking.rs:410
7: std::sys::unix::time::inner::Instant::sub_instant::{{closure}}
at libstd/sys/unix/time.rs:292
8: std::time::Instant::elapsed
at libcore/result.rs:774
at libstd/sys/unix/time.rs:291
at libstd/time.rs:185
at libstd/time.rs:250
at libstd/time.rs:209
9: rustc::util::profiling::SelfProfiler::start_activity
10: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::ensure_query
11: rustc::ty::util::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::calculate_dtor
12: rustc_typeck::check::adt_destructor
13: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::adt_destructor<'tcx>>::compute
14: rustc::dep_graph::graph::DepGraph::with_task_impl
15: <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start
16: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
17: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
18: rustc_typeck::check::check_item_type
19: rustc::hir::Crate::visit_all_item_likes
20: rustc_typeck::check::check_item_types
21: rustc::util::common::time
22: rustc_typeck::check_crate
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: <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
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
query stack during panic:
#0 [adt_destructor] processing `de::impls::PathVisitor`
end of query stack
When I first tried compiling with -j 1 I instantly got the same panic plus a BorrowMutError, shown next:
thread 'main' panicked at 'specified instant was later than self', libstd/sys/unix/time.rs:292:17
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
at libstd/sys_common/backtrace.rs:59
2: std::panicking::default_hook::{{closure}}
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::begin_panic
at libstd/panicking.rs:410
7: std::sys::unix::time::inner::Instant::sub_instant::{{closure}}
at libstd/sys/unix/time.rs:292
8: std::time::Instant::elapsed
at libcore/result.rs:774
at libstd/sys/unix/time.rs:291
at libstd/time.rs:185
at libstd/time.rs:250
at libstd/time.rs:209
9: rustc::util::profiling::SelfProfiler::start_activity
10: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
11: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
12: rustc::traits::specialize::specialization_graph::Children::insert_blindly
13: rustc::traits::specialize::specialization_graph_provider
14: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::specialization_graph_of<'tcx>>::compute
15: rustc::dep_graph::graph::DepGraph::with_task_impl
16: <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start
17: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
18: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
19: rustc::traits::specialize::find_associated_item
20: rustc::ty::instance::Instance::resolve
21: rustc_mir::monomorphize::collector::visit_fn_use
22: <rustc_mir::monomorphize::collector::MirNeighborCollector<'a, 'tcx> as rustc::mir::visit::Visitor<'tcx>>::visit_terminator_kind
23: rustc_mir::monomorphize::collector::collect_items_rec
24: rustc_mir::monomorphize::collector::collect_items_rec
25: rustc_mir::monomorphize::collector::collect_items_rec
26: rustc_mir::monomorphize::collector::collect_items_rec
27: rustc_mir::monomorphize::collector::collect_items_rec
28: rustc_mir::monomorphize::collector::collect_items_rec
29: rustc_mir::monomorphize::collector::collect_items_rec
30: rustc_mir::monomorphize::collector::collect_items_rec
31: rustc_mir::monomorphize::collector::collect_items_rec
32: rustc_mir::monomorphize::collector::collect_items_rec
33: rustc_mir::monomorphize::collector::collect_items_rec
34: rustc_mir::monomorphize::collector::collect_items_rec
35: rustc_mir::monomorphize::collector::collect_items_rec
36: rustc_mir::monomorphize::collector::collect_items_rec
37: rustc_mir::monomorphize::collector::collect_crate_mono_items::{{closure}}
38: rustc_mir::monomorphize::collector::collect_crate_mono_items
39: rustc::util::common::time
40: rustc_codegen_llvm::base::collect_and_partition_mono_items
41: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::collect_and_partition_mono_items<'tcx>>::compute
42: rustc::dep_graph::graph::DepGraph::with_task_impl
43: <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start
44: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
45: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
46: rustc_codegen_llvm::back::symbol_export::exported_symbols_provider_local
47: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::exported_symbols<'tcx>>::compute
48: rustc::dep_graph::graph::DepGraph::with_task_impl
49: <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start
50: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
51: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
52: rustc_metadata::encoder::encode_metadata
53: rustc_codegen_llvm::base::write_metadata
54: rustc::util::common::time
55: rustc_codegen_llvm::base::codegen_crate
56: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_utils::codegen_backend::CodegenBackend>::codegen_crate
57: rustc::util::common::time
58: rustc_driver::driver::phase_4_codegen
59: rustc_driver::driver::compile_input::{{closure}}
60: rustc::ty::context::tls::enter_context
61: <std::thread::local::LocalKey<T>>::with
62: rustc::ty::context::TyCtxt::create_and_enter
63: rustc_driver::driver::compile_input
64: rustc_driver::run_compiler_with_pool
65: rustc_driver::driver::spawn_thread_pool
66: rustc_driver::run_compiler
67: <scoped_tls::ScopedKey<T>>::set
68: <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
69: __rust_maybe_catch_panic
at libpanic_unwind/lib.rs:102
70: rustc_driver::run
71: rustc_driver::main
72: std::rt::lang_start::{{closure}}
73: std::panicking::try::do_call
at libstd/rt.rs:59
at libstd/panicking.rs:310
74: __rust_maybe_catch_panic
at libpanic_unwind/lib.rs:102
75: std::rt::lang_start_internal
at libstd/panicking.rs:289
at libstd/panic.rs:392
at libstd/rt.rs:58
76: main
77: __libc_start_main
query stack during panic:
thread 'main' panicked at 'already borrowed: BorrowMutError', libcore/result.rs:1009:5
stack backtrace:
0: 0x7fa19be11b - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h4d215aadcaa52ebe
at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
1: 0x7fa19a7737 - std::sys_common::backtrace::print::h82720234d7357f67
at libstd/sys_common/backtrace.rs:71
at libstd/sys_common/backtrace.rs:59
2: 0x7fa1999c1f - std::panicking::default_hook::{{closure}}::h1cc6e7f2777dc182
at libstd/panicking.rs:211
3: 0x7fa19999d7 - std::panicking::default_hook::hcfca097092607890
at libstd/panicking.rs:227
4: 0x7fa040ec77 - rustc::util::common::panic_hook::h306b1084c22d63a7
5: 0x7fa199a34b - std::panicking::rust_panic_with_hook::hb4c40b3721cfbfb0
at libstd/panicking.rs:480
6: 0x7fa1999f57 - std::panicking::continue_panic_fmt::h7e84a0a182ce9c2d
at libstd/panicking.rs:390
7: 0x7fa1999e63 - rust_begin_unwind
at libstd/panicking.rs:325
8: 0x7fa19da90b - core::panicking::panic_fmt::h0c93626b89c38af6
at libcore/panicking.rs:77
9: 0x7fa039f93f - core::result::unwrap_failed::h0f2804ccdceb1057
10: 0x7fa028eb93 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query::haa28e0723665833b
11: 0x7fa01b7cd7 - rustc::ty::item_path::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::push_item_path::hf208625ff68cfb69
12: 0x7fa04ed63b - <M as rustc::ty::query::config::QueryDescription<'tcx>>::describe::h89c6f088ab3a41ca
13: 0x7fa041bb27 - rustc::ty::query::Query::describe::h329b8f02606e812d
14: 0x7fa012152f - rustc::ty::context::tls::with_context_opt::h2126d91cee343ea8
15: 0x7fa040ed03 - rustc::util::common::panic_hook::h306b1084c22d63a7
16: 0x7fa199a34b - std::panicking::rust_panic_with_hook::hb4c40b3721cfbfb0
at libstd/panicking.rs:480
17: 0x7fa199a163 - std::panicking::begin_panic::h795f8aed5d383695
at libstd/panicking.rs:410
18: 0x7fa199337b - std::sys::unix::time::inner::Instant::sub_instant::{{closure}}::h18563395bbed46b0
at libstd/sys/unix/time.rs:292
19: 0x7fa19a6ebb - std::time::Instant::elapsed::h5d7a80e72662292b
at libcore/result.rs:774
at libstd/sys/unix/time.rs:291
at libstd/time.rs:185
at libstd/time.rs:250
at libstd/time.rs:209
20: 0x7f9ffe1677 - rustc::util::profiling::SelfProfiler::start_activity::h986ad6359f81d55a
21: 0x7fa01d6cb7 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job::hc4af5870698c60ab
22: 0x7fa0269933 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query::h6f683a66c5cd04fc
23: 0x7f9ff82c1b - rustc::traits::specialize::specialization_graph::Children::insert_blindly::ha890e94c48b0285e
24: 0x7f9ffcec8f - rustc::traits::specialize::specialization_graph_provider::hd7f0b5a2ff57c920
25: 0x7fa01a34e7 - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::specialization_graph_of<'tcx>>::compute::h55791f060255075c
26: 0x7f9ff4f86b - rustc::dep_graph::graph::DepGraph::with_task_impl::h992bebda7ff9cd47
27: 0x7fa00e3753 - <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start::h7d7a156d9f36ae7c
28: 0x7fa01c226b - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job::h47db5b7f6268c68d
29: 0x7fa0248b1f - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query::h460854c56198ad02
30: 0x7f9ffcd8f3 - rustc::traits::specialize::find_associated_item::hdcb76f43f4e084c9
31: 0x7f9ffdfeaf - rustc::ty::instance::Instance::resolve::hcf7331f6719090cf
32: 0x7fa0a29e93 - rustc_mir::monomorphize::collector::visit_fn_use::h0b7ff6013ac91264
33: 0x7fa0a29a47 - <rustc_mir::monomorphize::collector::MirNeighborCollector<'a, 'tcx> as rustc::mir::visit::Visitor<'tcx>>::visit_terminator_kind::h273825cee5b9efef
34: 0x7fa0a28733 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
35: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
36: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
37: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
38: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
39: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
40: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
41: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
42: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
43: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
44: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
45: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
46: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
47: 0x7fa0a28bf3 - rustc_mir::monomorphize::collector::collect_items_rec::h3640dedea6ef9cd7
48: 0x7fa0a27beb - rustc_mir::monomorphize::collector::collect_crate_mono_items::{{closure}}::ha18316921a9b2907
49: 0x7fa0a27027 - rustc_mir::monomorphize::collector::collect_crate_mono_items::h4032ae4d8b75f166
50: 0x7f9c8a8cbb - rustc::util::common::time::h8666e011e51fe9e5
51: 0x7f9c92d283 - rustc_codegen_llvm::base::collect_and_partition_mono_items::h89d01ebc8f4a3923
52: 0x7fa01a3f2b - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::collect_and_partition_mono_items<'tcx>>::compute::heb56783bba3b818d
53: 0x7f9ff5aa2b - rustc::dep_graph::graph::DepGraph::with_task_impl::hc7a605db5928df4b
54: 0x7fa00cb96b - <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start::h3aca894fac9418e0
55: 0x7fa01bfb87 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job::h2ef87316503525e3
56: 0x7fa02685d3 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query::h6ef566902fcecd63
57: 0x7f9c975fbf - rustc_codegen_llvm::back::symbol_export::exported_symbols_provider_local::h303bba7f92d3a4af
58: 0x7fa01a3f07 - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::exported_symbols<'tcx>>::compute::h022e11021971ef4b
59: 0x7f9ff6a563 - rustc::dep_graph::graph::DepGraph::with_task_impl::hfd5ef0a8a156fdd0
60: 0x7fa00ff177 - <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start::hcc8cf0c3a9318e29
61: 0x7fa01cf38f - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job::h8fb67b1f85c56b70
62: 0x7fa02458c3 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query::h3ea93f0537b81797
63: 0x7fa0fcd827 - rustc_metadata::encoder::encode_metadata::h3974ec048e66b56c
64: 0x7f9c92aeb7 - rustc_codegen_llvm::base::write_metadata::ha006227f86f20551
65: 0x7f9c8a883f - rustc::util::common::time::h46b0a789d4fd44de
66: 0x7f9c92b57b - rustc_codegen_llvm::base::codegen_crate::h4f47006aaff274ca
67: 0x7f9c97b50f - <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_utils::codegen_backend::CodegenBackend>::codegen_crate::h1b5e0a36777f0f8c
68: 0x7fa1b064a3 - rustc::util::common::time::ha03eb7179adf5641
69: 0x7fa1afa8a7 - rustc_driver::driver::phase_4_codegen::h986e03d93b5cf4ce
70: 0x7fa1ad1adf - rustc_driver::driver::compile_input::{{closure}}::hf98165e0c1a4801e
71: 0x7fa1abb253 - rustc::ty::context::tls::enter_context::hf5a4819238d513a2
72: 0x7fa1b3c2b3 - <std::thread::local::LocalKey<T>>::with::h93386544071cc3f1
73: 0x7fa1b80e43 - rustc::ty::context::TyCtxt::create_and_enter::h93142bd23c49dd05
74: 0x7fa1af4b8b - rustc_driver::driver::compile_input::hca1fa21f74ba205b
75: 0x7fa1b9afef - rustc_driver::run_compiler_with_pool::ha0c892e478210d0a
76: 0x7fa1af31c7 - rustc_driver::driver::spawn_thread_pool::hbbcb33985c15d20b
77: 0x7fa1b9a3c3 - rustc_driver::run_compiler::hdb819c346db8c5be
78: 0x7fa1adff9b - <scoped_tls::ScopedKey<T>>::set::h6fcbf427d45c73d6
79: 0x7fa1ad4d57 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hf3c2e500cf26088e
80: 0x7fa19cd4db - __rust_maybe_catch_panic
at libpanic_unwind/lib.rs:102
81: 0x7fa1b98d2f - rustc_driver::run::ha33a97a6629d40ce
82: 0x7fa1ba364f - rustc_driver::main::hf36dd058a5421ad9
83: 0x558499bc27 - std::rt::lang_start::{{closure}}::h2c591498ace73137
84: 0x7fa1999dc7 - std::panicking::try::do_call::he4712eb84191fb3b
at libstd/rt.rs:59
at libstd/panicking.rs:310
85: 0x7fa19cd4db - __rust_maybe_catch_panic
at libpanic_unwind/lib.rs:102
86: 0x7fa198fd07 - std::rt::lang_start_internal::h76f990c2b2c74932
at libstd/panicking.rs:289
at libstd/panic.rs:392
at libstd/rt.rs:58
87: 0x558499bc83 - main
88: 0x7fa180ed87 - __libc_start_main
query stack during panic:
thread panicked while processing panic. aborting.
error: Could not compile `semver-parser`.
Strangely though, the next time I tried compiling with -j 1, it compiled fine. I'm pretty confused about this, and I guess I should really be cross compiling but it was much easier to just compile on the target than figure out how to cross compile openssl and stuff.
rustc 1.31.0 (abe02ce 2018-12-04)
binary: rustc
commit-hash: abe02ce
commit-date: 2018-12-04
host: aarch64-unknown-linux-gnu
release: 1.31.0
LLVM version: 8.0