rustc panic during cargo check

[aruediger]

I ran cargo check on a rather large workspace which crashed. After running cargo clean it worked again.

Code

can't share/minimize

Meta

rustc --version --verbose:

rustc 1.46.0 (04488afe3 2020-08-24)
binary: rustc
commit-hash: 04488afe34512aa4c33566eb16d8c912a3ae04f9
commit-date: 2020-08-24
host: x86_64-apple-darwin
release: 1.46.0
LLVM version: 10.0

Error output

thread 'rustc' panicked at 'index out of bounds: the len is 201074 but the index is 4303669', /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/librustc_query_system/dep_graph/graph.rs:1110:15

Backtrace

   0:        0x116bd251e - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h24bb64d98a7e25d6
   1:        0x116c0af5c - core::fmt::write::h8fdc9cddb01cd8b2
   2:        0x116bc3659 - std::io::Write::write_fmt::hcc3030013983bab6
   3:        0x116bd6f45 - std::panicking::default_hook::{{closure}}::h95817712c5ff0736
   4:        0x116bd6c82 - std::panicking::default_hook::h34e085f4e0b1062d
   5:        0x10fc0e2a8 - rustc_driver::report_ice::hfdd22d24e7049cd8
   6:        0x116bd75fd - std::panicking::rust_panic_with_hook::haf571858f996ac45
   7:        0x116bd71a2 - rust_begin_unwind
   8:        0x116c2e21f - core::panicking::panic_fmt::h11676ba6a846d9f4
   9:        0x116c2e1e6 - core::panicking::panic_bounds_check::hcf74fad13e3ef2bb
  10:        0x11222b8b4 - rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green::h362db272e8b1d1bc
  11:        0x11222b695 - rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green::h362db272e8b1d1bc
  12:        0x11222b695 - rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green::h362db272e8b1d1bc
  13:        0x11222b695 - rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green::h362db272e8b1d1bc
  14:        0x11222b695 - rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green::h362db272e8b1d1bc
  15:        0x11222b3ce - rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_green_and_read::h28f8bbf620e97fac
  16:        0x1121d4966 - rustc_query_system::query::plumbing::ensure_query_impl::hcbfedf4515bc8619
  17:        0x1120bf954 - rustc_typeck::check::typeck_item_bodies::he8b96cfdeeb56be3
  18:        0x1122f1cc5 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::typeck_item_bodies>::compute::h23f57413802f3312
  19:        0x11213903a - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::ha1018702ca70e213
  20:        0x112227504 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::haae931d56e91db0d
  21:        0x1122318a0 - rustc_data_structures::stack::ensure_sufficient_stack::hd4465b1a8c425fc1
  22:        0x1121bb5b3 - rustc_query_system::query::plumbing::get_query_impl::hbe887bcc811887c5
  23:        0x11226a564 - rustc_typeck::check_crate::h38efe851004fd758
  24:        0x10fd5d3e8 - rustc_interface::passes::analysis::ha9bb7a4b24796f8b
  25:        0x10fbf7b6a - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute::h78420953c1685a80
  26:        0x10fbf9194 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::h32382a451221245f
  27:        0x10fc58064 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::hd831873ea1cb9bd1
  28:        0x10fbd665d - rustc_query_system::query::plumbing::get_query_impl::h9034f3536f8e7867
  29:        0x10fbf8415 - rustc_middle::ty::context::tls::enter_global::he93ce98e5ebc4597
  30:        0x10fbcc869 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::h0012ae73340d6403
  31:        0x10fc5668e - rustc_span::with_source_map::h0844cc4c4f7b7613
  32:        0x10fbcd92a - rustc_interface::interface::create_compiler_and_run::h483a0c43939b3f88
  33:        0x10fbf5839 - scoped_tls::ScopedKey<T>::set::h37546a7eac193ee1
  34:        0x10fc17d97 - std::sys_common::backtrace::__rust_begin_short_backtrace::habd480e85cc2cc75
  35:        0x10fbda5fc - core::ops::function::FnOnce::call_once{{vtable.shim}}::h292fd0e0bfb32d51
  36:        0x116be4b9d - std::sys::unix::thread::Thread::new::thread_start::hf8a0ec6cfa81ff3d
  37:     0x7fff6b01c2eb - AssociationsManager::_map
  38:     0x7fff6b01f249 - AssociationsManager::_map

[jyn514]

@2Beaucoup could you link the original repository that had the bug? Even if you don't have an MCVE, someone else might be able to come up with one.

[pnkfelix]

Just to expand on @jyn514 's previous comment: This is not actionable as written, and is likely to be closed as unactionable the next time someone visits it as part of bug triage (perhaps after being grouped with other similar bugs that may have related root causes based on their stack traces).

[camelid]

I'm going to close this: like pnkfelix said, this is not actionable. If someone runs into this and can share the code or minimized code, then we can fix it, but there's not really any way to know what the problem is here.