thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', compiler/rustc_metadata/src/rmeta/decoder.rs:1565:75

[haraldh]

Only happen rarely. We are building crates from within build.rs. Yeah, I know... but we are including the binary in the final binary.

Repo: https://github.com/enarx/enarx-keepldr/

Command:

$ cargo +nightly test --no-run --all-features

   Compiling shim-sev v0.1.0 (/home/harald/git/enarx/enarx-keepldr/internal/shim-sev)                                                                       
thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', compiler/rustc_metadata/src/rmeta/decoder.rs:1565:75
stack backtrace:
   0: rust_begin_unwind
             at /rustc/f0f68778f798d6d34649745b41770829b17ba5b8/library/std/src/panicking.rs:493:5
   1: core::panicking::panic_fmt
             at /rustc/f0f68778f798d6d34649745b41770829b17ba5b8/library/core/src/panicking.rs:92:14
   2: core::panicking::panic
             at /rustc/f0f68778f798d6d34649745b41770829b17ba5b8/library/core/src/panicking.rs:50:5
   3: core::lazy::OnceCell<T>::get_or_init
   4: rustc_metadata::rmeta::decoder::cstore_impl::<impl rustc_middle::middle::cstore::CrateStore for rustc_metadata::creader::CStore>::def_path_hash_to_def_id
   5: rustc_middle::ty::query::on_disk_cache::OnDiskCache::def_path_hash_to_def_id
   6: rustc_middle::ty::query::force_from_dep_node
   7: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
   8: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
   9: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  10: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  11: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  12: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  13: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  14: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  15: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  16: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  17: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  18: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  19: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  20: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  21: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  22: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
  23: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_green_and_read
  24: rustc_query_system::query::plumbing::ensure_query_impl
  25: rustc_session::utils::<impl rustc_session::session::Session>::time
  26: rustc_interface::passes::analysis
  27: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute
  28: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
  29: rustc_query_system::dep_graph::graph::DepGraph<K>::with_eval_always_task
  30: rustc_data_structures::stack::ensure_sufficient_stack
  31: rustc_query_system::query::plumbing::get_query_impl
  32: rustc_interface::passes::QueryContext::enter
  33: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  34: rustc_span::with_source_map
  35: rustc_interface::interface::create_compiler_and_run
  36: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.50.0-nightly (f0f68778f 2020-12-09) running on x86_64-unknown-linux-gnu

note: compiler flags: -C panic=abort -C embed-bitcode=no -C debuginfo=2 -C incremental -C relocation-model=pic -C link-args=-Wl,--sort-section=alignment -nostartfiles -C link-self-contained=no -C force-frame-pointers=yes --crate-type bin

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [analysis] running analysis passes on this crate
end of query stack

[Aaron1011]

This should be fixed in the latest nightly

[Aaron1011]

I'm going to close this - the backtrace is identical to other issues that have been fixed (e.g. #79661), and some of the relevant code was rewritten in #80177. If this re-occurs, feel free to reopen the issue.