Unexpected panic in compiler/rustc_hir/src/definitions.rs

[yannham]

I got a an unexpected panic when running cargo build on a project using the latest stable version of Rust 1.58.1.

Code

I don't have time right nor a good lead for minimizing the code example for now, but may try to do so later. Sorry about that. For the time being, the offending commit is b13930e1f948b2773f1049fc4724e45306f6f175 on tweag/nickel. The error is triggered by a cargo build at the root of the project.

Meta

rustc --version --verbose:

rustc 1.58.1 (db9d1b20b 2022-01-20)
binary: rustc
commit-hash: db9d1b20bba1968c1ec1fc49616d4742c1725b4b
commit-date: 2022-01-20
host: x86_64-unknown-linux-gnu
release: 1.58.1
LLVM version: 13.0.0

Error output

thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/compiler/rustc_hir/src/definitions.rs:452:14

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 1.58.1 (db9d1b20b 2022-01-20) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type lib

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

Backtrace

stack backtrace:
   0:     0x7f0e88e41e8c - std::backtrace_rs::backtrace::libunwind::trace::h09f7e4e089375279
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f0e88e41e8c - std::backtrace_rs::backtrace::trace_unsynchronized::h1ec96f1c7087094e
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f0e88e41e8c - std::sys_common::backtrace::_print_fmt::h317b71fc9a5cf964
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x7f0e88e41e8c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he3555b48e7dfe7f0
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/sys_common/backtrace.rs:46:22
   4:     0x7f0e88e9f55c - core::fmt::write::h513b07ca38f4fb1b
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/core/src/fmt/mod.rs:1149:17
   5:     0x7f0e88e320d5 - std::io::Write::write_fmt::haf8c932b52111354
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/io/mod.rs:1697:15
   6:     0x7f0e88e44f30 - std::sys_common::backtrace::_print::h195c38364780a303
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/sys_common/backtrace.rs:49:5
   7:     0x7f0e88e44f30 - std::sys_common::backtrace::print::hc09dfdea923b6730
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/sys_common/backtrace.rs:36:9
   8:     0x7f0e88e44f30 - std::panicking::default_hook::{{closure}}::hb2e38ec0d91046a3
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/panicking.rs:211:50
   9:     0x7f0e88e44ae5 - std::panicking::default_hook::h60284635b0ad54a8
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/panicking.rs:228:9
  10:     0x7f0e895eeaa1 - rustc_driver[6ad7101a8fabd86e]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f0e81752193 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h863e64465650e049
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/alloc/src/boxed.rs:1708:9
  12:     0x7f0e817cf5dd - proc_macro::bridge::client::<impl proc_macro::bridge::Bridge>::enter::{{closure}}::{{closure}}::hf3c41c0ce1a83fe5
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/proc_macro/src/bridge/client.rs:320:21
  13:     0x7f0e88e45749 - std::panicking::rust_panic_with_hook::ha677a669fb275654
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/panicking.rs:610:17
  14:     0x7f0e88e451d2 - std::panicking::begin_panic_handler::{{closure}}::h976246fb95d93c31
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/panicking.rs:500:13
  15:     0x7f0e88e42334 - std::sys_common::backtrace::__rust_end_short_backtrace::h38077ee5b7b9f99a
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/sys_common/backtrace.rs:139:18
  16:     0x7f0e88e45169 - rust_begin_unwind
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/panicking.rs:498:5
  17:     0x7f0e88e094b1 - core::panicking::panic_fmt::h35f3a62252ba0fd2
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/core/src/panicking.rs:107:14
  18:     0x7f0e88e093fd - core::panicking::panic::h86fc01e270142a61
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/core/src/panicking.rs:48:5
  19:     0x7f0e8b0d693e - <rustc_middle[26370726012d1bf2]::ty::context::TyCtxt>::def_path_hash_to_def_id
  20:     0x7f0e8b111182 - <rustc_query_system[3616b1a045b1904c]::dep_graph::dep_node::DepNode<rustc_middle[26370726012d1bf2]::dep_graph::dep_node::DepKind> as rustc_middle[26370726012d1bf2]::dep_graph::dep_node::DepNodeExt>::extract_def_id
  21:     0x7f0e8b7be19e - rustc_query_impl[4fd9530611cf4d08]::query_callbacks::hir_owner::force_from_dep_node
  22:     0x7f0e8baea801 - <rustc_middle[26370726012d1bf2]::ty::context::TyCtxt as rustc_query_system[3616b1a045b1904c]::dep_graph::DepContext>::try_force_from_dep_node
  23:     0x7f0e8add7e2c - <rustc_query_system[3616b1a045b1904c]::dep_graph::graph::DepGraph<rustc_middle[26370726012d1bf2]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt>
  24:     0x7f0e8add7dfd - <rustc_query_system[3616b1a045b1904c]::dep_graph::graph::DepGraph<rustc_middle[26370726012d1bf2]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt>
  25:     0x7f0e8add7dfd - <rustc_query_system[3616b1a045b1904c]::dep_graph::graph::DepGraph<rustc_middle[26370726012d1bf2]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt>
  26:     0x7f0e8add7dfd - <rustc_query_system[3616b1a045b1904c]::dep_graph::graph::DepGraph<rustc_middle[26370726012d1bf2]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt>
  27:     0x7f0e8add7dfd - <rustc_query_system[3616b1a045b1904c]::dep_graph::graph::DepGraph<rustc_middle[26370726012d1bf2]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt>
  28:     0x7f0e8add7dfd - <rustc_query_system[3616b1a045b1904c]::dep_graph::graph::DepGraph<rustc_middle[26370726012d1bf2]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt>
  29:     0x7f0e8ad2ec19 - rustc_query_system[3616b1a045b1904c]::query::plumbing::ensure_must_run::<rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt, rustc_span[c29ad455a793da3]::def_id::LocalDefId, &rustc_middle[26370726012d1bf2]::ty::context::TypeckResults>
  30:     0x7f0e8ad76c18 - rustc_query_system[3616b1a045b1904c]::query::plumbing::get_query::<rustc_query_impl[4fd9530611cf4d08]::queries::mir_borrowck, rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt>
  31:     0x7f0e8a8356ed - <rustc_middle[26370726012d1bf2]::hir::map::Map>::par_body_owners::<rustc_interface[2c1d684caca70d53]::passes::analysis::{closure#2}::{closure#0}>
  32:     0x7f0e8b1c494a - rustc_interface[2c1d684caca70d53]::passes::analysis
  33:     0x7f0e8b7f6bb0 - <rustc_query_system[3616b1a045b1904c]::dep_graph::graph::DepGraph<rustc_middle[26370726012d1bf2]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[26370726012d1bf2]::ty::context::TyCtxt, (), core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>
  34:     0x7f0e8b75abd3 - rustc_data_structures[a6a643d2c4658522]::stack::ensure_sufficient_stack::<(core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>, rustc_query_system[3616b1a045b1904c]::dep_graph::graph::DepNodeIndex), rustc_query_system[3616b1a045b1904c]::query::plumbing::execute_job<rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt, (), core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>::{closure#3}>
  35:     0x7f0e8b6c579c - rustc_query_system[3616b1a045b1904c]::query::plumbing::try_execute_query::<rustc_query_impl[4fd9530611cf4d08]::plumbing::QueryCtxt, rustc_query_system[3616b1a045b1904c]::query::caches::DefaultCache<(), core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>>
  36:     0x7f0e8b773265 - <rustc_query_impl[4fd9530611cf4d08]::Queries as rustc_middle[26370726012d1bf2]::ty::query::QueryEngine>::analysis
  37:     0x7f0e8b1b8699 - <rustc_interface[2c1d684caca70d53]::passes::QueryContext>::enter::<rustc_driver[6ad7101a8fabd86e]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>
  38:     0x7f0e8b18ffd7 - <rustc_interface[2c1d684caca70d53]::interface::Compiler>::enter::<rustc_driver[6ad7101a8fabd86e]::run_compiler::{closure#1}::{closure#2}, core[7435606f1c80df2a]::result::Result<core[7435606f1c80df2a]::option::Option<rustc_interface[2c1d684caca70d53]::queries::Linker>, rustc_errors[5befc41d352b3f14]::ErrorReported>>
  39:     0x7f0e8b18bed4 - rustc_span[c29ad455a793da3]::with_source_map::<core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>, rustc_interface[2c1d684caca70d53]::interface::create_compiler_and_run<core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>, rustc_driver[6ad7101a8fabd86e]::run_compiler::{closure#1}>::{closure#1}>
  40:     0x7f0e8b190e2f - <scoped_tls[66f88778b59ce329]::ScopedKey<rustc_span[c29ad455a793da3]::SessionGlobals>>::set::<rustc_interface[2c1d684caca70d53]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[2c1d684caca70d53]::interface::run_compiler<core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>, rustc_driver[6ad7101a8fabd86e]::run_compiler::{closure#1}>::{closure#0}, core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>::{closure#0}::{closure#0}, core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>
  41:     0x7f0e8b18ef65 - std[b2a2bae5f6ca25d7]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[2c1d684caca70d53]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[2c1d684caca70d53]::interface::run_compiler<core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>, rustc_driver[6ad7101a8fabd86e]::run_compiler::{closure#1}>::{closure#0}, core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>::{closure#0}, core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>
  42:     0x7f0e8b1b915a - <<std[b2a2bae5f6ca25d7]::thread::Builder>::spawn_unchecked<rustc_interface[2c1d684caca70d53]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[2c1d684caca70d53]::interface::run_compiler<core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>, rustc_driver[6ad7101a8fabd86e]::run_compiler::{closure#1}>::{closure#0}, core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>::{closure#0}, core[7435606f1c80df2a]::result::Result<(), rustc_errors[5befc41d352b3f14]::ErrorReported>>::{closure#1} as core[7435606f1c80df2a]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  43:     0x7f0e88e50fc3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hcbc6d2d80772be64
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/alloc/src/boxed.rs:1694:9
  44:     0x7f0e88e50fc3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9bffa2ca65a1d6e6
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/alloc/src/boxed.rs:1694:9
  45:     0x7f0e88e50fc3 - std::sys::unix::thread::Thread::new::thread_start::ha678a8b0caec8f55
                               at /rustc/db9d1b20bba1968c1ec1fc49616d4742c1725b4b/library/std/src/sys/unix/thread.rs:106:17
  46:     0x7f0e88d68d80 - start_thread
                               at ./nptl/./nptl/pthread_create.c:481:8
  47:     0x7f0e88c7fbdf - __GI___clone
                               at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
  48:                0x0 - <unknown>

[yannham]

After some more research, it is a possible duplicate of #93125, #93096, #93020 and #93013. Feel free to close if it is. a cargo clean did fix it, and the bug is not triggered on the CI (although the CI is using Nix, so a possibly different version of stable rustc).

[hkratz]

@rustbot label A-incr-comp