Error emitted for compiling tests

[Laura7089]

I get a compiler panic when compiling the tests for Advent of Code solution.
cargo test emits the below error; nightly and beta don't.

Code

src/lib.rs:

#[macro_use]
extern crate aoc_runner_derive;
mod day1;

aoc_lib! { year = 2022 }

src/day1.rs:

#[aoc(day1, part1)]
fn solve_part1(input: &str) -> u32 {
    input
        .split("\n\n")
        .map(|elf| elf.split('\n').map(|c| c.parse::<u32>().unwrap()).sum())
        .max()
        .unwrap()
}

#[aoc(day1, part2)]
fn solve_part2(input: &str) -> u32 {
    todo!()
}

#[cfg(test)]
mod tests {
    use super::*;

    const SAMPLE_INPUT: &'static str = "1000
2000
3000

4000

5000
6000

7000
8000
9000

10000";

    #[test]
    fn part1_example() {
        assert_eq!(solve_part1(SAMPLE_INPUT), 73211);
    }
}

Meta

rustc --version --verbose:

rustc 1.65.0 (897e37553 2022-11-02)
binary: rustc
commit-hash: 897e37553bba8b42751c67658967889d11ecd120
commit-date: 2022-11-02
host: x86_64-unknown-linux-gnu
release: 1.65.0
LLVM version: 15.0.0

rustc +nightly --version --verbose:

rustc 1.67.0-nightly (96ddd32c4 2022-11-14)
binary: rustc
commit-hash: 96ddd32c4bfb1d78f0cd03eb068b1710a8cebeef
commit-date: 2022-11-14
host: x86_64-unknown-linux-gnu
release: 1.67.0-nightly
LLVM version: 15.0.4

rustc +beta --version --verbose:

rustc 1.66.0-beta.2 (0040709e3 2022-11-20)
binary: rustc
commit-hash: 0040709e39bfa159d099ee14628ad4ac72f91406
commit-date: 2022-11-20
host: x86_64-unknown-linux-gnu
release: 1.66.0-beta.2
LLVM version: 15.0.2

Error output

   Compiling aoc2022 v0.1.0 (/home/laura/source/advent/mine/aoc2022)
warning: unused variable: `input`
  --> src/day1.rs:11:16
   |
11 | fn solve_part2(input: &str) -> u32 {
   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: `aoc2022` (lib test) generated 1 warning
thread 'rustc' panicked at 'attempted to read from stolen value: rustc_middle::mir::Body', compiler/rustc_mir_transform/src/ffi_unwind_calls.rs:50:78
stack backtrace:
   0:     0x7f4cd096dd40 - std::backtrace_rs::backtrace::libunwind::trace::h32eb3e08e874dd27
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f4cd096dd40 - std::backtrace_rs::backtrace::trace_unsynchronized::haa3f451d27bc11a5
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f4cd096dd40 - std::sys_common::backtrace::_print_fmt::h5b94a01bb4289bb5
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7f4cd096dd40 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb070b7fa7e3175df
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7f4cd09c8bfe - core::fmt::write::hd5207aebbb9a86e9
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/core/src/fmt/mod.rs:1202:17
   5:     0x7f4cd095e935 - std::io::Write::write_fmt::h3bd699bbd129ab8a
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/io/mod.rs:1679:15
   6:     0x7f4cd09709f3 - std::sys_common::backtrace::_print::h7a21be552fdf58da
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7f4cd09709f3 - std::sys_common::backtrace::print::ha85c41fe4dd80b13
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7f4cd09709f3 - std::panicking::default_hook::{{closure}}::h04cca40023d0eeca
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/panicking.rs:295:22
   9:     0x7f4cd09706df - std::panicking::default_hook::haa3ca8c310ed5402
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/panicking.rs:314:9
  10:     0x7f4cd319e2e1 - rustc_driver[cfb34b1539811fe8]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f4cd097122d - std::panicking::rust_panic_with_hook::h7b190ce1a948faac
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/panicking.rs:702:17
  12:     0x7f4cd0971087 - std::panicking::begin_panic_handler::{{closure}}::hbafbfdc3e1b97f68
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/panicking.rs:588:13
  13:     0x7f4cd096e1ec - std::sys_common::backtrace::__rust_end_short_backtrace::hda93e5fef243b4c0
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/sys_common/backtrace.rs:138:18
  14:     0x7f4cd0970da2 - rust_begin_unwind
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/panicking.rs:584:5
  15:     0x7f4cd09c57d3 - core::panicking::panic_fmt::h8d17ca1073d9a733
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/core/src/panicking.rs:142:14
  16:     0x7f4cd3020efc - rustc_mir_transform[de1f68ec5b9668bc]::ffi_unwind_calls::has_ffi_unwind_calls
  17:     0x7f4cd283088c - rustc_query_system[860ed7b39cdfb46b]::query::plumbing::try_load_from_disk_and_cache_in_memory::<rustc_query_impl[d6191eea714bd250]::plumbing::QueryCtxt, rustc_span[8f00505efff112e2]::def_id::LocalDefId, bool>
  18:     0x7f4cd282fb8e - rustc_query_system[860ed7b39cdfb46b]::query::plumbing::try_execute_query::<rustc_query_impl[d6191eea714bd250]::plumbing::QueryCtxt, rustc_query_system[860ed7b39cdfb46b]::query::caches::DefaultCache<rustc_span[8f00505efff112e2]::def_id::LocalDefId, bool>>
  19:     0x7f4cd30dd4fe - <rustc_query_impl[d6191eea714bd250]::Queries as rustc_middle[a9ca1c3f9fd197cd]::ty::query::QueryEngine>::has_ffi_unwind_calls
  20:     0x7f4cd302194b - rustc_mir_transform[de1f68ec5b9668bc]::ffi_unwind_calls::required_panic_strategy
  21:     0x7f4cd2ed1c2d - <rustc_query_system[860ed7b39cdfb46b]::dep_graph::graph::DepGraph<rustc_middle[a9ca1c3f9fd197cd]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[a9ca1c3f9fd197cd]::ty::context::TyCtxt, rustc_span[8f00505efff112e2]::def_id::CrateNum, core[8c92e53db3fc2eaa]::option::Option<rustc_target[c2a7a196ebbcf63b]::spec::PanicStrategy>>
  22:     0x7f4cd2ed0cce - rustc_query_system[860ed7b39cdfb46b]::query::plumbing::try_execute_query::<rustc_query_impl[d6191eea714bd250]::plumbing::QueryCtxt, rustc_query_system[860ed7b39cdfb46b]::query::caches::DefaultCache<rustc_span[8f00505efff112e2]::def_id::CrateNum, core[8c92e53db3fc2eaa]::option::Option<rustc_target[c2a7a196ebbcf63b]::spec::PanicStrategy>>>
  23:     0x7f4cd2ed04a0 - rustc_query_system[860ed7b39cdfb46b]::query::plumbing::get_query::<rustc_query_impl[d6191eea714bd250]::queries::required_panic_strategy, rustc_query_impl[d6191eea714bd250]::plumbing::QueryCtxt>
  24:     0x7f4cd252d5fb - <rustc_metadata[d8be3da67d4a4339]::rmeta::encoder::EncodeContext>::encode_crate_root
  25:     0x7f4cd20bac42 - rustc_metadata[d8be3da67d4a4339]::rmeta::encoder::encode_metadata_impl
  26:     0x7f4cd209d64e - rustc_data_structures[62ce3989ce8140ee]::sync::join::<rustc_metadata[d8be3da67d4a4339]::rmeta::encoder::encode_metadata::{closure#0}, rustc_metadata[d8be3da67d4a4339]::rmeta::encoder::encode_metadata::{closure#1}, (), ()>
  27:     0x7f4cd209d539 - rustc_metadata[d8be3da67d4a4339]::rmeta::encoder::encode_metadata
  28:     0x7f4cd209c623 - rustc_metadata[d8be3da67d4a4339]::fs::encode_and_write_metadata
  29:     0x7f4cd2090342 - <rustc_interface[3182dd864eff9d7d]::passes::QueryContext>::enter::<<rustc_interface[3182dd864eff9d7d]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[8c92e53db3fc2eaa]::result::Result<alloc[188ed69dc0d14b4b]::boxed::Box<dyn core[8c92e53db3fc2eaa]::any::Any>, rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>>
  30:     0x7f4cd204fe73 - <rustc_interface[3182dd864eff9d7d]::queries::Queries>::ongoing_codegen
  31:     0x7f4cd204e2ca - rustc_interface[3182dd864eff9d7d]::interface::create_compiler_and_run::<core[8c92e53db3fc2eaa]::result::Result<(), rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>, rustc_driver[cfb34b1539811fe8]::run_compiler::{closure#1}>
  32:     0x7f4cd204cac1 - <scoped_tls[e395fa6e23b19669]::ScopedKey<rustc_span[8f00505efff112e2]::SessionGlobals>>::set::<rustc_interface[3182dd864eff9d7d]::interface::run_compiler<core[8c92e53db3fc2eaa]::result::Result<(), rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>, rustc_driver[cfb34b1539811fe8]::run_compiler::{closure#1}>::{closure#0}, core[8c92e53db3fc2eaa]::result::Result<(), rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>>
  33:     0x7f4cd204c7af - std[71cb4861428b0c25]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[3182dd864eff9d7d]::util::run_in_thread_pool_with_globals<rustc_interface[3182dd864eff9d7d]::interface::run_compiler<core[8c92e53db3fc2eaa]::result::Result<(), rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>, rustc_driver[cfb34b1539811fe8]::run_compiler::{closure#1}>::{closure#0}, core[8c92e53db3fc2eaa]::result::Result<(), rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>>::{closure#0}, core[8c92e53db3fc2eaa]::result::Result<(), rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>>
  34:     0x7f4cd3001d70 - <<std[71cb4861428b0c25]::thread::Builder>::spawn_unchecked_<rustc_interface[3182dd864eff9d7d]::util::run_in_thread_pool_with_globals<rustc_interface[3182dd864eff9d7d]::interface::run_compiler<core[8c92e53db3fc2eaa]::result::Result<(), rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>, rustc_driver[cfb34b1539811fe8]::run_compiler::{closure#1}>::{closure#0}, core[8c92e53db3fc2eaa]::result::Result<(), rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>>::{closure#0}, core[8c92e53db3fc2eaa]::result::Result<(), rustc_errors[f77a66b68db622d5]::ErrorGuaranteed>>::{closure#1} as core[8c92e53db3fc2eaa]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  35:     0x7f4cd097b003 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h49f797984e2121bf
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/alloc/src/boxed.rs:1940:9
  36:     0x7f4cd097b003 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hfa4f3d0ee6440e0b
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/alloc/src/boxed.rs:1940:9
  37:     0x7f4cd097b003 - std::sys::unix::thread::Thread::new::thread_start::h62ca48b42d48a8fc
                               at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/sys/unix/thread.rs:108:17
  38:     0x7f4cd06d28fd - <unknown>
  39:     0x7f4cd0754a60 - <unknown>
  40:                0x0 - <unknown>

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 1.65.0 (897e37553 2022-11-02) running on x86_64-unknown-linux-gnu

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

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

query stack during panic:
#0 [has_ffi_unwind_calls] check if `day1::day1_part1::<impl at src/day1.rs:1:1: 1:20>::day1_part1` contains FFI-unwind calls
#1 [required_panic_strategy] query a crate's required panic strategy
end of query stack
warning: `aoc2022` (lib) generated 1 warning (1 duplicate)
error: could not compile `aoc2022`; 1 warning emitted

Backtrace

   Compiling aoc2022 v0.1.0 (/home/laura/source/advent/mine/aoc2022)
warning: unused variable: `input`
  --> src/day1.rs:11:16
   |
11 | fn solve_part2(input: &str) -> u32 {
   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: `aoc2022` (lib test) generated 1 warning
thread 'rustc' panicked at 'attempted to read from stolen value: rustc_middle::mir::Body', compiler/rustc_mir_transform/src/ffi_unwind_calls.rs:50:78
stack backtrace:
   0: rust_begin_unwind
             at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/panicking.rs:584:5
   1: core::panicking::panic_fmt
             at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/core/src/panicking.rs:142:14
   2: rustc_mir_transform::ffi_unwind_calls::has_ffi_unwind_calls
   3: rustc_query_system::query::plumbing::try_load_from_disk_and_cache_in_memory::<rustc_query_impl::plumbing::QueryCtxt, rustc_span::def_id::LocalDefId, bool>
   4: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::LocalDefId, bool>>
   5: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::has_ffi_unwind_calls
   6: rustc_mir_transform::ffi_unwind_calls::required_panic_strategy
   7: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle::ty::context::TyCtxt, rustc_span::def_id::CrateNum, core::option::Option<rustc_target::spec::PanicStrategy>>
   8: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::CrateNum, core::option::Option<rustc_target::spec::PanicStrategy>>>
   9: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::required_panic_strategy, rustc_query_impl::plumbing::QueryCtxt>
  10: <rustc_metadata::rmeta::encoder::EncodeContext>::encode_crate_root
  11: rustc_metadata::rmeta::encoder::encode_metadata_impl
  12: rustc_data_structures::sync::join::<rustc_metadata::rmeta::encoder::encode_metadata::{closure#0}, rustc_metadata::rmeta::encoder::encode_metadata::{closure#1}, (), ()>
  13: rustc_metadata::rmeta::encoder::encode_metadata
  14: rustc_metadata::fs::encode_and_write_metadata
  15: <rustc_interface::passes::QueryContext>::enter::<<rustc_interface::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core::result::Result<alloc::boxed::Box<dyn core::any::Any>, rustc_errors::ErrorGuaranteed>>
  16: <rustc_interface::queries::Queries>::ongoing_codegen
  17: rustc_interface::interface::create_compiler_and_run::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>
  18: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
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 1.65.0 (897e37553 2022-11-02) running on x86_64-unknown-linux-gnu

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

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

query stack during panic:
#0 [has_ffi_unwind_calls] check if `day1::day1_part1::<impl at src/day1.rs:1:1: 1:20>::day1_part1` contains FFI-unwind calls
#1 [required_panic_strategy] query a crate's required panic strategy
end of query stack
warning: `aoc2022` (lib) generated 1 warning (1 duplicate)
error: could not compile `aoc2022`; 1 warning emitted

[langston-barrett]

I was unable to reproduce this by cloning this repo, going into aoc2022 and setting up lib.rs and day1.rs as indicated.

@Laura7089 Are you still able to reproduce this? Can you post a standalone example?

[cjgillot]

Very likely fixed by #108820, but we don't have a test for it unfortunately.

[Laura7089]

I've checked out 8ce3871 of the repo, and setup src/lib.rs and src/day1.rs as I indicated, but I'm unable to reproduce the bug with either latest stable (rustc 1.68.0 (2c8cc3432 2023-03-06)) or the version in the post (backdated with rustup install 1.65 and cargo +1.65 test).

Unfortunately I don't think I have any revision in that repo which produced this error :( . Additionally, since Cargo.lock isn't checked into the repo, I can't guarantee I have the same dep tree as before.

[cjgillot]

Marking as fixed by #108820. Please open a new instance of this bug if it appears again.