[INFO] fetching crate metamath-rs 0.3.8...
[INFO] testing metamath-rs-0.3.8 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate metamath-rs 0.3.8 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate metamath-rs 0.3.8
[INFO] finished tweaking crates.io crate metamath-rs 0.3.8
[INFO] tweaked toml for crates.io crate metamath-rs 0.3.8 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate metamath-rs 0.3.8 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 26 packages to latest compatible versions
[INFO] [stderr]       Adding annotate-snippets v0.9.2 (available: v0.12.10)
[INFO] [stderr]       Adding itertools v0.12.1 (available: v0.14.0)
[INFO] [stderr]       Adding xml-rs v0.8.28 (available: v1.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62cebe31c6e2e75bebd6cc6276cc044d35f1cb85fb7dbafc271723ebd6d773cc
[INFO] running `Command { std: "docker" "start" "-a" "62cebe31c6e2e75bebd6cc6276cc044d35f1cb85fb7dbafc271723ebd6d773cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62cebe31c6e2e75bebd6cc6276cc044d35f1cb85fb7dbafc271723ebd6d773cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62cebe31c6e2e75bebd6cc6276cc044d35f1cb85fb7dbafc271723ebd6d773cc", kill_on_drop: false }`
[INFO] [stdout] 62cebe31c6e2e75bebd6cc6276cc044d35f1cb85fb7dbafc271723ebd6d773cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8731dc1df375683ea09d659abbf56cc79fd95ae8eff92648df67a28eeebc33a0
[INFO] running `Command { std: "docker" "start" "-a" "8731dc1df375683ea09d659abbf56cc79fd95ae8eff92648df67a28eeebc33a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling yansi-term v0.1.2
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling tinyvec v1.10.0
[INFO] [stderr]    Compiling filetime v0.2.27
[INFO] [stderr]    Compiling annotate-snippets v0.9.2
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling metamath-rs v0.3.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.06s
[INFO] running `Command { std: "docker" "inspect" "8731dc1df375683ea09d659abbf56cc79fd95ae8eff92648df67a28eeebc33a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8731dc1df375683ea09d659abbf56cc79fd95ae8eff92648df67a28eeebc33a0", kill_on_drop: false }`
[INFO] [stdout] 8731dc1df375683ea09d659abbf56cc79fd95ae8eff92648df67a28eeebc33a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] facb3b3d79d26aaded8eab6192c176c9a7453ea26bba1c112db422d9b683ea74
[INFO] running `Command { std: "docker" "start" "-a" "facb3b3d79d26aaded8eab6192c176c9a7453ea26bba1c112db422d9b683ea74", kill_on_drop: false }`
[INFO] [stderr]    Compiling assert_matches v1.5.0
[INFO] [stderr]    Compiling metamath-rs v0.3.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.00s
[INFO] running `Command { std: "docker" "inspect" "facb3b3d79d26aaded8eab6192c176c9a7453ea26bba1c112db422d9b683ea74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "facb3b3d79d26aaded8eab6192c176c9a7453ea26bba1c112db422d9b683ea74", kill_on_drop: false }`
[INFO] [stdout] facb3b3d79d26aaded8eab6192c176c9a7453ea26bba1c112db422d9b683ea74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 49e0b7e874cd81ade6ec43f1a6e4ac93e48d4bc6ff4fe4591b4018f595c463a4
[INFO] running `Command { std: "docker" "start" "-a" "49e0b7e874cd81ade6ec43f1a6e4ac93e48d4bc6ff4fe4591b4018f595c463a4", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/metamath_rs-ef4ac0e34f3b36c6)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test comment_parser_tests::edge_cases ... ok
[INFO] [stdout] test comment_parser_tests::test_double_underscore ... ok
[INFO] [stdout] test comment_parser_tests::test_bib ... ok
[INFO] [stdout] test comment_parser_tests::test_label ... ok
[INFO] [stdout] test comment_parser_tests::test_para ... ok
[INFO] [stdout] test comment_parser_tests::test_discouragements ... ok
[INFO] [stdout] test comment_parser_tests::test_subscript ... ok
[INFO] [stdout] test comment_parser_tests::test_three_subscript ... ok
[INFO] [stdout] test comment_parser_tests::test_two_subscript ... ok
[INFO] [stderr] 
[INFO] [stdout] test comment_parser_tests::test_italic ... ok
[INFO] [stderr] thread 'formula_tests::test_substitute' (32) panicked at src/util.rs:38:17:
[INFO] [stdout] test comment_parser_tests::test_html ... ok
[INFO] [stderr] unsafe precondition(s) violated: slice::get_unchecked_mut requires that the index is within the slice
[INFO] [stderr] 
[INFO] [stderr] This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x63831c0ab872 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x63831c0ab872 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x63831c0ab872 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]    3:     0x63831c0ab872 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]    4:     0x63831c0bc3da - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]    5:     0x63831c0bc3da - core::fmt::write::h952c506e2dbe9cff
[INFO] [stderr]    6:     0x63831c07a5d6 - std::io::default_write_fmt::h72db0b4dbd5dcfa2
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x63831c07a5d6 - std::io::Write::write_fmt::hb496f2b9b027aa16
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]    8:     0x63831c08ad59 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]    9:     0x63831c08ad59 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stderr]   10:     0x63831c08abb9 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:319:9
[INFO] [stderr]   11:     0x63831bdd549e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stderr]   12:     0x63831bdd549e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stderr]   13:     0x63831c08afd2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stderr]   14:     0x63831c08afd2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stderr]   15:     0x63831c08ae4a - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:691:13
[INFO] [stderr]   16:     0x63831c086389 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]   17:     0x63831c06f2ed - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stderr]   18:     0x63831c0c451d - core::panicking::panic_nounwind_fmt::runtime::hdd333623f60f3530
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:122:22
[INFO] [stderr]   19:     0x63831c0c451d - core::panicking::panic_nounwind_fmt::ha2bdc0d440fd6df8
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/intrinsics/mod.rs:2432:9
[INFO] [stderr]   20:     0x63831bd7ef64 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked_mut::precondition_check::h397e0028b46a5cc1
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ub_checks.rs:73:21
[INFO] [stderr]   21:     0x63831bd7ef09 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked_mut::h8d100a1b611d06a7
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ub_checks.rs:78:17
[INFO] [stderr]   22:     0x63831bd68048 - core::slice::<impl [T]>::get_unchecked_mut::hc7572420158f07e2
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/slice/mod.rs:691:30
[INFO] [stderr]   23:     0x63831bd5100a - metamath_rs::util::fast_extend::h199279be80869170
[INFO] [stderr]                                at /opt/rustwide/workdir/src/util.rs:38:17
[INFO] [stderr]   24:     0x63831bd9d5cd - metamath_rs::scopeck::scan_expression::hddf407d1ca62fd9c
[INFO] [stderr]                                at /opt/rustwide/workdir/src/scopeck.rs:493:17
[INFO] [stderr]   25:     0x63831bd9f1c4 - metamath_rs::scopeck::construct_full_frame::h4c5b0619ecb1d157
[INFO] [stderr]                                at /opt/rustwide/workdir/src/scopeck.rs:598:20
[INFO] [stderr]   26:     0x63831bd9e3ec - metamath_rs::scopeck::scope_check_assert::h39c058cabd108715
[INFO] [stderr]                                at /opt/rustwide/workdir/src/scopeck.rs:638:13
[INFO] [stderr]   27:     0x63831bd9ea2e - metamath_rs::scopeck::scope_check_single::h424efee90c363862
[INFO] [stderr]                                at /opt/rustwide/workdir/src/scopeck.rs:913:63
[INFO] [stderr]   28:     0x63831bd9c646 - metamath_rs::scopeck::scope_check::{{closure}}::h26d2ea61626567d6
[INFO] [stderr]                                at /opt/rustwide/workdir/src/scopeck.rs:999:31
[INFO] [stderr]   29:     0x63831bd964d3 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb7bec4d62c340a99
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   30:     0x63831bd70b07 - std::panicking::catch_unwind::do_call::h95ba406b15cdfdde
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stderr]   31:     0x63831bd4ff8b - __rust_try
[INFO] [stderr]   32:     0x63831bd478a9 - std::panicking::catch_unwind::h840351b8e8d969ff
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stderr]   33:     0x63831bd478a9 - std::panic::catch_unwind::h432cc04810ec8de2
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stderr]   34:     0x63831bd346e8 - metamath_rs::database::Executor::exec::{{closure}}::h19cff7e3eb784ece
[INFO] [stderr]                                at /opt/rustwide/workdir/src/database.rs:292:27
[INFO] [stderr]   35:     0x63831bd03a46 - <alloc::boxed::Box<F,A> as core::ops::function::FnMut<Args>>::call_mut::h41380a4044207060
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2213:9
[INFO] [stderr]   36:     0x63831bd30305 - metamath_rs::database::queue_work::h41b48e3eec8994f0
[INFO] [stderr]                                at /opt/rustwide/workdir/src/database.rs:222:9
[INFO] [stderr]   37:     0x63831bd33fc6 - metamath_rs::database::Executor::exec::hceb8c7f8c0d8f2cb
[INFO] [stderr]                                at /opt/rustwide/workdir/src/database.rs:285:9
[INFO] [stderr]   38:     0x63831bd9c2e0 - metamath_rs::scopeck::scope_check::h0e6ca9ae91e09cfb
[INFO] [stderr]                                at /opt/rustwide/workdir/src/scopeck.rs:989:42
[INFO] [stderr]   39:     0x63831bd3207b - metamath_rs::database::Database::scope_pass::{{closure}}::h1b9001846c3e5b31
[INFO] [stderr]                                at /opt/rustwide/workdir/src/database.rs:551:17
[INFO] [stderr]   40:     0x63831bd31bbc - metamath_rs::database::time::hcfd35a08a5fc8191
[INFO] [stderr]                                at /opt/rustwide/workdir/src/database.rs:417:15
[INFO] [stderr]   41:     0x63831bd31f8b - metamath_rs::database::Database::scope_pass::h64f6473f6bf88363
[INFO] [stderr]                                at /opt/rustwide/workdir/src/database.rs:547:13
[INFO] [stderr]   42:     0x63831bd3236e - metamath_rs::database::Database::stmt_parse_pass::h6ed8b5e9ff78de3c
[INFO] [stderr]                                at /opt/rustwide/workdir/src/database.rs:747:18
[INFO] [stderr]   43:     0x63831bcf3785 - metamath_rs::formula_tests::test_substitute::hce06a29789c4e6d3
[INFO] [stderr]                                at /opt/rustwide/workdir/src/formula_tests.rs:69:25
[INFO] [stderr]   44:     0x63831bcf4227 - metamath_rs::formula_tests::test_substitute::{{closure}}::h143168c5382e6565
[INFO] [stderr]                                at /opt/rustwide/workdir/src/formula_tests.rs:67:21
[INFO] [stderr]   45:     0x63831bd74586 - core::ops::function::FnOnce::call_once::hbbee7df46565bd19
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   46:     0x63831bdd529b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   47:     0x63831bdd529b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stderr]   48:     0x63831bde8c6a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stderr]   49:     0x63831bde8c6a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   50:     0x63831bde8c6a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stderr]   51:     0x63831bde8c6a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stderr]   52:     0x63831bde8c6a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stderr]   53:     0x63831bde8c6a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stderr]   54:     0x63831bde8c6a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stderr]   55:     0x63831bdc30c4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stderr]   56:     0x63831bdc30c4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stderr]   57:     0x63831bdc6982 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stderr]   58:     0x63831bdc6982 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   59:     0x63831bdc6982 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stderr]   60:     0x63831bdc6982 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stderr]   61:     0x63831bdc6982 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stderr]   62:     0x63831bdc6982 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stderr]   63:     0x63831bdc6982 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   64:     0x63831c08161f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stderr]   65:     0x63831c08161f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stderr]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stderr]   66:     0x75b08cde9aa4 - <unknown>
[INFO] [stderr]   67:     0x75b08ce76a64 - clone
[INFO] [stderr]   68:                0x0 - <unknown>
[INFO] [stderr] thread caused non-unwinding panic. aborting.
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/metamath_rs-ef4ac0e34f3b36c6` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "49e0b7e874cd81ade6ec43f1a6e4ac93e48d4bc6ff4fe4591b4018f595c463a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49e0b7e874cd81ade6ec43f1a6e4ac93e48d4bc6ff4fe4591b4018f595c463a4", kill_on_drop: false }`
[INFO] [stdout] 49e0b7e874cd81ade6ec43f1a6e4ac93e48d4bc6ff4fe4591b4018f595c463a4
