[INFO] fetching crate panic-ub 0.0.0...
[INFO] testing panic-ub-0.0.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate panic-ub 0.0.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate panic-ub 0.0.0
[INFO] finished tweaking crates.io crate panic-ub 0.0.0
[INFO] tweaked toml for crates.io crate panic-ub 0.0.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate panic-ub 0.0.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate panic-ub 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82e35e3069dc6c1b1b6d627b1226786f87327da4d6691d4bb7a72d0cf2af4856
[INFO] running `Command { std: "docker" "start" "-a" "82e35e3069dc6c1b1b6d627b1226786f87327da4d6691d4bb7a72d0cf2af4856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82e35e3069dc6c1b1b6d627b1226786f87327da4d6691d4bb7a72d0cf2af4856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82e35e3069dc6c1b1b6d627b1226786f87327da4d6691d4bb7a72d0cf2af4856", kill_on_drop: false }`
[INFO] [stdout] 82e35e3069dc6c1b1b6d627b1226786f87327da4d6691d4bb7a72d0cf2af4856
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b09f129cf29e957178daff6c687e282e31716efabd33577d06ecdef04b5f07e
[INFO] running `Command { std: "docker" "start" "-a" "6b09f129cf29e957178daff6c687e282e31716efabd33577d06ecdef04b5f07e", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-ub v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `hint::unreachable_unchecked` and `panic::PanicInfo`
[INFO] [stdout]  --> src/lib.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use core::{hint::unreachable_unchecked, panic::PanicInfo};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "6b09f129cf29e957178daff6c687e282e31716efabd33577d06ecdef04b5f07e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b09f129cf29e957178daff6c687e282e31716efabd33577d06ecdef04b5f07e", kill_on_drop: false }`
[INFO] [stdout] 6b09f129cf29e957178daff6c687e282e31716efabd33577d06ecdef04b5f07e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4b5391303e4f61c5b0c8b800b4a39908ec9f580fdc8c2cd9b44fd14a9444b50
[INFO] running `Command { std: "docker" "start" "-a" "a4b5391303e4f61c5b0c8b800b4a39908ec9f580fdc8c2cd9b44fd14a9444b50", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `hint::unreachable_unchecked` and `panic::PanicInfo`
[INFO] [stdout]  --> src/lib.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use core::{hint::unreachable_unchecked, panic::PanicInfo};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling panic-ub v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `hint::unreachable_unchecked` and `panic::PanicInfo`
[INFO] [stdout]  --> src/lib.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use core::{hint::unreachable_unchecked, panic::PanicInfo};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "a4b5391303e4f61c5b0c8b800b4a39908ec9f580fdc8c2cd9b44fd14a9444b50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4b5391303e4f61c5b0c8b800b4a39908ec9f580fdc8c2cd9b44fd14a9444b50", kill_on_drop: false }`
[INFO] [stdout] a4b5391303e4f61c5b0c8b800b4a39908ec9f580fdc8c2cd9b44fd14a9444b50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0404c8f574ee1186478a33d61d37ecd69739701ab04100683396462364c6e9a5
[INFO] running `Command { std: "docker" "start" "-a" "0404c8f574ee1186478a33d61d37ecd69739701ab04100683396462364c6e9a5", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `hint::unreachable_unchecked` and `panic::PanicInfo`
[INFO] [stderr]  --> src/lib.rs:4:16
[INFO] [stderr]   |
[INFO] [stderr] 4 |     use core::{hint::unreachable_unchecked, panic::PanicInfo};
[INFO] [stderr]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `panic-ub` (lib) generated 1 warning (run `cargo fix --lib -p panic-ub` to apply 1 suggestion)
[INFO] [stderr] warning: `panic-ub` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/panic_ub-31be96b45a31d8b9)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests panic_ub
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0404c8f574ee1186478a33d61d37ecd69739701ab04100683396462364c6e9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0404c8f574ee1186478a33d61d37ecd69739701ab04100683396462364c6e9a5", kill_on_drop: false }`
[INFO] [stdout] 0404c8f574ee1186478a33d61d37ecd69739701ab04100683396462364c6e9a5