[INFO] fetching crate stepper-engine 0.1.0...
[INFO] testing stepper-engine-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate stepper-engine 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate stepper-engine 0.1.0
[INFO] finished tweaking crates.io crate stepper-engine 0.1.0
[INFO] tweaked toml for crates.io crate stepper-engine 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stepper-engine 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate stepper-engine 0.1.0 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 853d95b12bb7a3c6a09c580f87629b3a6245ab27c6ee4fac826e26c2cd668e4c
[INFO] running `Command { std: "docker" "start" "-a" "853d95b12bb7a3c6a09c580f87629b3a6245ab27c6ee4fac826e26c2cd668e4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "853d95b12bb7a3c6a09c580f87629b3a6245ab27c6ee4fac826e26c2cd668e4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "853d95b12bb7a3c6a09c580f87629b3a6245ab27c6ee4fac826e26c2cd668e4c", kill_on_drop: false }`
[INFO] [stdout] 853d95b12bb7a3c6a09c580f87629b3a6245ab27c6ee4fac826e26c2cd668e4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7214da2c46fc04a884791213f4c3131d47799e053b1bbad7adbdd6b4103bcc39
[INFO] running `Command { std: "docker" "start" "-a" "7214da2c46fc04a884791213f4c3131d47799e053b1bbad7adbdd6b4103bcc39", kill_on_drop: false }`
[INFO] [stderr]    Compiling stepper-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "7214da2c46fc04a884791213f4c3131d47799e053b1bbad7adbdd6b4103bcc39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7214da2c46fc04a884791213f4c3131d47799e053b1bbad7adbdd6b4103bcc39", kill_on_drop: false }`
[INFO] [stdout] 7214da2c46fc04a884791213f4c3131d47799e053b1bbad7adbdd6b4103bcc39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd84c4d7edd9e50e98b78cd345a1361df645883823332de051e8fab6879d08e6
[INFO] running `Command { std: "docker" "start" "-a" "dd84c4d7edd9e50e98b78cd345a1361df645883823332de051e8fab6879d08e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling stepper-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "dd84c4d7edd9e50e98b78cd345a1361df645883823332de051e8fab6879d08e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd84c4d7edd9e50e98b78cd345a1361df645883823332de051e8fab6879d08e6", kill_on_drop: false }`
[INFO] [stdout] dd84c4d7edd9e50e98b78cd345a1361df645883823332de051e8fab6879d08e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2c860752b44438be054d92ac789c921a5dd58d5c5dd3f9e7c37c86f803d3623d
[INFO] running `Command { std: "docker" "start" "-a" "2c860752b44438be054d92ac789c921a5dd58d5c5dd3f9e7c37c86f803d3623d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stepper_engine-fc22c0e1f970cd13)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stepper_engine
[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" "2c860752b44438be054d92ac789c921a5dd58d5c5dd3f9e7c37c86f803d3623d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c860752b44438be054d92ac789c921a5dd58d5c5dd3f9e7c37c86f803d3623d", kill_on_drop: false }`
[INFO] [stdout] 2c860752b44438be054d92ac789c921a5dd58d5c5dd3f9e7c37c86f803d3623d