[INFO] fetching crate ju-tcs-rust-23-20 0.1.1...
[INFO] testing ju-tcs-rust-23-20-0.1.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate ju-tcs-rust-23-20 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate ju-tcs-rust-23-20 0.1.1
[INFO] finished tweaking crates.io crate ju-tcs-rust-23-20 0.1.1
[INFO] tweaked toml for crates.io crate ju-tcs-rust-23-20 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ju-tcs-rust-23-20 0.1.1 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c675ab9ddf31baf0ede3f0a2dd581562434e4ec4b21969c755e8cbb5544142bc
[INFO] running `Command { std: "docker" "start" "-a" "c675ab9ddf31baf0ede3f0a2dd581562434e4ec4b21969c755e8cbb5544142bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c675ab9ddf31baf0ede3f0a2dd581562434e4ec4b21969c755e8cbb5544142bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c675ab9ddf31baf0ede3f0a2dd581562434e4ec4b21969c755e8cbb5544142bc", kill_on_drop: false }`
[INFO] [stdout] c675ab9ddf31baf0ede3f0a2dd581562434e4ec4b21969c755e8cbb5544142bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f8647773557357e2be57957c8456ba8a319fac2bdc4b2aa41eecaf02c9f7856d
[INFO] running `Command { std: "docker" "start" "-a" "f8647773557357e2be57957c8456ba8a319fac2bdc4b2aa41eecaf02c9f7856d", kill_on_drop: false }`
[INFO] [stderr]    Compiling ju-tcs-rust-23-20 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "f8647773557357e2be57957c8456ba8a319fac2bdc4b2aa41eecaf02c9f7856d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8647773557357e2be57957c8456ba8a319fac2bdc4b2aa41eecaf02c9f7856d", kill_on_drop: false }`
[INFO] [stdout] f8647773557357e2be57957c8456ba8a319fac2bdc4b2aa41eecaf02c9f7856d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] cf24ed90c9e7c528e4b3ed4a18b3fd3e39bb18fe15a424df545adad6719361dd
[INFO] running `Command { std: "docker" "start" "-a" "cf24ed90c9e7c528e4b3ed4a18b3fd3e39bb18fe15a424df545adad6719361dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling ju-tcs-rust-23-20 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "cf24ed90c9e7c528e4b3ed4a18b3fd3e39bb18fe15a424df545adad6719361dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf24ed90c9e7c528e4b3ed4a18b3fd3e39bb18fe15a424df545adad6719361dd", kill_on_drop: false }`
[INFO] [stdout] cf24ed90c9e7c528e4b3ed4a18b3fd3e39bb18fe15a424df545adad6719361dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 54064e7f24b09b9f4a28caa36df663d842382a7f82e5808f545f53edfd529d3d
[INFO] running `Command { std: "docker" "start" "-a" "54064e7f24b09b9f4a28caa36df663d842382a7f82e5808f545f53edfd529d3d", 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/ju_tcs_rust_23_20-29ed5e5c02f71abd)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_head ... ok
[INFO] [stdout] test tests::test_tail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ju_tcs_rust_23_20
[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" "54064e7f24b09b9f4a28caa36df663d842382a7f82e5808f545f53edfd529d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54064e7f24b09b9f4a28caa36df663d842382a7f82e5808f545f53edfd529d3d", kill_on_drop: false }`
[INFO] [stdout] 54064e7f24b09b9f4a28caa36df663d842382a7f82e5808f545f53edfd529d3d