[INFO] fetching crate polars-arrow-format 0.2.1...
[INFO] testing polars-arrow-format-0.2.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate polars-arrow-format 0.2.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate polars-arrow-format 0.2.1
[INFO] finished tweaking crates.io crate polars-arrow-format 0.2.1
[INFO] tweaked toml for crates.io crate polars-arrow-format 0.2.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate polars-arrow-format 0.2.1 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] crate crates.io crate polars-arrow-format 0.2.1 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 159cf8780c3d3b5528abee6061b24ad33d096cfbc51c679572a2dc7dd3807c42
[INFO] running `Command { std: "docker" "start" "-a" "159cf8780c3d3b5528abee6061b24ad33d096cfbc51c679572a2dc7dd3807c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "159cf8780c3d3b5528abee6061b24ad33d096cfbc51c679572a2dc7dd3807c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "159cf8780c3d3b5528abee6061b24ad33d096cfbc51c679572a2dc7dd3807c42", kill_on_drop: false }`
[INFO] [stdout] 159cf8780c3d3b5528abee6061b24ad33d096cfbc51c679572a2dc7dd3807c42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8357428a9e13332d0f35a0a3fcdef578f0dce37bde824186f40579b71f3da152
[INFO] running `Command { std: "docker" "start" "-a" "8357428a9e13332d0f35a0a3fcdef578f0dce37bde824186f40579b71f3da152", kill_on_drop: false }`
[INFO] [stderr]    Compiling polars-arrow-format v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "8357428a9e13332d0f35a0a3fcdef578f0dce37bde824186f40579b71f3da152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8357428a9e13332d0f35a0a3fcdef578f0dce37bde824186f40579b71f3da152", kill_on_drop: false }`
[INFO] [stdout] 8357428a9e13332d0f35a0a3fcdef578f0dce37bde824186f40579b71f3da152
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 694944e2ff5fe7393e6c6ced65492d7ef8d31841933303be34620c9f311ea450
[INFO] running `Command { std: "docker" "start" "-a" "694944e2ff5fe7393e6c6ced65492d7ef8d31841933303be34620c9f311ea450", kill_on_drop: false }`
[INFO] [stderr]    Compiling polars-arrow-format v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "694944e2ff5fe7393e6c6ced65492d7ef8d31841933303be34620c9f311ea450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "694944e2ff5fe7393e6c6ced65492d7ef8d31841933303be34620c9f311ea450", kill_on_drop: false }`
[INFO] [stdout] 694944e2ff5fe7393e6c6ced65492d7ef8d31841933303be34620c9f311ea450
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 6a3cc9c9a7208975c64724f9f6ebf543ec34be4e914f7a66359ab12bec4b1ad9
[INFO] running `Command { std: "docker" "start" "-a" "6a3cc9c9a7208975c64724f9f6ebf543ec34be4e914f7a66359ab12bec4b1ad9", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/polars_arrow_format-5a51a64abefd0f4f)
[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] [stderr]    Doc-tests polars_arrow_format
[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" "6a3cc9c9a7208975c64724f9f6ebf543ec34be4e914f7a66359ab12bec4b1ad9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a3cc9c9a7208975c64724f9f6ebf543ec34be4e914f7a66359ab12bec4b1ad9", kill_on_drop: false }`
[INFO] [stdout] 6a3cc9c9a7208975c64724f9f6ebf543ec34be4e914f7a66359ab12bec4b1ad9