[INFO] fetching crate polars-readlines 0.2.1...
[INFO] testing polars-readlines-0.2.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate polars-readlines 0.2.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate polars-readlines 0.2.1
[INFO] finished tweaking crates.io crate polars-readlines 0.2.1
[INFO] tweaked toml for crates.io crate polars-readlines 0.2.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate polars-readlines 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] 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 145 packages to latest compatible versions
[INFO] [stderr]       Adding polars v0.42.0 (available: v0.51.0)
[INFO] [stderr]       Adding polars-arrow v0.42.0 (available: v0.51.0)
[INFO] [stderr]       Adding pyo3 v0.22.6 (available: v0.26.0)
[INFO] [stderr]       Adding pyo3-polars v0.16.1 (available: v0.24.0)
[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] 381695a725faac2c4d5808dddc8ffb64c69bb9254f458cabf8c5bcfbf1d08772
[INFO] running `Command { std: "docker" "start" "-a" "381695a725faac2c4d5808dddc8ffb64c69bb9254f458cabf8c5bcfbf1d08772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "381695a725faac2c4d5808dddc8ffb64c69bb9254f458cabf8c5bcfbf1d08772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "381695a725faac2c4d5808dddc8ffb64c69bb9254f458cabf8c5bcfbf1d08772", kill_on_drop: false }`
[INFO] [stdout] 381695a725faac2c4d5808dddc8ffb64c69bb9254f458cabf8c5bcfbf1d08772
[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] 64a78cba82132419a69fcb754cb140d85b9d767dd00f671692ec5dae416685af
[INFO] running `Command { std: "docker" "start" "-a" "64a78cba82132419a69fcb754cb140d85b9d767dd00f671692ec5dae416685af", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling array-init-cursor v0.2.1
[INFO] [stderr]    Compiling target-features v0.1.6
[INFO] [stderr]    Compiling psm v0.1.26
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling stacker v0.1.21
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling polars-utils v0.42.0
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling planus v0.3.1
[INFO] [stderr]    Compiling arrow-schema v56.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling raw-cpuid v11.6.0
[INFO] [stderr]    Compiling bytemuck v1.23.2
[INFO] [stderr]    Compiling memmap2 v0.7.1
[INFO] [stderr]    Compiling polars-arrow v0.42.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling fast-float v0.2.0
[INFO] [stderr]    Compiling atoi_simd v0.15.6
[INFO] [stderr]    Compiling strength_reduce v0.2.4
[INFO] [stderr]    Compiling ethnum v1.5.2
[INFO] [stderr]    Compiling streaming-iterator v0.1.9
[INFO] [stderr]    Compiling polars-compute v0.42.0
[INFO] [stderr]    Compiling polars-core v0.42.0
[INFO] [stderr]    Compiling fallible-streaming-iterator v0.1.9
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling polars v0.42.0
[INFO] [stderr]    Compiling xxhash-rust v0.8.15
[INFO] [stderr]    Compiling parquet-format-safe v0.2.4
[INFO] [stderr]    Compiling streaming-decompression v0.1.2
[INFO] [stderr]    Compiling memmap2 v0.9.8
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling half v2.6.0
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling multiversion-macros v0.7.4
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling arrow-buffer v56.2.0
[INFO] [stderr]    Compiling polars-arrow-format v0.1.0
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling arrow-data v56.2.0
[INFO] [stderr]    Compiling multiversion v0.7.4
[INFO] [stderr]    Compiling arrow-array v56.2.0
[INFO] [stderr]    Compiling polars-error v0.42.0
[INFO] [stderr]    Compiling polars-row v0.42.0
[INFO] [stderr]    Compiling polars-parquet v0.42.0
[INFO] [stderr]    Compiling polars-readlines v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 01s
[INFO] running `Command { std: "docker" "inspect" "64a78cba82132419a69fcb754cb140d85b9d767dd00f671692ec5dae416685af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64a78cba82132419a69fcb754cb140d85b9d767dd00f671692ec5dae416685af", kill_on_drop: false }`
[INFO] [stdout] 64a78cba82132419a69fcb754cb140d85b9d767dd00f671692ec5dae416685af
[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] dcc64731bb92f842ee6bfabfd7a4785db3bce502f6ae12c1f6242cb2173a6452
[INFO] running `Command { std: "docker" "start" "-a" "dcc64731bb92f842ee6bfabfd7a4785db3bce502f6ae12c1f6242cb2173a6452", kill_on_drop: false }`
[INFO] [stderr]    Compiling polars-readlines v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "dcc64731bb92f842ee6bfabfd7a4785db3bce502f6ae12c1f6242cb2173a6452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcc64731bb92f842ee6bfabfd7a4785db3bce502f6ae12c1f6242cb2173a6452", kill_on_drop: false }`
[INFO] [stdout] dcc64731bb92f842ee6bfabfd7a4785db3bce502f6ae12c1f6242cb2173a6452
[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] d6519fc213aaad80e4f5b301193c8b9a1b06a9dfbe278e4a1b380efbbb4379ff
[INFO] running `Command { std: "docker" "start" "-a" "d6519fc213aaad80e4f5b301193c8b9a1b06a9dfbe278e4a1b380efbbb4379ff", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/polars_readlines-607efb4739080f57)
[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_readlines
[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" "d6519fc213aaad80e4f5b301193c8b9a1b06a9dfbe278e4a1b380efbbb4379ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6519fc213aaad80e4f5b301193c8b9a1b06a9dfbe278e4a1b380efbbb4379ff", kill_on_drop: false }`
[INFO] [stdout] d6519fc213aaad80e4f5b301193c8b9a1b06a9dfbe278e4a1b380efbbb4379ff