[INFO] fetching crate polars-io 0.19.1...
[INFO] testing polars-io-0.19.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate polars-io 0.19.1 into /workspace/builds/worker-91/source
[INFO] validating manifest of crates.io crate polars-io 0.19.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polars-io 0.19.1
[INFO] finished tweaking crates.io crate polars-io 0.19.1
[INFO] tweaked toml for crates.io crate polars-io 0.19.1 written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b282064c5fbdba2d2c2f29ce551337515b822d45bc6769d78c2f0696f165ec0
[INFO] running `Command { std: "docker" "start" "-a" "3b282064c5fbdba2d2c2f29ce551337515b822d45bc6769d78c2f0696f165ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b282064c5fbdba2d2c2f29ce551337515b822d45bc6769d78c2f0696f165ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b282064c5fbdba2d2c2f29ce551337515b822d45bc6769d78c2f0696f165ec0", kill_on_drop: false }`
[INFO] [stdout] 3b282064c5fbdba2d2c2f29ce551337515b822d45bc6769d78c2f0696f165ec0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e7dcc5639ab47771c9eb66709266d270ebd6905457920fecc6adec936dae816
[INFO] running `Command { std: "docker" "start" "-a" "3e7dcc5639ab47771c9eb66709266d270ebd6905457920fecc6adec936dae816", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling hash_hasher v2.0.3
[INFO] [stderr]    Compiling simdutf8 v0.1.3
[INFO] [stderr]    Compiling strength_reduce v0.2.3
[INFO] [stderr]    Compiling anyhow v1.0.55
[INFO] [stderr]    Compiling unsafe_unwrap v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling lexical-util v0.8.1
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]    Compiling hashbrown v0.12.0
[INFO] [stderr]    Compiling lexical-parse-integer v0.8.0
[INFO] [stderr]    Compiling lexical-write-integer v0.8.0
[INFO] [stderr]    Compiling lexical-parse-float v0.8.2
[INFO] [stderr]    Compiling lexical-write-float v0.8.2
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling lexical-core v0.8.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling bytemuck_derive v1.0.1
[INFO] [stderr]    Compiling multiversion-macros v0.6.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling bytemuck v1.7.3
[INFO] [stderr]    Compiling multiversion v0.6.1
[INFO] [stderr]    Compiling arrow2 v0.9.1
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling polars-arrow v0.19.1
[INFO] [stderr]    Compiling polars-core v0.19.1
[INFO] [stderr]    Compiling polars-io v0.19.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `ScanAggregation`
[INFO] [stdout]  --> src/aggregations.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum ScanAggregation {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `finish`
[INFO] [stdout]   --> src/aggregations.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub(crate) fn finish(&self, df: &DataFrame) -> Result<Series> {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `polars-core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name polars_core --edition=2021 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/polars-core-0.19.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="private"' -C metadata=4030063bdf7ce7b0 -C extra-filename=-4030063bdf7ce7b0 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ahash=/opt/rustwide/target/debug/deps/libahash-f73c760339900239.rmeta --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-ea72fa2040392513.rmeta --extern arrow=/opt/rustwide/target/debug/deps/libarrow2-e57ca69fbb8b9cb2.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-45eafe9617607b34.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-02ff0d0fbc57b9b4.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-ab2e3d1032d3af7c.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-1083a58fe8e257ec.rmeta --extern polars_arrow=/opt/rustwide/target/debug/deps/libpolars_arrow-99fe7f22758e1e5e.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-2e94ed32e0278482.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-062de57267eb5cb9.rmeta --extern unsafe_unwrap=/opt/rustwide/target/debug/deps/libunsafe_unwrap-d29eb38bd02e2a4d.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "3e7dcc5639ab47771c9eb66709266d270ebd6905457920fecc6adec936dae816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e7dcc5639ab47771c9eb66709266d270ebd6905457920fecc6adec936dae816", kill_on_drop: false }`
[INFO] [stdout] 3e7dcc5639ab47771c9eb66709266d270ebd6905457920fecc6adec936dae816