[INFO] fetching crate polars-core 0.13.3...
[INFO] building polars-core-0.13.3 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate polars-core 0.13.3 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate polars-core 0.13.3 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polars-core 0.13.3
[INFO] finished tweaking crates.io crate polars-core 0.13.3
[INFO] tweaked toml for crates.io crate polars-core 0.13.3 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6832b91eafa1719af1e65be820847af8609a35f31ab21d7de210b3fb9168618f
[INFO] running `Command { std: "docker" "start" "-a" "6832b91eafa1719af1e65be820847af8609a35f31ab21d7de210b3fb9168618f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6832b91eafa1719af1e65be820847af8609a35f31ab21d7de210b3fb9168618f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6832b91eafa1719af1e65be820847af8609a35f31ab21d7de210b3fb9168618f", kill_on_drop: false }`
[INFO] [stdout] 6832b91eafa1719af1e65be820847af8609a35f31ab21d7de210b3fb9168618f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3c2f60b630a63e149210eab368e034df69b6b38f3e72826dd85b18f02359d22d
[INFO] running `Command { std: "docker" "start" "-a" "3c2f60b630a63e149210eab368e034df69b6b38f3e72826dd85b18f02359d22d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling unsafe_unwrap v0.1.0
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling multiversion-macros v0.6.1
[INFO] [stderr]    Compiling thiserror v1.0.25
[INFO] [stderr]    Compiling flatbuffers v0.8.4
[INFO] [stderr]    Compiling multiversion v0.6.1
[INFO] [stderr]    Compiling arrow v4.1.0
[INFO] [stderr]    Compiling polars-arrow v0.13.4
[INFO] [stderr]    Compiling polars-core v0.13.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `max_n_rows`
[INFO] [stdout]    --> src/fmt.rs:371:13
[INFO] [stdout]     |
[INFO] [stdout] 371 |         let max_n_rows = std::env::var("POLARS_FMT_MAX_ROWS")
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_n_rows`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `prepare_row`
[INFO] [stdout]    --> src/fmt.rs:332:4
[INFO] [stdout]     |
[INFO] [stdout] 332 | fn prepare_row(row: Vec<AnyValue>, n_first: usize, n_last: usize) -> Vec<String> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="chrono"' --cfg 'feature="default"' --cfg 'feature="docs"' --cfg 'feature="performant"' --cfg 'feature="regex"' --cfg 'feature="temporal"' -C metadata=5371d3ddae044c25 -C extra-filename=-5371d3ddae044c25 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ahash=/opt/rustwide/target/debug/deps/libahash-e82710064f70c6a6.rmeta --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-d556324edbc6a24d.rmeta --extern arrow=/opt/rustwide/target/debug/deps/libarrow-48b591a88c124b93.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-9f3faac5097f3b71.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-bd15aa081ab0d260.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-36728487e4ae6d75.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-ff2d4c059a61c830.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-fe77dffdc770c77c.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-071ff090805dcccc.rmeta --extern polars_arrow=/opt/rustwide/target/debug/deps/libpolars_arrow-86dfa0f0eb50d2dd.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-c07c7c975d65ff89.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-304a182fb235bf3f.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-694a5e12534479a1.rmeta --extern unsafe_unwrap=/opt/rustwide/target/debug/deps/libunsafe_unwrap-044190c91c387c8a.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "3c2f60b630a63e149210eab368e034df69b6b38f3e72826dd85b18f02359d22d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c2f60b630a63e149210eab368e034df69b6b38f3e72826dd85b18f02359d22d", kill_on_drop: false }`
[INFO] [stdout] 3c2f60b630a63e149210eab368e034df69b6b38f3e72826dd85b18f02359d22d
