[INFO] fetching crate polars-core 0.15.0...
[INFO] testing polars-core-0.15.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate polars-core 0.15.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate polars-core 0.15.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polars-core 0.15.0
[INFO] finished tweaking crates.io crate polars-core 0.15.0
[INFO] tweaked toml for crates.io crate polars-core 0.15.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30aaabcee1aa7d79ad70e7bdfb3534065043a56f84761dbf561ece4be5a8b255
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "30aaabcee1aa7d79ad70e7bdfb3534065043a56f84761dbf561ece4be5a8b255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30aaabcee1aa7d79ad70e7bdfb3534065043a56f84761dbf561ece4be5a8b255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30aaabcee1aa7d79ad70e7bdfb3534065043a56f84761dbf561ece4be5a8b255", kill_on_drop: false }`
[INFO] [stdout] 30aaabcee1aa7d79ad70e7bdfb3534065043a56f84761dbf561ece4be5a8b255
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abc5ab97bcf77a73b407d83c227ae67e66f16c6d5487abe6c17a9986b53ed16e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "abc5ab97bcf77a73b407d83c227ae67e66f16c6d5487abe6c17a9986b53ed16e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling unsafe_unwrap v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling multiversion-macros v0.6.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling multiversion v0.6.1
[INFO] [stderr]    Compiling arrow v5.1.0
[INFO] [stderr]    Compiling polars-arrow v0.15.0
[INFO] [stderr]    Compiling polars-core v0.15.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `series::arithmetic::coerce_lhs_rhs`
[INFO] [stdout]   --> src/series/mod.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 | use crate::{series::arithmetic::coerce_lhs_rhs, POOL};
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `align_chunks_ternary`
[INFO] [stdout]    --> src/utils.rs:758:15
[INFO] [stdout]     |
[INFO] [stdout] 758 | pub(crate) fn align_chunks_ternary<'a, A, B, C>(
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ordering_other_columns`
[INFO] [stdout]    --> src/chunked_array/ops/sort.rs:297:4
[INFO] [stdout]     |
[INFO] [stdout] 297 | fn ordering_other_columns<'a>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `polars-core`; 3 warnings emitted
[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="private"' --cfg 'feature="regex"' --cfg 'feature="temporal"' -C metadata=8094bf05d3a7bfa5 -C extra-filename=-8094bf05d3a7bfa5 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ahash=/opt/rustwide/target/debug/deps/libahash-b5442a9f8e9a2c62.rmeta --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-b5a17cdd882001a9.rmeta --extern arrow=/opt/rustwide/target/debug/deps/libarrow-9613ad0c3efde9f6.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-aa5544ee49fb91f3.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-c2f7ac3693a06741.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-ae4a8260a0a356f1.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-e92083d5a39a8b50.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-a73d86b396e259ea.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-c71919f527130ee7.rmeta --extern polars_arrow=/opt/rustwide/target/debug/deps/libpolars_arrow-32de0ab69670f5c8.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-6e60e86c1ae888e0.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-a3872ea1c1199fca.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-4eed1e39eef3bf85.rmeta --extern unsafe_unwrap=/opt/rustwide/target/debug/deps/libunsafe_unwrap-67faf3bf89a173ae.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "abc5ab97bcf77a73b407d83c227ae67e66f16c6d5487abe6c17a9986b53ed16e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abc5ab97bcf77a73b407d83c227ae67e66f16c6d5487abe6c17a9986b53ed16e", kill_on_drop: false }`
[INFO] [stdout] abc5ab97bcf77a73b407d83c227ae67e66f16c6d5487abe6c17a9986b53ed16e
