[INFO] fetching crate polars 0.14.6...
[INFO] testing polars-0.14.6 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate polars 0.14.6 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate polars 0.14.6 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polars 0.14.6
[INFO] finished tweaking crates.io crate polars 0.14.6
[INFO] tweaked toml for crates.io crate polars 0.14.6 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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] ff3387eb9444d8126ced4fcba941b9b51a9015ca35b273455e5336cbfc5f9080
[INFO] running `Command { std: "docker" "start" "-a" "ff3387eb9444d8126ced4fcba941b9b51a9015ca35b273455e5336cbfc5f9080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff3387eb9444d8126ced4fcba941b9b51a9015ca35b273455e5336cbfc5f9080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff3387eb9444d8126ced4fcba941b9b51a9015ca35b273455e5336cbfc5f9080", kill_on_drop: false }`
[INFO] [stdout] ff3387eb9444d8126ced4fcba941b9b51a9015ca35b273455e5336cbfc5f9080
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58bf4b40b999767e29629efa940e99c297c01f8040370f3c05a8245ae1b974eb
[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" "58bf4b40b999767e29629efa940e99c297c01f8040370f3c05a8245ae1b974eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling encode_unicode v0.3.6
[INFO] [stderr]    Compiling fast-float v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling memmap2 v0.2.3
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling lexical v5.2.2
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling multiversion-macros v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling flatbuffers v0.8.4
[INFO] [stderr]    Compiling multiversion v0.6.1
[INFO] [stderr]    Compiling arrow v4.4.0
[INFO] [stderr]    Compiling polars-arrow v0.14.7
[INFO] [stderr]    Compiling polars-core v0.14.7
[INFO] [stderr]    Compiling polars-io v0.14.7
[INFO] [stderr]    Compiling polars-lazy v0.14.6
[INFO] [stderr]    Compiling polars v0.14.6 (/opt/rustwide/workdir)
[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 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/polars-core-0.14.7/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="chrono"' --cfg 'feature="docs"' --cfg 'feature="dtype-date32"' --cfg 'feature="dtype-date64"' --cfg 'feature="lazy"' --cfg 'feature="performant"' --cfg 'feature="plain_fmt"' --cfg 'feature="prettytable-rs"' --cfg 'feature="private"' --cfg 'feature="regex"' --cfg 'feature="sort_multiple"' --cfg 'feature="temporal"' --cfg 'feature="zip_with"' -C metadata=087f31f1c87eb35f -C extra-filename=-087f31f1c87eb35f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ahash=/opt/rustwide/target/debug/deps/libahash-f6904e3fd9f685c5.rmeta --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-e183bb2174e494e4.rmeta --extern arrow=/opt/rustwide/target/debug/deps/libarrow-a9430525e188e3d5.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-dbcfa671768889ba.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-1703445ec48e5b53.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-78c60b588458e652.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-f67718dd40129317.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-d061f39f1a44c59b.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-02aeb857270eb57b.rmeta --extern polars_arrow=/opt/rustwide/target/debug/deps/libpolars_arrow-10480bd337cd3ce6.rmeta --extern prettytable=/opt/rustwide/target/debug/deps/libprettytable-cea8443239912dbd.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-ca6b2c9513b376c5.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-14edb7dff9ca13a5.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-b8f30a2924b54b1e.rmeta --extern unsafe_unwrap=/opt/rustwide/target/debug/deps/libunsafe_unwrap-cd612ae32ae7eacc.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "58bf4b40b999767e29629efa940e99c297c01f8040370f3c05a8245ae1b974eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58bf4b40b999767e29629efa940e99c297c01f8040370f3c05a8245ae1b974eb", kill_on_drop: false }`
[INFO] [stdout] 58bf4b40b999767e29629efa940e99c297c01f8040370f3c05a8245ae1b974eb