[INFO] fetching crate polars-io 0.17.0...
[INFO] testing polars-io-0.17.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate polars-io 0.17.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate polars-io 0.17.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polars-io 0.17.0
[INFO] finished tweaking crates.io crate polars-io 0.17.0
[INFO] tweaked toml for crates.io crate polars-io 0.17.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5447dd70f090dd8dbfd2f7a3b3892d4c0ae7d3a81b7d5854f44f47bfcc9ed92e
[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" "5447dd70f090dd8dbfd2f7a3b3892d4c0ae7d3a81b7d5854f44f47bfcc9ed92e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5447dd70f090dd8dbfd2f7a3b3892d4c0ae7d3a81b7d5854f44f47bfcc9ed92e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5447dd70f090dd8dbfd2f7a3b3892d4c0ae7d3a81b7d5854f44f47bfcc9ed92e", kill_on_drop: false }`
[INFO] [stdout] 5447dd70f090dd8dbfd2f7a3b3892d4c0ae7d3a81b7d5854f44f47bfcc9ed92e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73c039d730d6eac77cec9d4bb4c1352726743f1db7dbe683e84eae334b4ace7d
[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" "73c039d730d6eac77cec9d4bb4c1352726743f1db7dbe683e84eae334b4ace7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling hash_hasher v2.0.3
[INFO] [stderr]    Compiling strength_reduce v0.2.3
[INFO] [stderr]    Compiling simdutf8 v0.1.3
[INFO] [stderr]    Compiling anyhow v1.0.47
[INFO] [stderr]    Compiling unsafe_unwrap v0.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling lexical-util v0.8.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-bigint v0.4.3
[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 ahash v0.7.6
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[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 aho-corasick v0.7.18
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling lexical-core v0.8.2
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling multiversion-macros v0.6.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling multiversion v0.6.1
[INFO] [stderr]    Compiling arrow2 v0.7.0
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling polars-arrow v0.17.0
[INFO] [stderr]    Compiling polars-core v0.17.0
[INFO] [stderr]    Compiling polars-io v0.17.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `resolve_homedir`
[INFO] [stdout]  --> src/utils.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn resolve_homedir(path: &Path) -> PathBuf {
[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/lib.rs:166:19
[INFO] [stdout]     |
[INFO] [stdout] 166 |     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=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/polars-core-0.17.0/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="private"' -C metadata=2ff297d95b3f727d -C extra-filename=-2ff297d95b3f727d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ahash=/opt/rustwide/target/debug/deps/libahash-430f0e97dc050720.rmeta --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-f5ccf7dfbfa8eaad.rmeta --extern arrow=/opt/rustwide/target/debug/deps/libarrow2-01abf0fbb5d4d4be.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-0eb9b133cdf97759.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-9ade512e5033c232.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-b33cd6b8ee13db74.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-30e5b1cd2289e6ad.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-f58efe109b9782ba.rmeta --extern polars_arrow=/opt/rustwide/target/debug/deps/libpolars_arrow-7cd2e53976f80984.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-14c9280df2ad45f4.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-d7c4572d54fe1541.rmeta --extern unsafe_unwrap=/opt/rustwide/target/debug/deps/libunsafe_unwrap-2cb032826a6f7e1e.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "73c039d730d6eac77cec9d4bb4c1352726743f1db7dbe683e84eae334b4ace7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73c039d730d6eac77cec9d4bb4c1352726743f1db7dbe683e84eae334b4ace7d", kill_on_drop: false }`
[INFO] [stdout] 73c039d730d6eac77cec9d4bb4c1352726743f1db7dbe683e84eae334b4ace7d