[INFO] fetching crate polars-core 0.13.3... [INFO] checking polars-core-0.13.3 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920 [INFO] extracting crate polars-core 0.13.3 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate polars-core 0.13.3 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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-7/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--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-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b23c3b97553ed04f9fb639eac3733bd0d7b38c1aef4632aa159e39a576f9cae0 [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" "b23c3b97553ed04f9fb639eac3733bd0d7b38c1aef4632aa159e39a576f9cae0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b23c3b97553ed04f9fb639eac3733bd0d7b38c1aef4632aa159e39a576f9cae0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b23c3b97553ed04f9fb639eac3733bd0d7b38c1aef4632aa159e39a576f9cae0", kill_on_drop: false }` [INFO] [stdout] b23c3b97553ed04f9fb639eac3733bd0d7b38c1aef4632aa159e39a576f9cae0 [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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b59ebd0c1e16fb308ab0cc5f6f9d83c02a8ec43a9c1780b0518bec4e5b81aa96 [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" "b59ebd0c1e16fb308ab0cc5f6f9d83c02a8ec43a9c1780b0518bec4e5b81aa96", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Checking hashbrown v0.9.1 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking static_assertions v1.1.0 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Checking 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-iter v0.1.42 [INFO] [stderr] Compiling num-bigint v0.3.2 [INFO] [stderr] Compiling num-rational v0.3.2 [INFO] [stderr] Compiling indexmap v1.6.2 [INFO] [stderr] Compiling num-bigint v0.4.0 [INFO] [stderr] Compiling num-rational v0.4.0 [INFO] [stderr] Compiling ahash v0.7.2 [INFO] [stderr] Checking itertools v0.10.0 [INFO] [stderr] Checking getrandom v0.2.2 [INFO] [stderr] Checking lexical-core v0.7.6 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Compiling thiserror-impl v1.0.24 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking hashbrown v0.11.2 [INFO] [stderr] Checking bstr v0.2.16 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking num-complex v0.3.1 [INFO] [stderr] Checking num-complex v0.4.0 [INFO] [stderr] Checking csv v1.1.6 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking thiserror v1.0.24 [INFO] [stderr] Checking flatbuffers v0.8.4 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking num v0.3.1 [INFO] [stderr] Checking num v0.4.0 [INFO] [stderr] Checking arrow v4.0.0 [INFO] [stderr] Checking polars-arrow v0.13.3 [INFO] [stderr] Checking 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: 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, n_first: usize, n_last: usize) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [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, n_first: usize, n_last: usize) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 58.63s [INFO] running `Command { std: "docker" "inspect" "b59ebd0c1e16fb308ab0cc5f6f9d83c02a8ec43a9c1780b0518bec4e5b81aa96", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b59ebd0c1e16fb308ab0cc5f6f9d83c02a8ec43a9c1780b0518bec4e5b81aa96", kill_on_drop: false }` [INFO] [stdout] b59ebd0c1e16fb308ab0cc5f6f9d83c02a8ec43a9c1780b0518bec4e5b81aa96