[INFO] fetching crate polars-core 0.15.1...
[INFO] checking polars-core-0.15.1 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate polars-core 0.15.1 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate polars-core 0.15.1 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polars-core 0.15.1
[INFO] finished tweaking crates.io crate polars-core 0.15.1
[INFO] tweaked toml for crates.io crate polars-core 0.15.1 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aea0139aabb26d21e6c2a19c0fc789a9c265eb935277b4503a22eb0c905b632a
[INFO] running `Command { std: "docker" "start" "-a" "aea0139aabb26d21e6c2a19c0fc789a9c265eb935277b4503a22eb0c905b632a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aea0139aabb26d21e6c2a19c0fc789a9c265eb935277b4503a22eb0c905b632a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aea0139aabb26d21e6c2a19c0fc789a9c265eb935277b4503a22eb0c905b632a", kill_on_drop: false }`
[INFO] [stdout] aea0139aabb26d21e6c2a19c0fc789a9c265eb935277b4503a22eb0c905b632a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68e85c244f7d8ecc57432b9f82ad43974870450f1f59ff005200f882891cd597
[INFO] running `Command { std: "docker" "start" "-a" "68e85c244f7d8ecc57432b9f82ad43974870450f1f59ff005200f882891cd597", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
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[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.25
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[INFO] [stderr]     Checking itertools v0.10.1
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[INFO] [stderr]    Compiling multiversion-macros v0.6.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking multiversion v0.6.1
[INFO] [stderr]     Checking arrow v5.2.0
[INFO] [stderr]     Checking polars-arrow v0.15.1
[INFO] [stderr]     Checking polars-core v0.15.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::prelude::*`
[INFO] [stdout]    --> src/chunked_array/ops/sort.rs:496:9
[INFO] [stdout]     |
[INFO] [stdout] 496 |     use crate::prelude::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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: 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] 
[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] [stdout] warning: 3 warnings emitted
[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] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.06s
[INFO] running `Command { std: "docker" "inspect" "68e85c244f7d8ecc57432b9f82ad43974870450f1f59ff005200f882891cd597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68e85c244f7d8ecc57432b9f82ad43974870450f1f59ff005200f882891cd597", kill_on_drop: false }`
[INFO] [stdout] 68e85c244f7d8ecc57432b9f82ad43974870450f1f59ff005200f882891cd597