[INFO] cloning repository https://github.com/huntj88/bubble-sort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/huntj88/bubble-sort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuntj88%2Fbubble-sort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuntj88%2Fbubble-sort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81252592a609d90ba2d5e9ce2b14daccd8365581
[INFO] checking huntj88/bubble-sort against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhuntj88%2Fbubble-sort" "/workspace/builds/worker-96/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-96/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/huntj88/bubble-sort on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/huntj88/bubble-sort
[INFO] finished tweaking git repo https://github.com/huntj88/bubble-sort
[INFO] tweaked toml for git repo https://github.com/huntj88/bubble-sort written to /workspace/builds/worker-96/source/Cargo.toml
[INFO] crate git repo https://github.com/huntj88/bubble-sort already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a16bd5009efce7b51546c5a6f7def61f6da6c1f73dc284bbda3485328b4d08cd
[INFO] running `Command { std: "docker" "start" "-a" "a16bd5009efce7b51546c5a6f7def61f6da6c1f73dc284bbda3485328b4d08cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a16bd5009efce7b51546c5a6f7def61f6da6c1f73dc284bbda3485328b4d08cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a16bd5009efce7b51546c5a6f7def61f6da6c1f73dc284bbda3485328b4d08cd", kill_on_drop: false }`
[INFO] [stdout] a16bd5009efce7b51546c5a6f7def61f6da6c1f73dc284bbda3485328b4d08cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30e441fb6736bb1217b467e5d8f12253df89ba263e55db623733540075d73701
[INFO] running `Command { std: "docker" "start" "-a" "30e441fb6736bb1217b467e5d8f12253df89ba263e55db623733540075d73701", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking bubble-sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::clone::Clone`
[INFO] [stdout]  --> src/bubble_sort.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::clone::Clone;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ordering`
[INFO] [stdout]  --> src/bubble_sort.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::{Ord, Ordering};
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::clone::Clone`
[INFO] [stdout]  --> src/bubble_sort.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::clone::Clone;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ordering`
[INFO] [stdout]  --> src/bubble_sort.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::{Ord, Ordering};
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bubble_sort.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) fn sort<T: Ord>(mut list: &mut [T]) {
[INFO] [stdout]   |                            ----^^^^
[INFO] [stdout]   |                            |
[INFO] [stdout]   |                            help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bubble_sort.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) fn sort<T: Ord>(mut list: &mut [T]) {
[INFO] [stdout]   |                            ----^^^^
[INFO] [stdout]   |                            |
[INFO] [stdout]   |                            help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "30e441fb6736bb1217b467e5d8f12253df89ba263e55db623733540075d73701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30e441fb6736bb1217b467e5d8f12253df89ba263e55db623733540075d73701", kill_on_drop: false }`
[INFO] [stdout] 30e441fb6736bb1217b467e5d8f12253df89ba263e55db623733540075d73701