[INFO] cloning repository https://github.com/erkan80898/rust_sort_visualizer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erkan80898/rust_sort_visualizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferkan80898%2Frust_sort_visualizer"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferkan80898%2Frust_sort_visualizer'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bc1db62c991f0190ffa31184fd7b5367310a53fc
[INFO] checking erkan80898/rust_sort_visualizer against master#914adf04af1c1a984707f778da3d04590c03d144 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferkan80898%2Frust_sort_visualizer" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/erkan80898/rust_sort_visualizer on toolchain 914adf04af1c1a984707f778da3d04590c03d144
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/erkan80898/rust_sort_visualizer
[INFO] finished tweaking git repo https://github.com/erkan80898/rust_sort_visualizer
[INFO] tweaked toml for git repo https://github.com/erkan80898/rust_sort_visualizer written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/erkan80898/rust_sort_visualizer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b70b0158e9c8f4c50ddadabcf2f27e41ec5570ed6ab854f92cc046c204bc8804
[INFO] running `"docker" "start" "-a" "b70b0158e9c8f4c50ddadabcf2f27e41ec5570ed6ab854f92cc046c204bc8804"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
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[INFO] [stderr] warning: variable `sort` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let sort;
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_sort` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `sort` is never read
[INFO] [stderr]    --> src/main.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 | ...                   sort = x;
[INFO] [stderr]     |                       ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `sort` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let sort;
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_sort` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `sort` is never read
[INFO] [stderr]    --> src/main.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 | ...                   sort = x;
[INFO] [stderr]     |                       ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 43s
[INFO] running `"docker" "inspect" "b70b0158e9c8f4c50ddadabcf2f27e41ec5570ed6ab854f92cc046c204bc8804"`
[INFO] running `"docker" "rm" "-f" "b70b0158e9c8f4c50ddadabcf2f27e41ec5570ed6ab854f92cc046c204bc8804"`
[INFO] [stdout] b70b0158e9c8f4c50ddadabcf2f27e41ec5570ed6ab854f92cc046c204bc8804