[INFO] cloning repository https://github.com/aksharpatel47/algorithms-and-data-structures
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aksharpatel47/algorithms-and-data-structures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faksharpatel47%2Falgorithms-and-data-structures"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faksharpatel47%2Falgorithms-and-data-structures'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 776ea82bfc006d7f9b6f088b267feab59dd8c2e7
[INFO] checking aksharpatel47/algorithms-and-data-structures against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faksharpatel47%2Falgorithms-and-data-structures" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aksharpatel47/algorithms-and-data-structures on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aksharpatel47/algorithms-and-data-structures
[INFO] finished tweaking git repo https://github.com/aksharpatel47/algorithms-and-data-structures
[INFO] tweaked toml for git repo https://github.com/aksharpatel47/algorithms-and-data-structures written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/aksharpatel47/algorithms-and-data-structures already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] ae964094b80a48e393395095716b17f85cfb712cec02103c85aca9e70caf42e8
[INFO] running `"docker" "start" "-a" "ae964094b80a48e393395095716b17f85cfb712cec02103c85aca9e70caf42e8"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/sorting/insertion_sort/mod.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let mut key = values[i];
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/sorting/insertion_sort/mod.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let mut key = values[i];
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.54s
[INFO] running `"docker" "inspect" "ae964094b80a48e393395095716b17f85cfb712cec02103c85aca9e70caf42e8"`
[INFO] running `"docker" "rm" "-f" "ae964094b80a48e393395095716b17f85cfb712cec02103c85aca9e70caf42e8"`
[INFO] [stdout] ae964094b80a48e393395095716b17f85cfb712cec02103c85aca9e70caf42e8