[INFO] cloning repository https://github.com/ajmalsiddiqui/list-sync
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajmalsiddiqui/list-sync" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajmalsiddiqui%2Flist-sync", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajmalsiddiqui%2Flist-sync'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2de537b37d34c07bb4273b76f9c96249e20b27e8
[INFO] checking ajmalsiddiqui/list-sync against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajmalsiddiqui%2Flist-sync" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ajmalsiddiqui/list-sync on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ajmalsiddiqui/list-sync
[INFO] finished tweaking git repo https://github.com/ajmalsiddiqui/list-sync
[INFO] tweaked toml for git repo https://github.com/ajmalsiddiqui/list-sync written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ajmalsiddiqui/list-sync already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ca3a24c01da5c31ab6d88308da571ecee4e953d8f58ff6bd5ef2ed5754b58e7
[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" "1ca3a24c01da5c31ab6d88308da571ecee4e953d8f58ff6bd5ef2ed5754b58e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ca3a24c01da5c31ab6d88308da571ecee4e953d8f58ff6bd5ef2ed5754b58e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ca3a24c01da5c31ab6d88308da571ecee4e953d8f58ff6bd5ef2ed5754b58e7", kill_on_drop: false }`
[INFO] [stdout] 1ca3a24c01da5c31ab6d88308da571ecee4e953d8f58ff6bd5ef2ed5754b58e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57082374440ffa4033074dacecf4ea1e917a639f97cb16442fb6f7e026949884
[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" "57082374440ffa4033074dacecf4ea1e917a639f97cb16442fb6f7e026949884", kill_on_drop: false }`
[INFO] [stderr]     Checking list-sync v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `levenshtein_naive`
[INFO] [stdout]   --> src/levenshtein.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn levenshtein_naive<T>(i1: &[T], i2: &[T]) -> usize
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `levenshtein_memoization`
[INFO] [stdout]   --> src/levenshtein.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub fn levenshtein_memoization<T>(i1: &[T], i2: &[T]) -> usize
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "57082374440ffa4033074dacecf4ea1e917a639f97cb16442fb6f7e026949884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57082374440ffa4033074dacecf4ea1e917a639f97cb16442fb6f7e026949884", kill_on_drop: false }`
[INFO] [stdout] 57082374440ffa4033074dacecf4ea1e917a639f97cb16442fb6f7e026949884