[INFO] cloning repository https://github.com/Trolley33/rust-hashmap
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Trolley33/rust-hashmap" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrolley33%2Frust-hashmap", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrolley33%2Frust-hashmap'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7686705dffaf6fbd6f86e29f5422996f8b31d2d0
[INFO] checking Trolley33/rust-hashmap against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrolley33%2Frust-hashmap" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Trolley33/rust-hashmap on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Trolley33/rust-hashmap
[INFO] finished tweaking git repo https://github.com/Trolley33/rust-hashmap
[INFO] tweaked toml for git repo https://github.com/Trolley33/rust-hashmap written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Trolley33/rust-hashmap already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acf601afc3493ef6c59290ab1f1d3ee80e26e2689c6d046f7799ffbfa4688f8e
[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" "acf601afc3493ef6c59290ab1f1d3ee80e26e2689c6d046f7799ffbfa4688f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acf601afc3493ef6c59290ab1f1d3ee80e26e2689c6d046f7799ffbfa4688f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acf601afc3493ef6c59290ab1f1d3ee80e26e2689c6d046f7799ffbfa4688f8e", kill_on_drop: false }`
[INFO] [stdout] acf601afc3493ef6c59290ab1f1d3ee80e26e2689c6d046f7799ffbfa4688f8e
[INFO] running `Command { std: "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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1d452856a935e87e4e77eacf19c2c3b1f771fd1fd99b34936f792e067916ebb0
[INFO] running `Command { std: "docker" "start" "-a" "1d452856a935e87e4e77eacf19c2c3b1f771fd1fd99b34936f792e067916ebb0", kill_on_drop: false }`
[INFO] [stderr]     Checking hashmap-simple v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]   --> src/lib.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn remove(&mut self, key: &K) -> Option<V> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "1d452856a935e87e4e77eacf19c2c3b1f771fd1fd99b34936f792e067916ebb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d452856a935e87e4e77eacf19c2c3b1f771fd1fd99b34936f792e067916ebb0", kill_on_drop: false }`
[INFO] [stdout] 1d452856a935e87e4e77eacf19c2c3b1f771fd1fd99b34936f792e067916ebb0