[INFO] cloning repository https://github.com/daraszkrzysztof/hashmap
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daraszkrzysztof/hashmap" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaraszkrzysztof%2Fhashmap", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaraszkrzysztof%2Fhashmap'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c2edd3774c0a46cac4306ca7cd2bcfdfc080eec
[INFO] checking daraszkrzysztof/hashmap against master#1c7b36d4db582cb47513a6c7176baaec1c3346ab for pr-99197
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaraszkrzysztof%2Fhashmap" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/daraszkrzysztof/hashmap on toolchain 1c7b36d4db582cb47513a6c7176baaec1c3346ab
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c7b36d4db582cb47513a6c7176baaec1c3346ab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/daraszkrzysztof/hashmap
[INFO] finished tweaking git repo https://github.com/daraszkrzysztof/hashmap
[INFO] tweaked toml for git repo https://github.com/daraszkrzysztof/hashmap written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/daraszkrzysztof/hashmap already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c7b36d4db582cb47513a6c7176baaec1c3346ab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+1c7b36d4db582cb47513a6c7176baaec1c3346ab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1a2ef414f84055f5403dc28da7d89a5d429f89dfe9026e15470db88149b2485
[INFO] running `Command { std: "docker" "start" "-a" "f1a2ef414f84055f5403dc28da7d89a5d429f89dfe9026e15470db88149b2485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1a2ef414f84055f5403dc28da7d89a5d429f89dfe9026e15470db88149b2485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1a2ef414f84055f5403dc28da7d89a5d429f89dfe9026e15470db88149b2485", kill_on_drop: false }`
[INFO] [stdout] f1a2ef414f84055f5403dc28da7d89a5d429f89dfe9026e15470db88149b2485
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+1c7b36d4db582cb47513a6c7176baaec1c3346ab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fe2193c0c2abd8c803e8b4eddf7016f1dbc277b453e30e2f8838b3f925a8020
[INFO] running `Command { std: "docker" "start" "-a" "1fe2193c0c2abd8c803e8b4eddf7016f1dbc277b453e30e2f8838b3f925a8020", kill_on_drop: false }`
[INFO] [stderr]     Checking hashmap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lib.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         mem::replace(&mut self.buckets, new_buckets);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/lib.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         mem::replace(&mut self.buckets, new_buckets);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "1fe2193c0c2abd8c803e8b4eddf7016f1dbc277b453e30e2f8838b3f925a8020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fe2193c0c2abd8c803e8b4eddf7016f1dbc277b453e30e2f8838b3f925a8020", kill_on_drop: false }`
[INFO] [stdout] 1fe2193c0c2abd8c803e8b4eddf7016f1dbc277b453e30e2f8838b3f925a8020