[INFO] cloning repository https://github.com/leonmak/rust-checkers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leonmak/rust-checkers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleonmak%2Frust-checkers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleonmak%2Frust-checkers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1531d1c0ffea59bd2e641ed8f24faa13b9596cda
[INFO] checking leonmak/rust-checkers against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleonmak%2Frust-checkers" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leonmak/rust-checkers on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leonmak/rust-checkers
[INFO] finished tweaking git repo https://github.com/leonmak/rust-checkers
[INFO] tweaked toml for git repo https://github.com/leonmak/rust-checkers written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/leonmak/rust-checkers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f70de18a17ce0b400caf41aa94344eea370235249122dc2fe77b9a75b678c89b
[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" "f70de18a17ce0b400caf41aa94344eea370235249122dc2fe77b9a75b678c89b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f70de18a17ce0b400caf41aa94344eea370235249122dc2fe77b9a75b678c89b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f70de18a17ce0b400caf41aa94344eea370235249122dc2fe77b9a75b678c89b", kill_on_drop: false }`
[INFO] [stdout] f70de18a17ce0b400caf41aa94344eea370235249122dc2fe77b9a75b678c89b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa31f7cc1d30ff2dfb3a8a1f86abb5725eb43733485bf6ca43699e36aaed5db9
[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" "fa31f7cc1d30ff2dfb3a8a1f86abb5725eb43733485bf6ca43699e36aaed5db9", kill_on_drop: false }`
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking mut_static v5.0.0
[INFO] [stderr]     Checking rustycheckers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `board::Coordinate`
[INFO] [stdout]   --> src/board.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     use board::Coordinate;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `get_piece`, `move_piece`
[INFO] [stdout]  --> src/test.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use ::{get_piece, move_piece};
[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 1.18s
[INFO] running `Command { std: "docker" "inspect" "fa31f7cc1d30ff2dfb3a8a1f86abb5725eb43733485bf6ca43699e36aaed5db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa31f7cc1d30ff2dfb3a8a1f86abb5725eb43733485bf6ca43699e36aaed5db9", kill_on_drop: false }`
[INFO] [stdout] fa31f7cc1d30ff2dfb3a8a1f86abb5725eb43733485bf6ca43699e36aaed5db9