[INFO] cloning repository https://github.com/Windfisch/arpfisch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Windfisch/arpfisch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Farpfisch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Farpfisch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54303b30c7e79375a1e5b4366f80fc2dc7347e1b
[INFO] checking Windfisch/arpfisch against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Farpfisch" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Windfisch/arpfisch on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Windfisch/arpfisch
[INFO] finished tweaking git repo https://github.com/Windfisch/arpfisch
[INFO] tweaked toml for git repo https://github.com/Windfisch/arpfisch written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Windfisch/arpfisch already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", 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] 9a82b8d8542f75739899be328d4b25862cf61ce187116ead54938f2f40d6955f
[INFO] running `Command { std: "docker" "start" "-a" "9a82b8d8542f75739899be328d4b25862cf61ce187116ead54938f2f40d6955f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a82b8d8542f75739899be328d4b25862cf61ce187116ead54938f2f40d6955f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a82b8d8542f75739899be328d4b25862cf61ce187116ead54938f2f40d6955f", kill_on_drop: false }`
[INFO] [stdout] 9a82b8d8542f75739899be328d4b25862cf61ce187116ead54938f2f40d6955f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 3be59921768e11797b67deb4bafef8fc5e29b08541f5529f6436b71cd0d0c24f
[INFO] running `Command { std: "docker" "start" "-a" "3be59921768e11797b67deb4bafef8fc5e29b08541f5529f6436b71cd0d0c24f", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling heapless v0.6.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking jack-sys v0.2.0 (https://github.com/Windfisch/rust-jack#d77752bf)
[INFO] [stderr]     Checking jack v0.6.2 (https://github.com/Windfisch/rust-jack#d77752bf)
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking arpfisch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Blink`
[INFO] [stdout]   --> src/grid_controllers/mod.rs:44:2
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Blink(Color),
[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] [stdout] warning: variant is never constructed: `Blink`
[INFO] [stdout]   --> src/grid_controllers/mod.rs:44:2
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Blink(Color),
[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 8.91s
[INFO] running `Command { std: "docker" "inspect" "3be59921768e11797b67deb4bafef8fc5e29b08541f5529f6436b71cd0d0c24f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3be59921768e11797b67deb4bafef8fc5e29b08541f5529f6436b71cd0d0c24f", kill_on_drop: false }`
[INFO] [stdout] 3be59921768e11797b67deb4bafef8fc5e29b08541f5529f6436b71cd0d0c24f