[INFO] cloning repository https://github.com/maartins/mazing-kruskal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maartins/mazing-kruskal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaartins%2Fmazing-kruskal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaartins%2Fmazing-kruskal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4687b3c24c80372768bd2b6c950e80e130b889cc
[INFO] checking maartins/mazing-kruskal against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaartins%2Fmazing-kruskal" "/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/maartins/mazing-kruskal on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maartins/mazing-kruskal
[INFO] finished tweaking git repo https://github.com/maartins/mazing-kruskal
[INFO] tweaked toml for git repo https://github.com/maartins/mazing-kruskal written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/maartins/mazing-kruskal already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a73c7653d6cd8a6b65d08c6780676d3a8be5b6f560b5066f7649d56b807606a
[INFO] running `Command { std: "docker" "start" "-a" "3a73c7653d6cd8a6b65d08c6780676d3a8be5b6f560b5066f7649d56b807606a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a73c7653d6cd8a6b65d08c6780676d3a8be5b6f560b5066f7649d56b807606a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a73c7653d6cd8a6b65d08c6780676d3a8be5b6f560b5066f7649d56b807606a", kill_on_drop: false }`
[INFO] [stdout] 3a73c7653d6cd8a6b65d08c6780676d3a8be5b6f560b5066f7649d56b807606a
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 272db1ae04f09ab128733cd5456ea56705cc8c3b1049c42a5af1d0ff7328e3cb
[INFO] running `Command { std: "docker" "start" "-a" "272db1ae04f09ab128733cd5456ea56705cc8c3b1049c42a5af1d0ff7328e3cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking elapsed v0.1.2
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking mazing_kruskal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.75s
[INFO] running `Command { std: "docker" "inspect" "272db1ae04f09ab128733cd5456ea56705cc8c3b1049c42a5af1d0ff7328e3cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "272db1ae04f09ab128733cd5456ea56705cc8c3b1049c42a5af1d0ff7328e3cb", kill_on_drop: false }`
[INFO] [stdout] 272db1ae04f09ab128733cd5456ea56705cc8c3b1049c42a5af1d0ff7328e3cb