[INFO] cloning repository https://github.com/rafaignaulin/kruskal_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rafaignaulin/kruskal_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafaignaulin%2Fkruskal_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafaignaulin%2Fkruskal_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8ce24c922f5e69e8898a5c4ebb3f1fa7e649a3a
[INFO] checking rafaignaulin/kruskal_rust against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafaignaulin%2Fkruskal_rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rafaignaulin/kruskal_rust on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rafaignaulin/kruskal_rust
[INFO] finished tweaking git repo https://github.com/rafaignaulin/kruskal_rust
[INFO] tweaked toml for git repo https://github.com/rafaignaulin/kruskal_rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/rafaignaulin/kruskal_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5047a3ac52a0fc0dc370bfeff0acd5f1b739225d959fd9ffddb6e33f61f9199b
[INFO] running `Command { std: "docker" "start" "-a" "5047a3ac52a0fc0dc370bfeff0acd5f1b739225d959fd9ffddb6e33f61f9199b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5047a3ac52a0fc0dc370bfeff0acd5f1b739225d959fd9ffddb6e33f61f9199b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5047a3ac52a0fc0dc370bfeff0acd5f1b739225d959fd9ffddb6e33f61f9199b", kill_on_drop: false }`
[INFO] [stdout] 5047a3ac52a0fc0dc370bfeff0acd5f1b739225d959fd9ffddb6e33f61f9199b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1305f5a2acb631f418565fd77ab29e4f0e0d5454ab5849469e8745fa7e3f6bdd
[INFO] running `Command { std: "docker" "start" "-a" "1305f5a2acb631f418565fd77ab29e4f0e0d5454ab5849469e8745fa7e3f6bdd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking rs-graph v0.19.2
[INFO] [stderr]     Checking kruskal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.97s
[INFO] running `Command { std: "docker" "inspect" "1305f5a2acb631f418565fd77ab29e4f0e0d5454ab5849469e8745fa7e3f6bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1305f5a2acb631f418565fd77ab29e4f0e0d5454ab5849469e8745fa7e3f6bdd", kill_on_drop: false }`
[INFO] [stdout] 1305f5a2acb631f418565fd77ab29e4f0e0d5454ab5849469e8745fa7e3f6bdd