[INFO] cloning repository https://github.com/Mikkelhauvgaard/rust_algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mikkelhauvgaard/rust_algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMikkelhauvgaard%2Frust_algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMikkelhauvgaard%2Frust_algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9eb6deb1549a5e8efe90f7a0433dd7b1b7439224
[INFO] checking Mikkelhauvgaard/rust_algorithms against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMikkelhauvgaard%2Frust_algorithms" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Mikkelhauvgaard/rust_algorithms on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Mikkelhauvgaard/rust_algorithms
[INFO] finished tweaking git repo https://github.com/Mikkelhauvgaard/rust_algorithms
[INFO] tweaked toml for git repo https://github.com/Mikkelhauvgaard/rust_algorithms written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Mikkelhauvgaard/rust_algorithms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89948f4d38d5d6e56c8b928e2b8ef9fdd84d8f54c039ae6441586a24441ad7a5
[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" "89948f4d38d5d6e56c8b928e2b8ef9fdd84d8f54c039ae6441586a24441ad7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89948f4d38d5d6e56c8b928e2b8ef9fdd84d8f54c039ae6441586a24441ad7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89948f4d38d5d6e56c8b928e2b8ef9fdd84d8f54c039ae6441586a24441ad7a5", kill_on_drop: false }`
[INFO] [stdout] 89948f4d38d5d6e56c8b928e2b8ef9fdd84d8f54c039ae6441586a24441ad7a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] d1861cb8ed2f688998a13c7a9e6a07a9bb89c08af9768426100fe074f57da9ab
[INFO] running `Command { std: "docker" "start" "-a" "d1861cb8ed2f688998a13c7a9e6a07a9bb89c08af9768426100fe074f57da9ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking sorting_bench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.37s
[INFO] running `Command { std: "docker" "inspect" "d1861cb8ed2f688998a13c7a9e6a07a9bb89c08af9768426100fe074f57da9ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1861cb8ed2f688998a13c7a9e6a07a9bb89c08af9768426100fe074f57da9ab", kill_on_drop: false }`
[INFO] [stdout] d1861cb8ed2f688998a13c7a9e6a07a9bb89c08af9768426100fe074f57da9ab