[INFO] cloning repository https://github.com/tuzz/superpermutation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tuzz/superpermutation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Fsuperpermutation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Fsuperpermutation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 01c6553b5898024fcdff77e0473a37d28b9e9b1d
[INFO] checking tuzz/superpermutation against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Fsuperpermutation" "/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/tuzz/superpermutation on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tuzz/superpermutation
[INFO] finished tweaking git repo https://github.com/tuzz/superpermutation
[INFO] tweaked toml for git repo https://github.com/tuzz/superpermutation written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/tuzz/superpermutation already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--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-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 625d616f34757df2e9bb9ac8e86de7f21b36e57af5d2e0ef2b97558f0673cc6f
[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" "625d616f34757df2e9bb9ac8e86de7f21b36e57af5d2e0ef2b97558f0673cc6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "625d616f34757df2e9bb9ac8e86de7f21b36e57af5d2e0ef2b97558f0673cc6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "625d616f34757df2e9bb9ac8e86de7f21b36e57af5d2e0ef2b97558f0673cc6f", kill_on_drop: false }`
[INFO] [stdout] 625d616f34757df2e9bb9ac8e86de7f21b36e57af5d2e0ef2b97558f0673cc6f
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0281b239af653e62f0921438939bf4ea02620149786d23f7c1e140290a7e243d
[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" "0281b239af653e62f0921438939bf4ea02620149786d23f7c1e140290a7e243d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling flate2-crc v0.1.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking lehmer v2.0.0
[INFO] [stderr]     Checking bucket_queue v2.0.0
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]     Checking bit-set v0.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]    Compiling syn v0.15.21
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]     Checking flate2 v1.0.5
[INFO] [stderr]     Checking serde_bytes v0.10.4
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking leaps-and-bounds v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.06s
[INFO] running `Command { std: "docker" "inspect" "0281b239af653e62f0921438939bf4ea02620149786d23f7c1e140290a7e243d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0281b239af653e62f0921438939bf4ea02620149786d23f7c1e140290a7e243d", kill_on_drop: false }`
[INFO] [stdout] 0281b239af653e62f0921438939bf4ea02620149786d23f7c1e140290a7e243d