[INFO] cloning repository https://github.com/mclytar/mammoth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mclytar/mammoth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmclytar%2Fmammoth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmclytar%2Fmammoth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98e686fbc59db98db206ddb665060d33c03a7938
[INFO] checking mclytar/mammoth against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmclytar%2Fmammoth" "/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/mclytar/mammoth 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/mclytar/mammoth
[INFO] finished tweaking git repo https://github.com/mclytar/mammoth
[INFO] tweaked toml for git repo https://github.com/mclytar/mammoth written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mclytar/mammoth 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] 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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 488435b38e3b28b753600d2d73550bda72e3fd1184914d0ee9fd6d4284a8d802
[INFO] running `Command { std: "docker" "start" "-a" "488435b38e3b28b753600d2d73550bda72e3fd1184914d0ee9fd6d4284a8d802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "488435b38e3b28b753600d2d73550bda72e3fd1184914d0ee9fd6d4284a8d802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "488435b38e3b28b753600d2d73550bda72e3fd1184914d0ee9fd6d4284a8d802", kill_on_drop: false }`
[INFO] [stdout] 488435b38e3b28b753600d2d73550bda72e3fd1184914d0ee9fd6d4284a8d802
[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] [stdout] 2f190030366fc6e515b9262e74e6482e6d24bb943e5762296b36088212df045b
[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" "2f190030366fc6e515b9262e74e6482e6d24bb943e5762296b36088212df045b", kill_on_drop: false }`
[INFO] [stderr]     Checking mammoth v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "2f190030366fc6e515b9262e74e6482e6d24bb943e5762296b36088212df045b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f190030366fc6e515b9262e74e6482e6d24bb943e5762296b36088212df045b", kill_on_drop: false }`
[INFO] [stdout] 2f190030366fc6e515b9262e74e6482e6d24bb943e5762296b36088212df045b