[INFO] cloning repository https://github.com/jgrosso/mandelbrot-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jgrosso/mandelbrot-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgrosso%2Fmandelbrot-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgrosso%2Fmandelbrot-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c10f4a3fb0b83e10b4c619c54b086a79b367985d
[INFO] checking jgrosso/mandelbrot-rs against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgrosso%2Fmandelbrot-rs" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jgrosso/mandelbrot-rs 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/jgrosso/mandelbrot-rs
[INFO] finished tweaking git repo https://github.com/jgrosso/mandelbrot-rs
[INFO] tweaked toml for git repo https://github.com/jgrosso/mandelbrot-rs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jgrosso/mandelbrot-rs 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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] b2d98562f2dbb1c996d4d53b315340a4c4b12af0301b902e2549698a652f7559
[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" "b2d98562f2dbb1c996d4d53b315340a4c4b12af0301b902e2549698a652f7559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2d98562f2dbb1c996d4d53b315340a4c4b12af0301b902e2549698a652f7559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2d98562f2dbb1c996d4d53b315340a4c4b12af0301b902e2549698a652f7559", kill_on_drop: false }`
[INFO] [stdout] b2d98562f2dbb1c996d4d53b315340a4c4b12af0301b902e2549698a652f7559
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] ff82e9b1da17c050003446366d8556828635791614d83a38ac3bccb1149a53af
[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" "ff82e9b1da17c050003446366d8556828635791614d83a38ac3bccb1149a53af", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking inflate v0.4.2
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]     Checking gif v0.10.0
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking mandelbrot-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.20s
[INFO] running `Command { std: "docker" "inspect" "ff82e9b1da17c050003446366d8556828635791614d83a38ac3bccb1149a53af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff82e9b1da17c050003446366d8556828635791614d83a38ac3bccb1149a53af", kill_on_drop: false }`
[INFO] [stdout] ff82e9b1da17c050003446366d8556828635791614d83a38ac3bccb1149a53af