[INFO] updating cached repository https://github.com/jdhorwitz/mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b5e9f6c9c25abf500e11c1ff13d49b1ce8e5f7f1
[INFO] checking jdhorwitz/mandelbrot against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdhorwitz%2Fmandelbrot" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jdhorwitz/mandelbrot on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jdhorwitz/mandelbrot
[INFO] finished tweaking git repo https://github.com/jdhorwitz/mandelbrot
[INFO] tweaked toml for git repo https://github.com/jdhorwitz/mandelbrot written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/jdhorwitz/mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 942a343d102c07b6c5eda1a47eb9c02a0f6d01d0a4e68c0a8b54b34b93d29f63
[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" "942a343d102c07b6c5eda1a47eb9c02a0f6d01d0a4e68c0a8b54b34b93d29f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "942a343d102c07b6c5eda1a47eb9c02a0f6d01d0a4e68c0a8b54b34b93d29f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "942a343d102c07b6c5eda1a47eb9c02a0f6d01d0a4e68c0a8b54b34b93d29f63", kill_on_drop: false }`
[INFO] [stdout] 942a343d102c07b6c5eda1a47eb9c02a0f6d01d0a4e68c0a8b54b34b93d29f63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 592e3445080f1bb2300e3fda1e536f33c40a60b630bf0cf161c4bded2a53480e
[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" "592e3445080f1bb2300e3fda1e536f33c40a60b630bf0cf161c4bded2a53480e", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking lzw v0.9.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking byteorder v0.4.2
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]    Compiling miniz-sys v0.1.9
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking gif v0.7.0
[INFO] [stderr]     Checking flate2 v0.2.17
[INFO] [stderr]     Checking png v0.4.3
[INFO] [stderr]     Checking num-bigint v0.1.35
[INFO] [stderr]     Checking num-complex v0.1.35
[INFO] [stderr]     Checking num-rational v0.1.35
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stderr]     Checking image v0.6.1
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.71s
[INFO] running `Command { std: "docker" "inspect" "592e3445080f1bb2300e3fda1e536f33c40a60b630bf0cf161c4bded2a53480e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "592e3445080f1bb2300e3fda1e536f33c40a60b630bf0cf161c4bded2a53480e", kill_on_drop: false }`
[INFO] [stdout] 592e3445080f1bb2300e3fda1e536f33c40a60b630bf0cf161c4bded2a53480e