[INFO] cloning repository https://github.com/ajkavanagh/rust-mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajkavanagh/rust-mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajkavanagh%2Frust-mandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajkavanagh%2Frust-mandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec7818b5393b92b637e823009fead47008fc0c1e
[INFO] checking ajkavanagh/rust-mandelbrot against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajkavanagh%2Frust-mandelbrot" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ajkavanagh/rust-mandelbrot on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ajkavanagh/rust-mandelbrot
[INFO] finished tweaking git repo https://github.com/ajkavanagh/rust-mandelbrot
[INFO] tweaked toml for git repo https://github.com/ajkavanagh/rust-mandelbrot written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ajkavanagh/rust-mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-complex v0.1.38
[INFO] [stderr]   Downloaded lazy_static v0.2.8
[INFO] [stderr]   Downloaded num v0.1.39
[INFO] [stderr]   Downloaded regex v0.2.2
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.13
[INFO] [stderr]   Downloaded rand v0.3.15
[INFO] [stderr]   Downloaded serde_derive_internals v0.15.1
[INFO] [stderr]   Downloaded serde_derive v1.0.9
[INFO] [stderr]   Downloaded libc v0.2.26
[INFO] [stderr]   Downloaded scoped_threadpool v0.1.7
[INFO] [stderr]   Downloaded num-bigint v0.1.39
[INFO] [stderr]   Downloaded image v0.14.0
[INFO] [stderr]   Downloaded png v0.8.0
[INFO] [stderr]   Downloaded regex-syntax v0.4.1
[INFO] [stderr]   Downloaded num-rational v0.1.38
[INFO] [stderr]   Downloaded num-integer v0.1.34
[INFO] [stderr]   Downloaded num-iter v0.1.33
[INFO] [stderr]   Downloaded color_quant v1.0.0
[INFO] [stderr]   Downloaded inflate v0.2.0
[INFO] [stderr]   Downloaded gif v0.9.2
[INFO] [stderr]   Downloaded enum_primitive v0.1.1
[INFO] [stderr]   Downloaded adler32 v1.0.0
[INFO] [stderr]   Downloaded num-traits v0.1.39
[INFO] [stderr]   Downloaded scopeguard v0.3.2
[INFO] [stderr]   Downloaded rayon-core v1.2.1
[INFO] [stderr]   Downloaded thread_local v0.3.4
[INFO] [stderr]   Downloaded byteorder v1.1.0
[INFO] [stderr]   Downloaded either v1.1.0
[INFO] [stderr]   Downloaded coco v0.1.1
[INFO] [stderr]   Downloaded num_cpus v1.6.2
[INFO] [stderr]   Downloaded docopt v0.8.1
[INFO] [stderr]   Downloaded serde v1.0.9
[INFO] [stderr]   Downloaded futures v0.1.14
[INFO] [stderr]   Downloaded deflate v0.7.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f0509ec4ed1910c345c4954c84c53f5d6b480ce877b7c775f79394e47df8a21
[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" "8f0509ec4ed1910c345c4954c84c53f5d6b480ce877b7c775f79394e47df8a21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f0509ec4ed1910c345c4954c84c53f5d6b480ce877b7c775f79394e47df8a21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f0509ec4ed1910c345c4954c84c53f5d6b480ce877b7c775f79394e47df8a21", kill_on_drop: false }`
[INFO] [stdout] 8f0509ec4ed1910c345c4954c84c53f5d6b480ce877b7c775f79394e47df8a21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb6fcb11cbd86517ebc45e309b4d8dd7732b9d77737927a6615aeca2a53e7b8f
[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" "eb6fcb11cbd86517ebc45e309b4d8dd7732b9d77737927a6615aeca2a53e7b8f", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.26
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking scopeguard v0.3.2
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking adler32 v1.0.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.7
[INFO] [stderr]     Checking serde v1.0.9
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking deflate v0.7.13
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking num-integer v0.1.34
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-complex v0.1.38
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking num-bigint v0.1.39
[INFO] [stderr]     Checking png v0.8.0
[INFO] [stderr]     Checking num-rational v0.1.38
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]    Compiling serde_derive v1.0.9
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.14.0
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.15s
[INFO] running `Command { std: "docker" "inspect" "eb6fcb11cbd86517ebc45e309b4d8dd7732b9d77737927a6615aeca2a53e7b8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb6fcb11cbd86517ebc45e309b4d8dd7732b9d77737927a6615aeca2a53e7b8f", kill_on_drop: false }`
[INFO] [stdout] eb6fcb11cbd86517ebc45e309b4d8dd7732b9d77737927a6615aeca2a53e7b8f