[INFO] cloning repository https://github.com/troeggla/mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/troeggla/mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftroeggla%2Fmandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftroeggla%2Fmandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17aa65f5ca9e9d9bd197d1daf61beb88a4ddb70f
[INFO] checking troeggla/mandelbrot against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftroeggla%2Fmandelbrot" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/troeggla/mandelbrot on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/troeggla/mandelbrot
[INFO] finished tweaking git repo https://github.com/troeggla/mandelbrot
[INFO] tweaked toml for git repo https://github.com/troeggla/mandelbrot written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/troeggla/mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pbr v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71db2160d18dc52f258b779764c6f1907dfd3a675493713c6f0dce1d4f117005
[INFO] running `Command { std: "docker" "start" "-a" "71db2160d18dc52f258b779764c6f1907dfd3a675493713c6f0dce1d4f117005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71db2160d18dc52f258b779764c6f1907dfd3a675493713c6f0dce1d4f117005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71db2160d18dc52f258b779764c6f1907dfd3a675493713c6f0dce1d4f117005", kill_on_drop: false }`
[INFO] [stdout] 71db2160d18dc52f258b779764c6f1907dfd3a675493713c6f0dce1d4f117005
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59fa87184f9ab7eb9e968acef63906a8fcded9aa11b633989c26cbe3aeae9ae2
[INFO] running `Command { std: "docker" "start" "-a" "59fa87184f9ab7eb9e968acef63906a8fcded9aa11b633989c26cbe3aeae9ae2", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]     Checking either v1.4.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.8
[INFO] [stderr]     Checking argparse v0.2.1
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking deflate v0.7.17
[INFO] [stderr]     Checking inflate v0.3.3
[INFO] [stderr]     Checking num-complex v0.1.40
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking pbr v1.0.0
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.17.0
[INFO] [stderr]     Checking mandelbrot v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.17s
[INFO] running `Command { std: "docker" "inspect" "59fa87184f9ab7eb9e968acef63906a8fcded9aa11b633989c26cbe3aeae9ae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59fa87184f9ab7eb9e968acef63906a8fcded9aa11b633989c26cbe3aeae9ae2", kill_on_drop: false }`
[INFO] [stdout] 59fa87184f9ab7eb9e968acef63906a8fcded9aa11b633989c26cbe3aeae9ae2