[INFO] cloning repository https://github.com/sautax/mandelbrot-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sautax/mandelbrot-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsautax%2Fmandelbrot-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsautax%2Fmandelbrot-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 065ca1030a34e50f748dc0c6a035f3657b710771
[INFO] testing sautax/mandelbrot-rust against master#61469b682c2b0bf9cebc4622f1859e2bb3b7ebca for pr-91743
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsautax%2Fmandelbrot-rust" "/workspace/builds/worker-77/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-77/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sautax/mandelbrot-rust on toolchain 61469b682c2b0bf9cebc4622f1859e2bb3b7ebca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sautax/mandelbrot-rust
[INFO] finished tweaking git repo https://github.com/sautax/mandelbrot-rust
[INFO] tweaked toml for git repo https://github.com/sautax/mandelbrot-rust written to /workspace/builds/worker-77/source/Cargo.toml
[INFO] crate git repo https://github.com/sautax/mandelbrot-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "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 quote v0.6.10
[INFO] [stderr]   Downloaded unicode-xid v0.1.0
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded proc-macro2 v0.4.24
[INFO] [stderr]   Downloaded deflate v0.7.19
[INFO] [stderr]   Downloaded num-rational v0.2.1
[INFO] [stderr]   Downloaded rayon v1.0.3
[INFO] [stderr]   Downloaded scopeguard v0.3.3
[INFO] [stderr]   Downloaded color_quant v1.0.1
[INFO] [stderr]   Downloaded nodrop v0.1.13
[INFO] [stderr]   Downloaded crossbeam-utils v0.2.2
[INFO] [stderr]   Downloaded crossbeam-deque v0.2.0
[INFO] [stderr]   Downloaded num_cpus v1.8.0
[INFO] [stderr]   Downloaded rayon-core v1.4.1
[INFO] [stderr]   Downloaded image v0.20.1
[INFO] [stderr]   Downloaded num-iter v0.1.37
[INFO] [stderr]   Downloaded inflate v0.4.3
[INFO] [stderr]   Downloaded gif v0.10.1
[INFO] [stderr]   Downloaded lzw v0.10.0
[INFO] [stderr]   Downloaded memoffset v0.2.1
[INFO] [stderr]   Downloaded num-traits v0.2.6
[INFO] [stderr]   Downloaded tiff v0.2.1
[INFO] [stderr]   Downloaded arrayvec v0.4.8
[INFO] [stderr]   Downloaded crossbeam-epoch v0.3.1
[INFO] [stderr]   Downloaded byteorder v1.2.7
[INFO] [stderr]   Downloaded num-derive v0.2.3
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.15
[INFO] [stderr]   Downloaded syn v0.15.22
[INFO] [stderr]   Downloaded png v0.12.0
[INFO] [stderr]   Downloaded adler32 v1.0.3
[INFO] [stderr]   Downloaded lazy_static v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fff0f3da43efae65b1812d35a110925443eb4a6adb907cdac7f0278fa23bb1f4
[INFO] running `Command { std: "docker" "start" "-a" "fff0f3da43efae65b1812d35a110925443eb4a6adb907cdac7f0278fa23bb1f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fff0f3da43efae65b1812d35a110925443eb4a6adb907cdac7f0278fa23bb1f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fff0f3da43efae65b1812d35a110925443eb4a6adb907cdac7f0278fa23bb1f4", kill_on_drop: false }`
[INFO] [stdout] fff0f3da43efae65b1812d35a110925443eb4a6adb907cdac7f0278fa23bb1f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d247fb8bf1bfc63dcb0a376acb8112e3dffd9606803b1b8b54108c154c6222d
[INFO] running `Command { std: "docker" "start" "-a" "4d247fb8bf1bfc63dcb0a376acb8112e3dffd9606803b1b8b54108c154c6222d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "4d247fb8bf1bfc63dcb0a376acb8112e3dffd9606803b1b8b54108c154c6222d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d247fb8bf1bfc63dcb0a376acb8112e3dffd9606803b1b8b54108c154c6222d", kill_on_drop: false }`
[INFO] [stdout] 4d247fb8bf1bfc63dcb0a376acb8112e3dffd9606803b1b8b54108c154c6222d