[INFO] cloning repository https://github.com/simoninator/mandelbrot_render
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/simoninator/mandelbrot_render" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimoninator%2Fmandelbrot_render", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimoninator%2Fmandelbrot_render'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1574757e428b9fe81011b83c7d466b8fe7490b6
[INFO] checking simoninator/mandelbrot_render against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimoninator%2Fmandelbrot_render" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/simoninator/mandelbrot_render on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/simoninator/mandelbrot_render
[INFO] finished tweaking git repo https://github.com/simoninator/mandelbrot_render
[INFO] tweaked toml for git repo https://github.com/simoninator/mandelbrot_render written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/simoninator/mandelbrot_render already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded special v0.8.1
[INFO] [stderr]   Downloaded image v0.13.0
[INFO] [stderr]   Downloaded slice-of-array v0.2.1
[INFO] [stderr]   Downloaded random v0.12.2
[INFO] [stderr]   Downloaded probability v0.17.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e8d0f3730538807ad30af5dc966a2289575b097cc75df57b9bb48ba30898443b
[INFO] running `Command { std: "docker" "start" "-a" "e8d0f3730538807ad30af5dc966a2289575b097cc75df57b9bb48ba30898443b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8d0f3730538807ad30af5dc966a2289575b097cc75df57b9bb48ba30898443b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8d0f3730538807ad30af5dc966a2289575b097cc75df57b9bb48ba30898443b", kill_on_drop: false }`
[INFO] [stdout] e8d0f3730538807ad30af5dc966a2289575b097cc75df57b9bb48ba30898443b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b6f2363c39fea8b1b7752b98e9b44d8e1a55027942a6a3a17d192d0fea67bb8
[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" "7b6f2363c39fea8b1b7752b98e9b44d8e1a55027942a6a3a17d192d0fea67bb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking slice-of-array v0.2.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking special v0.8.1
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking probability v0.17.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking num-iter v0.1.40
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.37s
[INFO] running `Command { std: "docker" "inspect" "7b6f2363c39fea8b1b7752b98e9b44d8e1a55027942a6a3a17d192d0fea67bb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b6f2363c39fea8b1b7752b98e9b44d8e1a55027942a6a3a17d192d0fea67bb8", kill_on_drop: false }`
[INFO] [stdout] 7b6f2363c39fea8b1b7752b98e9b44d8e1a55027942a6a3a17d192d0fea67bb8