[INFO] cloning repository https://github.com/Iquiji/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/Iquiji/rust-mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIquiji%2Frust-mandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIquiji%2Frust-mandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad94ec1432ff9d344209b33058754a4bde97a6e1
[INFO] checking Iquiji/rust-mandelbrot against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIquiji%2Frust-mandelbrot" "/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/Iquiji/rust-mandelbrot on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Iquiji/rust-mandelbrot
[INFO] finished tweaking git repo https://github.com/Iquiji/rust-mandelbrot
[INFO] tweaked toml for git repo https://github.com/Iquiji/rust-mandelbrot written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/Iquiji/rust-mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63dcc9c35113ba0bc610d09aa6fe71c8ce935301d2df069d2e694065b2bb42be
[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" "63dcc9c35113ba0bc610d09aa6fe71c8ce935301d2df069d2e694065b2bb42be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63dcc9c35113ba0bc610d09aa6fe71c8ce935301d2df069d2e694065b2bb42be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63dcc9c35113ba0bc610d09aa6fe71c8ce935301d2df069d2e694065b2bb42be", kill_on_drop: false }`
[INFO] [stdout] 63dcc9c35113ba0bc610d09aa6fe71c8ce935301d2df069d2e694065b2bb42be
[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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e40ea20673f38ed143b67c28f8fcb015698de2eb67fcfc8b4fb5f8d23bcead5
[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" "8e40ea20673f38ed143b67c28f8fcb015698de2eb67fcfc8b4fb5f8d23bcead5", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.1.9
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]    Compiling rug v1.2.1
[INFO] [stderr]     Checking hsl v0.1.1
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]     Checking termios v0.3.0
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling syn v0.15.8
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking rayon v1.0.2
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking console v0.6.2
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.0
[INFO] [stderr]     Checking rust-mandelbrot-manualrank v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 32s
[INFO] running `Command { std: "docker" "inspect" "8e40ea20673f38ed143b67c28f8fcb015698de2eb67fcfc8b4fb5f8d23bcead5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e40ea20673f38ed143b67c28f8fcb015698de2eb67fcfc8b4fb5f8d23bcead5", kill_on_drop: false }`
[INFO] [stdout] 8e40ea20673f38ed143b67c28f8fcb015698de2eb67fcfc8b4fb5f8d23bcead5