[INFO] cloning repository https://github.com/n4to4/mandelbrot-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/n4to4/mandelbrot-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fn4to4%2Fmandelbrot-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fn4to4%2Fmandelbrot-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c98dd5350f294a6c2b862e4d1dab0960a7428e3d
[INFO] checking n4to4/mandelbrot-rs against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fn4to4%2Fmandelbrot-rs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/n4to4/mandelbrot-rs on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/n4to4/mandelbrot-rs
[INFO] finished tweaking git repo https://github.com/n4to4/mandelbrot-rs
[INFO] tweaked toml for git repo https://github.com/n4to4/mandelbrot-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/n4to4/mandelbrot-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-deque v0.5.2
[INFO] [stderr]   Downloaded crossbeam v0.4.1
[INFO] [stderr]   Downloaded smallvec v0.6.3
[INFO] [stderr]   Downloaded num-complex v0.2.0
[INFO] [stderr]   Downloaded rand v0.5.4
[INFO] [stderr]   Downloaded deflate v0.7.18
[INFO] [stderr]   Downloaded num-rational v0.2.1
[INFO] [stderr]   Downloaded crossbeam-channel v0.2.4
[INFO] [stderr]   Downloaded gif v0.10.0
[INFO] [stderr]   Downloaded num-derive v0.2.2
[INFO] [stderr]   Downloaded inflate v0.4.3
[INFO] [stderr]   Downloaded num-bigint v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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] 164647ae26dfa199cd2cbf5591c2af788f033ed75b72ce58053e3cc5238ea4e6
[INFO] running `Command { std: "docker" "start" "-a" "164647ae26dfa199cd2cbf5591c2af788f033ed75b72ce58053e3cc5238ea4e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "164647ae26dfa199cd2cbf5591c2af788f033ed75b72ce58053e3cc5238ea4e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "164647ae26dfa199cd2cbf5591c2af788f033ed75b72ce58053e3cc5238ea4e6", kill_on_drop: false }`
[INFO] [stdout] 164647ae26dfa199cd2cbf5591c2af788f033ed75b72ce58053e3cc5238ea4e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 7a2645dae67cd972c36bcbbc6daead6277d5244d103be54ede6cfa04dbc339c2
[INFO] running `Command { std: "docker" "start" "-a" "7a2645dae67cd972c36bcbbc6daead6277d5244d103be54ede6cfa04dbc339c2", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking smallvec v0.6.3
[INFO] [stderr]     Checking num-complex v0.2.0
[INFO] [stderr]    Compiling syn v0.14.7
[INFO] [stderr]     Checking num-bigint v0.2.0
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.5.2
[INFO] [stderr]     Checking parking_lot v0.6.3
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.2.4
[INFO] [stderr]     Checking rayon v1.0.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.84s
[INFO] running `Command { std: "docker" "inspect" "7a2645dae67cd972c36bcbbc6daead6277d5244d103be54ede6cfa04dbc339c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a2645dae67cd972c36bcbbc6daead6277d5244d103be54ede6cfa04dbc339c2", kill_on_drop: false }`
[INFO] [stdout] 7a2645dae67cd972c36bcbbc6daead6277d5244d103be54ede6cfa04dbc339c2