[INFO] cloning repository https://github.com/Jin-WW/mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jin-WW/mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJin-WW%2Fmandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJin-WW%2Fmandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76ab7f4a38f08a4db00f31067df2cf09bc341d87
[INFO] checking Jin-WW/mandelbrot against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJin-WW%2Fmandelbrot" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jin-WW/mandelbrot on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jin-WW/mandelbrot
[INFO] finished tweaking git repo https://github.com/Jin-WW/mandelbrot
[INFO] tweaked toml for git repo https://github.com/Jin-WW/mandelbrot written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Jin-WW/mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-complex v0.1.42
[INFO] [stderr]   Downloaded rayon v1.0.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.3.0
[INFO] [stderr]   Downloaded num-bigint v0.1.43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 173b08fbbff0cb6857a00aa922f823b97903a70fe65cf6e7ac816a03aca4b9b7
[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" "173b08fbbff0cb6857a00aa922f823b97903a70fe65cf6e7ac816a03aca4b9b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "173b08fbbff0cb6857a00aa922f823b97903a70fe65cf6e7ac816a03aca4b9b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "173b08fbbff0cb6857a00aa922f823b97903a70fe65cf6e7ac816a03aca4b9b7", kill_on_drop: false }`
[INFO] [stdout] 173b08fbbff0cb6857a00aa922f823b97903a70fe65cf6e7ac816a03aca4b9b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "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] 22617f9b6b4ef97071dc3d90a223966a88603865dd10d30a89f6fe9a453e6f22
[INFO] running `Command { std: "docker" "start" "-a" "22617f9b6b4ef97071dc3d90a223966a88603865dd10d30a89f6fe9a453e6f22", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking either v1.4.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking crossbeam-epoch v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking rayon v1.0.0
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]     Checking num-complex v0.1.42
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     write_image("output.png", &pixels, bounds);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     write_image("output.png", &pixels, bounds);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.07s
[INFO] running `Command { std: "docker" "inspect" "22617f9b6b4ef97071dc3d90a223966a88603865dd10d30a89f6fe9a453e6f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22617f9b6b4ef97071dc3d90a223966a88603865dd10d30a89f6fe9a453e6f22", kill_on_drop: false }`
[INFO] [stdout] 22617f9b6b4ef97071dc3d90a223966a88603865dd10d30a89f6fe9a453e6f22