[INFO] cloning repository https://github.com/FrankChinedu/mandelbrot_plotter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FrankChinedu/mandelbrot_plotter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrankChinedu%2Fmandelbrot_plotter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrankChinedu%2Fmandelbrot_plotter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 263e88d932adcab41f1b7ba1300e42cec6581f78
[INFO] checking FrankChinedu/mandelbrot_plotter against try#804fff1ae95da9d03bd44eee27f258020a575dab for pr-146013
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrankChinedu%2Fmandelbrot_plotter" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/FrankChinedu/mandelbrot_plotter
[INFO] finished tweaking git repo https://github.com/FrankChinedu/mandelbrot_plotter
[INFO] tweaked toml for git repo https://github.com/FrankChinedu/mandelbrot_plotter written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/FrankChinedu/mandelbrot_plotter on toolchain 804fff1ae95da9d03bd44eee27f258020a575dab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/FrankChinedu/mandelbrot_plotter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "fetch" "--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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1091dc22f1e0869a5c752da5f0cd8fd2e03bbffec89f0cfda07f40f538dd8b9
[INFO] running `Command { std: "docker" "start" "-a" "d1091dc22f1e0869a5c752da5f0cd8fd2e03bbffec89f0cfda07f40f538dd8b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1091dc22f1e0869a5c752da5f0cd8fd2e03bbffec89f0cfda07f40f538dd8b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1091dc22f1e0869a5c752da5f0cd8fd2e03bbffec89f0cfda07f40f538dd8b9", kill_on_drop: false }`
[INFO] [stdout] d1091dc22f1e0869a5c752da5f0cd8fd2e03bbffec89f0cfda07f40f538dd8b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+804fff1ae95da9d03bd44eee27f258020a575dab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b42974d0890dd110e58675cc214605fa1e1108c528244c68adf8be5198537195
[INFO] running `Command { std: "docker" "start" "-a" "b42974d0890dd110e58675cc214605fa1e1108c528244c68adf8be5198537195", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking rust-prog-book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `complex_square_add_loop` is never used
[INFO] [stdout]    --> src/main.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn complex_square_add_loop(c: Complex<f64>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `complex_square_add_loop` is never used
[INFO] [stdout]    --> src/main.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn complex_square_add_loop(c: Complex<f64>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.07s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.7.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b42974d0890dd110e58675cc214605fa1e1108c528244c68adf8be5198537195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b42974d0890dd110e58675cc214605fa1e1108c528244c68adf8be5198537195", kill_on_drop: false }`
[INFO] [stdout] b42974d0890dd110e58675cc214605fa1e1108c528244c68adf8be5198537195