[INFO] cloning repository https://github.com/752986/mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/752986/mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F752986%2Fmandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F752986%2Fmandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c4f4cfa29107f8e794a6a5b56bc309df2883bef
[INFO] checking 752986/mandelbrot against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F752986%2Fmandelbrot" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/752986/mandelbrot
[INFO] finished tweaking git repo https://github.com/752986/mandelbrot
[INFO] tweaked toml for git repo https://github.com/752986/mandelbrot written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/752986/mandelbrot on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/752986/mandelbrot 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded version-compare v0.1.0
[INFO] [stderr]   Downloaded num-complex v0.4.2
[INFO] [stderr]   Downloaded sdl2 v0.35.2
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] [stderr]   Downloaded sdl2-sys v0.35.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcc4da41514548b0108a9d8d3f8c7aa88ef7b0fa119666ee325697e05fafec0c
[INFO] running `Command { std: "docker" "start" "-a" "fcc4da41514548b0108a9d8d3f8c7aa88ef7b0fa119666ee325697e05fafec0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcc4da41514548b0108a9d8d3f8c7aa88ef7b0fa119666ee325697e05fafec0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcc4da41514548b0108a9d8d3f8c7aa88ef7b0fa119666ee325697e05fafec0c", kill_on_drop: false }`
[INFO] [stdout] fcc4da41514548b0108a9d8d3f8c7aa88ef7b0fa119666ee325697e05fafec0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f431be9693eef849812b01b620111de17100be7205e6dd2930b8a7ddbc3cb42
[INFO] running `Command { std: "docker" "start" "-a" "3f431be9693eef849812b01b620111de17100be7205e6dd2930b8a7ddbc3cb42", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `VIRIDIS_COLORMAP` is never used
[INFO] [stdout]    --> src/colormaps.rs:260:11
[INFO] [stdout]     |
[INFO] [stdout] 260 | pub const VIRIDIS_COLORMAP: [[f32; 3]; 256] = [
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VIRIDIS_COLORMAP` is never used
[INFO] [stdout]    --> src/colormaps.rs:260:11
[INFO] [stdout]     |
[INFO] [stdout] 260 | pub const VIRIDIS_COLORMAP: [[f32; 3]; 256] = [
[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 4.54s
[INFO] running `Command { std: "docker" "inspect" "3f431be9693eef849812b01b620111de17100be7205e6dd2930b8a7ddbc3cb42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f431be9693eef849812b01b620111de17100be7205e6dd2930b8a7ddbc3cb42", kill_on_drop: false }`
[INFO] [stdout] 3f431be9693eef849812b01b620111de17100be7205e6dd2930b8a7ddbc3cb42