[INFO] cloning repository https://github.com/dumpstr/mandelbrot_img_gen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dumpstr/mandelbrot_img_gen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdumpstr%2Fmandelbrot_img_gen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdumpstr%2Fmandelbrot_img_gen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c25582eab1ae09f02b695dd2b3447fce0b55db32
[INFO] testing dumpstr/mandelbrot_img_gen against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdumpstr%2Fmandelbrot_img_gen" "/workspace/builds/worker-32/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dumpstr/mandelbrot_img_gen on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dumpstr/mandelbrot_img_gen
[INFO] finished tweaking git repo https://github.com/dumpstr/mandelbrot_img_gen
[INFO] tweaked toml for git repo https://github.com/dumpstr/mandelbrot_img_gen written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] crate git repo https://github.com/dumpstr/mandelbrot_img_gen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef7cee0be5bf1ec5072f056ddd949fe6ed8c867603bb6c1072fcefadb86ba3b6
[INFO] running `Command { std: "docker" "start" "-a" "ef7cee0be5bf1ec5072f056ddd949fe6ed8c867603bb6c1072fcefadb86ba3b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef7cee0be5bf1ec5072f056ddd949fe6ed8c867603bb6c1072fcefadb86ba3b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef7cee0be5bf1ec5072f056ddd949fe6ed8c867603bb6c1072fcefadb86ba3b6", kill_on_drop: false }`
[INFO] [stdout] ef7cee0be5bf1ec5072f056ddd949fe6ed8c867603bb6c1072fcefadb86ba3b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b209de0bfe15e08cce12079fcba695e89d97cec4e1f6a54dcd5ae3342ce34782
[INFO] running `Command { std: "docker" "start" "-a" "b209de0bfe15e08cce12079fcba695e89d97cec4e1f6a54dcd5ae3342ce34782", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling inflate v0.2.0
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling gif v0.9.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling png v0.7.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling image v0.13.0
[INFO] [stderr]    Compiling mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `complex_sq_add_loop`
[INFO] [stdout]   --> src/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn complex_sq_add_loop(c: Complex<f64>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "b209de0bfe15e08cce12079fcba695e89d97cec4e1f6a54dcd5ae3342ce34782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b209de0bfe15e08cce12079fcba695e89d97cec4e1f6a54dcd5ae3342ce34782", kill_on_drop: false }`
[INFO] [stdout] b209de0bfe15e08cce12079fcba695e89d97cec4e1f6a54dcd5ae3342ce34782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 121ecad6767c3244949d0ff14d7c5dbb60821f3a634d4a95531e6380ada08f8e
[INFO] running `Command { std: "docker" "start" "-a" "121ecad6767c3244949d0ff14d7c5dbb60821f3a634d4a95531e6380ada08f8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     assert_eq!(parse_pair::<i32>("0.5x1.5",  'x'), Some((0.5, 1.5)));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found floating-point number
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Option<(i32, i32)>`
[INFO] [stdout]                found enum `Option<({float}, {float})>`
[INFO] [stdout]     = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mandelbrot` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "121ecad6767c3244949d0ff14d7c5dbb60821f3a634d4a95531e6380ada08f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "121ecad6767c3244949d0ff14d7c5dbb60821f3a634d4a95531e6380ada08f8e", kill_on_drop: false }`
[INFO] [stdout] 121ecad6767c3244949d0ff14d7c5dbb60821f3a634d4a95531e6380ada08f8e