[INFO] updating cached repository Jin-WW/mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Jin-WW/mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Jin-WW/mandelbrot" "work/ex/beta-1.38-1/sources/1.37.0/gh/Jin-WW/mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Jin-WW/mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Jin-WW/mandelbrot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jin-WW/mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jin-WW/mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 76ab7f4a38f08a4db00f31067df2cf09bc341d87
[INFO] sha for GitHub repo Jin-WW/mandelbrot: 76ab7f4a38f08a4db00f31067df2cf09bc341d87
[INFO] validating manifest of Jin-WW/mandelbrot on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Jin-WW/mandelbrot on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Jin-WW/mandelbrot
[INFO] finished frobbing Jin-WW/mandelbrot
[INFO] frobbed toml for Jin-WW/mandelbrot written to work/ex/beta-1.38-1/sources/1.37.0/gh/Jin-WW/mandelbrot/Cargo.toml
[INFO] started frobbing Jin-WW/mandelbrot
[INFO] finished frobbing Jin-WW/mandelbrot
[INFO] frobbed toml for Jin-WW/mandelbrot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jin-WW/mandelbrot/Cargo.toml
[INFO] crate Jin-WW/mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Jin-WW/mandelbrot against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jin-WW/mandelbrot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 6d099711e36abbcb703e6bba0974065cd40592a12947fdccd0e3e6fc9a7af98c
[INFO] running `"docker" "start" "-a" "6d099711e36abbcb703e6bba0974065cd40592a12947fdccd0e3e6fc9a7af98c"`
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling png v0.7.0
[INFO] [stderr]    Compiling rayon v1.0.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.14
[INFO] [stderr]    Compiling image v0.13.0
[INFO] [stderr]    Compiling mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     write_image("output.png", &pixels, bounds);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.73s
[INFO] running `"docker" "inspect" "6d099711e36abbcb703e6bba0974065cd40592a12947fdccd0e3e6fc9a7af98c"`
[INFO] running `"docker" "rm" "-f" "6d099711e36abbcb703e6bba0974065cd40592a12947fdccd0e3e6fc9a7af98c"`
[INFO] [stdout] 6d099711e36abbcb703e6bba0974065cd40592a12947fdccd0e3e6fc9a7af98c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jin-WW/mandelbrot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9299c5586b0e744bb60934b237bd9e62aa62df73629efa7c51c20e2c10a3c2b8
[INFO] running `"docker" "start" "-a" "9299c5586b0e744bb60934b237bd9e62aa62df73629efa7c51c20e2c10a3c2b8"`
[INFO] [stderr]    Compiling mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     write_image("output.png", &pixels, bounds);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `"docker" "inspect" "9299c5586b0e744bb60934b237bd9e62aa62df73629efa7c51c20e2c10a3c2b8"`
[INFO] running `"docker" "rm" "-f" "9299c5586b0e744bb60934b237bd9e62aa62df73629efa7c51c20e2c10a3c2b8"`
[INFO] [stdout] 9299c5586b0e744bb60934b237bd9e62aa62df73629efa7c51c20e2c10a3c2b8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jin-WW/mandelbrot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 05bc08174516eee66ca07bde7f166b20744f8e383ad57e2a50420ddf8ad93d5a
[INFO] running `"docker" "start" "-a" "05bc08174516eee66ca07bde7f166b20744f8e383ad57e2a50420ddf8ad93d5a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mandelbrot-342ab5b454e6dbc1
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_pixel_to_point ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "05bc08174516eee66ca07bde7f166b20744f8e383ad57e2a50420ddf8ad93d5a"`
[INFO] running `"docker" "rm" "-f" "05bc08174516eee66ca07bde7f166b20744f8e383ad57e2a50420ddf8ad93d5a"`
[INFO] [stdout] 05bc08174516eee66ca07bde7f166b20744f8e383ad57e2a50420ddf8ad93d5a