[INFO] updating cached repository wahtak/rust-mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wahtak/rust-mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wahtak/rust-mandelbrot" "work/ex/beta-1.38-1/sources/1.37.0/gh/wahtak/rust-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wahtak/rust-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wahtak/rust-mandelbrot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wahtak/rust-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wahtak/rust-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 517952f69400d806413954f7f69399768c16cc42
[INFO] sha for GitHub repo wahtak/rust-mandelbrot: 517952f69400d806413954f7f69399768c16cc42
[INFO] validating manifest of wahtak/rust-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 wahtak/rust-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 wahtak/rust-mandelbrot
[INFO] finished frobbing wahtak/rust-mandelbrot
[INFO] frobbed toml for wahtak/rust-mandelbrot written to work/ex/beta-1.38-1/sources/1.37.0/gh/wahtak/rust-mandelbrot/Cargo.toml
[INFO] started frobbing wahtak/rust-mandelbrot
[INFO] finished frobbing wahtak/rust-mandelbrot
[INFO] frobbed toml for wahtak/rust-mandelbrot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wahtak/rust-mandelbrot/Cargo.toml
[INFO] crate wahtak/rust-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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing wahtak/rust-mandelbrot against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wahtak/rust-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4c6ba25001ea06358c70f98702b34e505e983608d36932fa556fae343690ac54
[INFO] running `"docker" "start" "-a" "4c6ba25001ea06358c70f98702b34e505e983608d36932fa556fae343690ac54"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.28
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling image v0.21.1
[INFO] [stderr]    Compiling rust_mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/draw.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> image::Rgb<u8>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:21:49
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn mandelbrot_function(c: Complex64) -> Box<Fn(Complex64) -> Complex64> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Complex64) -> Complex64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     function: &Fn(T) -> T,
[INFO] [stderr]    |                ^^^^^^^^^^ help: use `dyn`: `dyn Fn(T) -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `draw`
[INFO] [stderr]  --> src/draw.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.04s
[INFO] running `"docker" "inspect" "4c6ba25001ea06358c70f98702b34e505e983608d36932fa556fae343690ac54"`
[INFO] running `"docker" "rm" "-f" "4c6ba25001ea06358c70f98702b34e505e983608d36932fa556fae343690ac54"`
[INFO] [stdout] 4c6ba25001ea06358c70f98702b34e505e983608d36932fa556fae343690ac54
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wahtak/rust-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9bdaec6c5325de8b1972adc2d736e94583f7d43e8b4ac21ca84c0081ef9f1c3e
[INFO] running `"docker" "start" "-a" "9bdaec6c5325de8b1972adc2d736e94583f7d43e8b4ac21ca84c0081ef9f1c3e"`
[INFO] [stderr]    Compiling rust_mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/draw.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> image::Rgb<u8>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:21:49
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn mandelbrot_function(c: Complex64) -> Box<Fn(Complex64) -> Complex64> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Complex64) -> Complex64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     function: &Fn(T) -> T,
[INFO] [stderr]    |                ^^^^^^^^^^ help: use `dyn`: `dyn Fn(T) -> T`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `"docker" "inspect" "9bdaec6c5325de8b1972adc2d736e94583f7d43e8b4ac21ca84c0081ef9f1c3e"`
[INFO] running `"docker" "rm" "-f" "9bdaec6c5325de8b1972adc2d736e94583f7d43e8b4ac21ca84c0081ef9f1c3e"`
[INFO] [stdout] 9bdaec6c5325de8b1972adc2d736e94583f7d43e8b4ac21ca84c0081ef9f1c3e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wahtak/rust-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] bd309ae045bfca862b11164e7315a6d607f4fd2580a61b77b6f8535e93ed5e67
[INFO] running `"docker" "start" "-a" "bd309ae045bfca862b11164e7315a6d607f4fd2580a61b77b6f8535e93ed5e67"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_mandelbrot-f07ad137d20a7956
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test mandelbrot::tests::measure_divergence_returns_none_when_number_of_iterations_exceeds_maximum ... ok
[INFO] [stdout] test mandelbrot::tests::mandelbrot_function_evaluates_correctly_for_complex_numbers ... ok
[INFO] [stdout] test draw::tests::float_range_iterates_over_range ... ok
[INFO] [stdout] test mandelbrot::tests::mandelbrot_function_diverges_for_some_constant ... ok
[INFO] [stdout] test mandelbrot::tests::mandelbrot_function_does_not_diverge_for_some_constant ... ok
[INFO] [stdout] test mandelbrot::tests::measure_divergence_returns_number_of_iterations_after_which_value_is_out_of_bound ... ok
[INFO] [stdout] test draw::tests::draw_creates_rbg_image_from_color_function ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "bd309ae045bfca862b11164e7315a6d607f4fd2580a61b77b6f8535e93ed5e67"`
[INFO] running `"docker" "rm" "-f" "bd309ae045bfca862b11164e7315a6d607f4fd2580a61b77b6f8535e93ed5e67"`
[INFO] [stdout] bd309ae045bfca862b11164e7315a6d607f4fd2580a61b77b6f8535e93ed5e67