[INFO] updating cached repository kadtewsd/mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kadtewsd/mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kadtewsd/mandelbrot" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/kadtewsd/mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/kadtewsd/mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kadtewsd/mandelbrot" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/kadtewsd/mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/kadtewsd/mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9e9400f88652705d13122f7c043490a57f683d4f
[INFO] sha for GitHub repo kadtewsd/mandelbrot: 9e9400f88652705d13122f7c043490a57f683d4f
[INFO] validating manifest of kadtewsd/mandelbrot on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kadtewsd/mandelbrot on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kadtewsd/mandelbrot
[INFO] finished frobbing kadtewsd/mandelbrot
[INFO] frobbed toml for kadtewsd/mandelbrot written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/kadtewsd/mandelbrot/Cargo.toml
[INFO] started frobbing kadtewsd/mandelbrot
[INFO] finished frobbing kadtewsd/mandelbrot
[INFO] frobbed toml for kadtewsd/mandelbrot written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/kadtewsd/mandelbrot/Cargo.toml
[INFO] crate kadtewsd/mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kadtewsd/mandelbrot against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-3/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/kadtewsd/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=forbid" "-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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5f845b0c976c867185c6ea99a04b9cfd5ba1d99292359ea91a4b9d0d02023551
[INFO] running `"docker" "start" "-a" "5f845b0c976c867185c6ea99a04b9cfd5ba1d99292359ea91a4b9d0d02023551"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `render`
[INFO] [stderr]   --> src/rendering/mod.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / fn render(pixels: &mut[u8],
[INFO] [stderr] 5  | |           bounds: (usize, usize),
[INFO] [stderr] 6  | |           upper_left: Complex<f64>,
[INFO] [stderr] 7  | |           lower_right: Complex<f64>) {
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_pair`
[INFO] [stderr]  --> src/parsing/mod.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn parse_pair<T: FromStr>(s: &str, separator: char) -> Option<(T, T)> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render`
[INFO] [stderr]   --> src/rendering/mod.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / fn render(pixels: &mut[u8],
[INFO] [stderr] 5  | |           bounds: (usize, usize),
[INFO] [stderr] 6  | |           upper_left: Complex<f64>,
[INFO] [stderr] 7  | |           lower_right: Complex<f64>) {
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.94s
[INFO] running `"docker" "inspect" "5f845b0c976c867185c6ea99a04b9cfd5ba1d99292359ea91a4b9d0d02023551"`
[INFO] running `"docker" "rm" "-f" "5f845b0c976c867185c6ea99a04b9cfd5ba1d99292359ea91a4b9d0d02023551"`
[INFO] [stdout] 5f845b0c976c867185c6ea99a04b9cfd5ba1d99292359ea91a4b9d0d02023551