[INFO] updating cached repository lyapinvi/rust-sandbox-mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lyapinvi/rust-sandbox-mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lyapinvi/rust-sandbox-mandelbrot" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/lyapinvi/rust-sandbox-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/lyapinvi/rust-sandbox-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lyapinvi/rust-sandbox-mandelbrot" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/lyapinvi/rust-sandbox-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/lyapinvi/rust-sandbox-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4a6df888bf03834c80a417c04096986dc31b2d33
[INFO] sha for GitHub repo lyapinvi/rust-sandbox-mandelbrot: 4a6df888bf03834c80a417c04096986dc31b2d33
[INFO] validating manifest of lyapinvi/rust-sandbox-mandelbrot on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lyapinvi/rust-sandbox-mandelbrot on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lyapinvi/rust-sandbox-mandelbrot
[INFO] finished frobbing lyapinvi/rust-sandbox-mandelbrot
[INFO] frobbed toml for lyapinvi/rust-sandbox-mandelbrot written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/lyapinvi/rust-sandbox-mandelbrot/Cargo.toml
[INFO] started frobbing lyapinvi/rust-sandbox-mandelbrot
[INFO] finished frobbing lyapinvi/rust-sandbox-mandelbrot
[INFO] frobbed toml for lyapinvi/rust-sandbox-mandelbrot written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/lyapinvi/rust-sandbox-mandelbrot/Cargo.toml
[INFO] crate lyapinvi/rust-sandbox-mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/lyapinvi/rust-sandbox-mandelbrot/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking lyapinvi/rust-sandbox-mandelbrot against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/lyapinvi/rust-sandbox-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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cb19e633b3438b4224e171205b1ec47488d20a162c874f332aef4f915fe7ff2b
[INFO] running `"docker" "start" "-a" "cb19e633b3438b4224e171205b1ec47488d20a162c874f332aef4f915fe7ff2b"`
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: expected one of `!`, `.`, `::`, `?`, `{`, or an operator, found `,`
[INFO] [stderr]   --> src/main.rs:76:34
[INFO] [stderr]    |
[INFO] [stderr] 76 |         for column in 0 .. bounds,0 {
[INFO] [stderr]    |                                  ^ expected one of `!`, `.`, `::`, `?`, `{`, or an operator here
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `!`, `.`, `::`, `?`, `{`, or an operator, found `,`
[INFO] [stderr]   --> src/main.rs:76:34
[INFO] [stderr]    |
[INFO] [stderr] 76 |         for column in 0 .. bounds,0 {
[INFO] [stderr]    |                                  ^ expected one of `!`, `.`, `::`, `?`, `{`, or an operator here
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `image::ColorType`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use image::ColorType;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `image::png::PNGEncoder`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use image::png::PNGEncoder;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:89:74
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn write_image(filename: &str, pixels: &[u8], bounds: (usize, usize)) -> Result<(), std::io::Error>
[INFO] [stderr]    |    -----------                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found ()
[INFO] [stderr]    |    |
[INFO] [stderr]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<(), std::io::Error>`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `mandelbrot`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `image::ColorType`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use image::ColorType;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `image::png::PNGEncoder`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use image::png::PNGEncoder;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:89:74
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn write_image(filename: &str, pixels: &[u8], bounds: (usize, usize)) -> Result<(), std::io::Error>
[INFO] [stderr]    |    -----------                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found ()
[INFO] [stderr]    |    |
[INFO] [stderr]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<(), std::io::Error>`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `mandelbrot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "cb19e633b3438b4224e171205b1ec47488d20a162c874f332aef4f915fe7ff2b"`
[INFO] running `"docker" "rm" "-f" "cb19e633b3438b4224e171205b1ec47488d20a162c874f332aef4f915fe7ff2b"`
[INFO] [stdout] cb19e633b3438b4224e171205b1ec47488d20a162c874f332aef4f915fe7ff2b