[INFO] updating cached repository donachys/midpoint_displacement_2d_terrain
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/donachys/midpoint_displacement_2d_terrain
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/donachys/midpoint_displacement_2d_terrain" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/donachys/midpoint_displacement_2d_terrain"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/donachys/midpoint_displacement_2d_terrain'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/donachys/midpoint_displacement_2d_terrain" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/donachys/midpoint_displacement_2d_terrain"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/donachys/midpoint_displacement_2d_terrain'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 649e1ef34a71b4ec2d4b077d7a52cc16c05d5cdd
[INFO] sha for GitHub repo donachys/midpoint_displacement_2d_terrain: 649e1ef34a71b4ec2d4b077d7a52cc16c05d5cdd
[INFO] validating manifest of donachys/midpoint_displacement_2d_terrain on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of donachys/midpoint_displacement_2d_terrain on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing donachys/midpoint_displacement_2d_terrain
[INFO] finished frobbing donachys/midpoint_displacement_2d_terrain
[INFO] frobbed toml for donachys/midpoint_displacement_2d_terrain written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/donachys/midpoint_displacement_2d_terrain/Cargo.toml
[INFO] started frobbing donachys/midpoint_displacement_2d_terrain
[INFO] finished frobbing donachys/midpoint_displacement_2d_terrain
[INFO] frobbed toml for donachys/midpoint_displacement_2d_terrain written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/donachys/midpoint_displacement_2d_terrain/Cargo.toml
[INFO] crate donachys/midpoint_displacement_2d_terrain already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking donachys/midpoint_displacement_2d_terrain against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-6/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/donachys/midpoint_displacement_2d_terrain:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ac9a5f652bfec33585cab7f1dd0d6a772f323cbd8cbd1a9c681057ab1162d048
[INFO] running `"docker" "start" "-a" "ac9a5f652bfec33585cab7f1dd0d6a772f323cbd8cbd1a9c681057ab1162d048"`
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]     Checking flate2 v0.2.14
[INFO] [stderr]     Checking png v0.5.2
[INFO] [stderr]     Checking image v0.10.4
[INFO] [stderr]     Checking midpoint_displacement_2d v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let mut pixel = imgbuf.get_pixel_mut(wheel_center.x, wheel_center.y);
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 let mut pixel = imgbuf.get_pixel_mut(point.x, point.y);
[INFO] [stderr]    |                     ----^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:92:25
[INFO] [stderr]    |
[INFO] [stderr] 92 |                     let mut pixel = imgbuf.get_pixel_mut(point.x, point.y);
[INFO] [stderr]    |                         ----^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:97:29
[INFO] [stderr]    |
[INFO] [stderr] 97 |                         let mut vert_pixel = imgbuf.get_pixel_mut(vert_point.x, vert_point.y);
[INFO] [stderr]    |                             ----^^^^^^^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let mut pixel = imgbuf.get_pixel_mut(wheel_center.x, wheel_center.y);
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 let mut pixel = imgbuf.get_pixel_mut(point.x, point.y);
[INFO] [stderr]    |                     ----^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:92:25
[INFO] [stderr]    |
[INFO] [stderr] 92 |                     let mut pixel = imgbuf.get_pixel_mut(point.x, point.y);
[INFO] [stderr]    |                         ----^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:97:29
[INFO] [stderr]    |
[INFO] [stderr] 97 |                         let mut vert_pixel = imgbuf.get_pixel_mut(vert_point.x, vert_point.y);
[INFO] [stderr]    |                             ----^^^^^^^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.40s
[INFO] running `"docker" "inspect" "ac9a5f652bfec33585cab7f1dd0d6a772f323cbd8cbd1a9c681057ab1162d048"`
[INFO] running `"docker" "rm" "-f" "ac9a5f652bfec33585cab7f1dd0d6a772f323cbd8cbd1a9c681057ab1162d048"`
[INFO] [stdout] ac9a5f652bfec33585cab7f1dd0d6a772f323cbd8cbd1a9c681057ab1162d048