[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/beta-1.38-1/sources/1.37.0/gh/donachys/midpoint_displacement_2d_terrain"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/donachys/midpoint_displacement_2d_terrain'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/donachys/midpoint_displacement_2d_terrain" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/donachys/midpoint_displacement_2d_terrain"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 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 donachys/midpoint_displacement_2d_terrain 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 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/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/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" "+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 donachys/midpoint_displacement_2d_terrain 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/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=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] ef40dbd879608a57ebda01f92be963ff5354a23a0ee1b0f4f2e5a380b06bb724
[INFO] running `"docker" "start" "-a" "ef40dbd879608a57ebda01f92be963ff5354a23a0ee1b0f4f2e5a380b06bb724"`
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]    Compiling rayon v0.6.0
[INFO] [stderr]    Compiling flate2 v0.2.14
[INFO] [stderr]    Compiling png v0.5.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.10
[INFO] [stderr]    Compiling image v0.10.4
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 27.00s
[INFO] running `"docker" "inspect" "ef40dbd879608a57ebda01f92be963ff5354a23a0ee1b0f4f2e5a380b06bb724"`
[INFO] running `"docker" "rm" "-f" "ef40dbd879608a57ebda01f92be963ff5354a23a0ee1b0f4f2e5a380b06bb724"`
[INFO] [stdout] ef40dbd879608a57ebda01f92be963ff5354a23a0ee1b0f4f2e5a380b06bb724
[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/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=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] 8df2f6698860851b85c0e67dd60e0cb5a22d9243ac9574bc129e92c7a84bd402
[INFO] running `"docker" "start" "-a" "8df2f6698860851b85c0e67dd60e0cb5a22d9243ac9574bc129e92c7a84bd402"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "8df2f6698860851b85c0e67dd60e0cb5a22d9243ac9574bc129e92c7a84bd402"`
[INFO] running `"docker" "rm" "-f" "8df2f6698860851b85c0e67dd60e0cb5a22d9243ac9574bc129e92c7a84bd402"`
[INFO] [stdout] 8df2f6698860851b85c0e67dd60e0cb5a22d9243ac9574bc129e92c7a84bd402
[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/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=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] d116d2038a0ce24b6a340cd9f2b5666fb6cdb2b2fb7020811fb82708b27d7a1a
[INFO] running `"docker" "start" "-a" "d116d2038a0ce24b6a340cd9f2b5666fb6cdb2b2fb7020811fb82708b27d7a1a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/midpoint_displacement_2d-237f60f0d68c5a94
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d116d2038a0ce24b6a340cd9f2b5666fb6cdb2b2fb7020811fb82708b27d7a1a"`
[INFO] running `"docker" "rm" "-f" "d116d2038a0ce24b6a340cd9f2b5666fb6cdb2b2fb7020811fb82708b27d7a1a"`
[INFO] [stdout] d116d2038a0ce24b6a340cd9f2b5666fb6cdb2b2fb7020811fb82708b27d7a1a