[INFO] updating cached repository mwalczyk/gray_code_rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mwalczyk/gray_code_rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mwalczyk/gray_code_rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/mwalczyk/gray_code_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/mwalczyk/gray_code_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mwalczyk/gray_code_rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mwalczyk/gray_code_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mwalczyk/gray_code_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5f2f1d79e5be46f0bb24344cc18bdaa3d4d54a2d
[INFO] sha for GitHub repo mwalczyk/gray_code_rs: 5f2f1d79e5be46f0bb24344cc18bdaa3d4d54a2d
[INFO] validating manifest of mwalczyk/gray_code_rs on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mwalczyk/gray_code_rs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mwalczyk/gray_code_rs
[INFO] finished frobbing mwalczyk/gray_code_rs
[INFO] frobbed toml for mwalczyk/gray_code_rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/mwalczyk/gray_code_rs/Cargo.toml
[INFO] started frobbing mwalczyk/gray_code_rs
[INFO] finished frobbing mwalczyk/gray_code_rs
[INFO] frobbed toml for mwalczyk/gray_code_rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mwalczyk/gray_code_rs/Cargo.toml
[INFO] crate mwalczyk/gray_code_rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mwalczyk/gray_code_rs against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mwalczyk/gray_code_rs:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] d34f0efea576f4eabb0c1e60b6e61ef2181ba92b9d556a24d1595653aef0299f
[INFO] running `"docker" "start" "-a" "d34f0efea576f4eabb0c1e60b6e61ef2181ba92b9d556a24d1595653aef0299f"`
[INFO] [stderr]    Compiling inflate v0.3.3
[INFO] [stderr]    Compiling deflate v0.7.17
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling num-bigint v0.1.40
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling num-rational v0.1.39
[INFO] [stderr]    Compiling num v0.1.40
[INFO] [stderr]    Compiling jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling image v0.17.0
[INFO] [stderr]    Compiling rust-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `orientation`
[INFO] [stderr]   --> src/main.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let orientation = length;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_orientation`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/main.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |         for (x, y, pixel) in image_buffer.enumerate_pixels_mut() {
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HORIZONTAL`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     HORIZONTAL
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.69s
[INFO] running `"docker" "inspect" "d34f0efea576f4eabb0c1e60b6e61ef2181ba92b9d556a24d1595653aef0299f"`
[INFO] running `"docker" "rm" "-f" "d34f0efea576f4eabb0c1e60b6e61ef2181ba92b9d556a24d1595653aef0299f"`
[INFO] [stdout] d34f0efea576f4eabb0c1e60b6e61ef2181ba92b9d556a24d1595653aef0299f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mwalczyk/gray_code_rs:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 40b1b394d1e58abde13acd4a73171dea8ac958b082404436d388cfc354b680d6
[INFO] running `"docker" "start" "-a" "40b1b394d1e58abde13acd4a73171dea8ac958b082404436d388cfc354b680d6"`
[INFO] [stderr]    Compiling rust-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `orientation`
[INFO] [stderr]   --> src/main.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let orientation = length;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_orientation`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/main.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |         for (x, y, pixel) in image_buffer.enumerate_pixels_mut() {
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HORIZONTAL`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     HORIZONTAL
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "40b1b394d1e58abde13acd4a73171dea8ac958b082404436d388cfc354b680d6"`
[INFO] running `"docker" "rm" "-f" "40b1b394d1e58abde13acd4a73171dea8ac958b082404436d388cfc354b680d6"`
[INFO] [stdout] 40b1b394d1e58abde13acd4a73171dea8ac958b082404436d388cfc354b680d6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mwalczyk/gray_code_rs:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 5f441ee94640505cdd1006d4cc95505302f15e3289c89363a3be0214817dff3e
[INFO] running `"docker" "start" "-a" "5f441ee94640505cdd1006d4cc95505302f15e3289c89363a3be0214817dff3e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_test-a9628783d406d831
[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" "5f441ee94640505cdd1006d4cc95505302f15e3289c89363a3be0214817dff3e"`
[INFO] running `"docker" "rm" "-f" "5f441ee94640505cdd1006d4cc95505302f15e3289c89363a3be0214817dff3e"`
[INFO] [stdout] 5f441ee94640505cdd1006d4cc95505302f15e3289c89363a3be0214817dff3e