[INFO] updating cached repository Krystex/Chip-8
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Krystex/Chip-8
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Krystex/Chip-8" "work/ex/beta-1.38-1/sources/1.37.0/gh/Krystex/Chip-8"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Krystex/Chip-8'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Krystex/Chip-8" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Krystex/Chip-8"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Krystex/Chip-8'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 55c126bb77a58276dccc1d4c5c57a4bd8670aa96
[INFO] sha for GitHub repo Krystex/Chip-8: 55c126bb77a58276dccc1d4c5c57a4bd8670aa96
[INFO] validating manifest of Krystex/Chip-8 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 Krystex/Chip-8 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 Krystex/Chip-8
[INFO] finished frobbing Krystex/Chip-8
[INFO] frobbed toml for Krystex/Chip-8 written to work/ex/beta-1.38-1/sources/1.37.0/gh/Krystex/Chip-8/Cargo.toml
[INFO] started frobbing Krystex/Chip-8
[INFO] finished frobbing Krystex/Chip-8
[INFO] frobbed toml for Krystex/Chip-8 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Krystex/Chip-8/Cargo.toml
[INFO] crate Krystex/Chip-8 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing Krystex/Chip-8 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Krystex/Chip-8:/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] 21daf21c5aba47c81ae8239da69fad40f0b83a3ca30c197eb8a6e2f2da2872d6
[INFO] running `"docker" "start" "-a" "21daf21c5aba47c81ae8239da69fad40f0b83a3ca30c197eb8a6e2f2da2872d6"`
[INFO] [stderr]    Compiling chip-8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:87:3
[INFO] [stderr]    |
[INFO] [stderr] 87 |         return 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:379:11
[INFO] [stderr]     |
[INFO] [stderr] 379 |             Shr(x, y) => {
[INFO] [stderr]     |                    ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]    --> src/main.rs:390:10
[INFO] [stderr]     |
[INFO] [stderr] 390 |                 let (val, overflowing) = (*self.reg(x)).overflowing_sub(*self.reg(y));
[INFO] [stderr]     |                      ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "21daf21c5aba47c81ae8239da69fad40f0b83a3ca30c197eb8a6e2f2da2872d6"`
[INFO] running `"docker" "rm" "-f" "21daf21c5aba47c81ae8239da69fad40f0b83a3ca30c197eb8a6e2f2da2872d6"`
[INFO] [stdout] 21daf21c5aba47c81ae8239da69fad40f0b83a3ca30c197eb8a6e2f2da2872d6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Krystex/Chip-8:/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] 7dabb4024c025a943aa370d01191895b200ade8ceabe5015e2ebb2a8d91b510f
[INFO] running `"docker" "start" "-a" "7dabb4024c025a943aa370d01191895b200ade8ceabe5015e2ebb2a8d91b510f"`
[INFO] [stderr]    Compiling chip-8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:87:3
[INFO] [stderr]    |
[INFO] [stderr] 87 |         return 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:379:11
[INFO] [stderr]     |
[INFO] [stderr] 379 |             Shr(x, y) => {
[INFO] [stderr]     |                    ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]    --> src/main.rs:390:10
[INFO] [stderr]     |
[INFO] [stderr] 390 |                 let (val, overflowing) = (*self.reg(x)).overflowing_sub(*self.reg(y));
[INFO] [stderr]     |                      ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `"docker" "inspect" "7dabb4024c025a943aa370d01191895b200ade8ceabe5015e2ebb2a8d91b510f"`
[INFO] running `"docker" "rm" "-f" "7dabb4024c025a943aa370d01191895b200ade8ceabe5015e2ebb2a8d91b510f"`
[INFO] [stdout] 7dabb4024c025a943aa370d01191895b200ade8ceabe5015e2ebb2a8d91b510f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Krystex/Chip-8:/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] 4e1d00618df9404785b9737d117d987e2e207adf1935c2fdf1c5f34d8fd55ae9
[INFO] running `"docker" "start" "-a" "4e1d00618df9404785b9737d117d987e2e207adf1935c2fdf1c5f34d8fd55ae9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chip_8-914df0831fcee3ad
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_bits ... ok
[INFO] [stdout] test instruction::test_instructions ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4e1d00618df9404785b9737d117d987e2e207adf1935c2fdf1c5f34d8fd55ae9"`
[INFO] running `"docker" "rm" "-f" "4e1d00618df9404785b9737d117d987e2e207adf1935c2fdf1c5f34d8fd55ae9"`
[INFO] [stdout] 4e1d00618df9404785b9737d117d987e2e207adf1935c2fdf1c5f34d8fd55ae9