[INFO] updating cached repository BKDevelop/rusty_chip8
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/BKDevelop/rusty_chip8
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/BKDevelop/rusty_chip8" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/BKDevelop/rusty_chip8"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/BKDevelop/rusty_chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/BKDevelop/rusty_chip8" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/BKDevelop/rusty_chip8"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/BKDevelop/rusty_chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 203ff3cac2b99db2e22bf68836071b31c153dd57
[INFO] sha for GitHub repo BKDevelop/rusty_chip8: 203ff3cac2b99db2e22bf68836071b31c153dd57
[INFO] validating manifest of BKDevelop/rusty_chip8 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of BKDevelop/rusty_chip8 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing BKDevelop/rusty_chip8
[INFO] finished frobbing BKDevelop/rusty_chip8
[INFO] frobbed toml for BKDevelop/rusty_chip8 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/BKDevelop/rusty_chip8/Cargo.toml
[INFO] started frobbing BKDevelop/rusty_chip8
[INFO] finished frobbing BKDevelop/rusty_chip8
[INFO] frobbed toml for BKDevelop/rusty_chip8 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/BKDevelop/rusty_chip8/Cargo.toml
[INFO] crate BKDevelop/rusty_chip8 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking BKDevelop/rusty_chip8 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-0/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/BKDevelop/rusty_chip8:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a96c09ebf018b88a725a43e6b1ec80bbc1ab566d4de56e855471bda5b638610d
[INFO] running `"docker" "start" "-a" "a96c09ebf018b88a725a43e6b1ec80bbc1ab566d4de56e855471bda5b638610d"`
[INFO] [stderr]     Checking rusty_chip8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `put`
[INFO] [stderr]   --> src/chip8/cpu/memory.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn put(mut self, position: u8, byte: u8) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `delay_timer`
[INFO] [stderr]   --> src/chip8/cpu/mod.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     delay_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sound_timer`
[INFO] [stderr]   --> src/chip8/cpu/mod.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `put`
[INFO] [stderr]   --> src/chip8/cpu/memory.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn put(mut self, position: u8, byte: u8) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `delay_timer`
[INFO] [stderr]   --> src/chip8/cpu/mod.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     delay_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sound_timer`
[INFO] [stderr]   --> src/chip8/cpu/mod.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "a96c09ebf018b88a725a43e6b1ec80bbc1ab566d4de56e855471bda5b638610d"`
[INFO] running `"docker" "rm" "-f" "a96c09ebf018b88a725a43e6b1ec80bbc1ab566d4de56e855471bda5b638610d"`
[INFO] [stdout] a96c09ebf018b88a725a43e6b1ec80bbc1ab566d4de56e855471bda5b638610d