[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/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/Krystex/Chip-8"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/Krystex/Chip-8'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Krystex/Chip-8" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/Krystex/Chip-8"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/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 master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Krystex/Chip-8 on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "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/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/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/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/Krystex/Chip-8/Cargo.toml
[INFO] crate Krystex/Chip-8 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Krystex/Chip-8 against master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-0/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/Krystex/Chip-8:/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" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b921e3cf4d16a3fb0808a59d986de2069b5525191c0bc9df9bf25a1caa1b4c4f
[INFO] running `"docker" "start" "-a" "b921e3cf4d16a3fb0808a59d986de2069b5525191c0bc9df9bf25a1caa1b4c4f"`
[INFO] [stderr]     Checking 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] 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 0.94s
[INFO] running `"docker" "inspect" "b921e3cf4d16a3fb0808a59d986de2069b5525191c0bc9df9bf25a1caa1b4c4f"`
[INFO] running `"docker" "rm" "-f" "b921e3cf4d16a3fb0808a59d986de2069b5525191c0bc9df9bf25a1caa1b4c4f"`
[INFO] [stdout] b921e3cf4d16a3fb0808a59d986de2069b5525191c0bc9df9bf25a1caa1b4c4f