[INFO] updating cached repository ChristianPomales/rust_chip8_emu
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ChristianPomales/rust_chip8_emu
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ChristianPomales/rust_chip8_emu" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/ChristianPomales/rust_chip8_emu"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/ChristianPomales/rust_chip8_emu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ChristianPomales/rust_chip8_emu" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/ChristianPomales/rust_chip8_emu"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/ChristianPomales/rust_chip8_emu'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 376466b9a6090517d46a4dba3ebc171be1b1e2a5
[INFO] sha for GitHub repo ChristianPomales/rust_chip8_emu: 376466b9a6090517d46a4dba3ebc171be1b1e2a5
[INFO] validating manifest of ChristianPomales/rust_chip8_emu on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ChristianPomales/rust_chip8_emu on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ChristianPomales/rust_chip8_emu
[INFO] finished frobbing ChristianPomales/rust_chip8_emu
[INFO] frobbed toml for ChristianPomales/rust_chip8_emu written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/ChristianPomales/rust_chip8_emu/Cargo.toml
[INFO] started frobbing ChristianPomales/rust_chip8_emu
[INFO] finished frobbing ChristianPomales/rust_chip8_emu
[INFO] frobbed toml for ChristianPomales/rust_chip8_emu written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/ChristianPomales/rust_chip8_emu/Cargo.toml
[INFO] crate ChristianPomales/rust_chip8_emu already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking ChristianPomales/rust_chip8_emu against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-5/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/ChristianPomales/rust_chip8_emu:/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=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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ad9915c28206e62c2b06faff3fb933f315f8616a364be08b9432feef84f2d17d
[INFO] running `"docker" "start" "-a" "ad9915c28206e62c2b06faff3fb933f315f8616a364be08b9432feef84f2d17d"`
[INFO] [stderr]     Checking chip8_emu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/chip8.rs:336:21
[INFO] [stderr]     |
[INFO] [stderr] 336 |                 let mut masked_rn: u8 = (rn) & (self.opcode & 0x0FF) as u8;
[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/chip8.rs:336:21
[INFO] [stderr]     |
[INFO] [stderr] 336 |                 let mut masked_rn: u8 = (rn) & (self.opcode & 0x0FF) as u8;
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "ad9915c28206e62c2b06faff3fb933f315f8616a364be08b9432feef84f2d17d"`
[INFO] running `"docker" "rm" "-f" "ad9915c28206e62c2b06faff3fb933f315f8616a364be08b9432feef84f2d17d"`
[INFO] [stdout] ad9915c28206e62c2b06faff3fb933f315f8616a364be08b9432feef84f2d17d