[INFO] updating cached repository https://github.com/ChristianPomales/rust_chip8_emu
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 376466b9a6090517d46a4dba3ebc171be1b1e2a5
[INFO] testing ChristianPomales/rust_chip8_emu against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianPomales%2Frust_chip8_emu" "work/builds/worker-8/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChristianPomales/rust_chip8_emu on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ChristianPomales/rust_chip8_emu
[INFO] finished tweaking git repo https://github.com/ChristianPomales/rust_chip8_emu
[INFO] tweaked toml for git repo https://github.com/ChristianPomales/rust_chip8_emu written to work/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/ChristianPomales/rust_chip8_emu already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] c4bc096261b9bb3ecfc2b9283f998906284803a60ba7ce6941ff247e026f0d54
[INFO] running `"docker" "start" "-a" "c4bc096261b9bb3ecfc2b9283f998906284803a60ba7ce6941ff247e026f0d54"`
[INFO] [stderr]    Compiling chip8_emu v0.1.0 (/opt/rustwide/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]     Finished dev [unoptimized + debuginfo] target(s) in 7.19s
[INFO] running `"docker" "inspect" "c4bc096261b9bb3ecfc2b9283f998906284803a60ba7ce6941ff247e026f0d54"`
[INFO] running `"docker" "rm" "-f" "c4bc096261b9bb3ecfc2b9283f998906284803a60ba7ce6941ff247e026f0d54"`
[INFO] [stdout] c4bc096261b9bb3ecfc2b9283f998906284803a60ba7ce6941ff247e026f0d54
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 24243646fe16a019cf45500a875439450a16a7d8eef97fc2431fec3c9c18a4e4
[INFO] running `"docker" "start" "-a" "24243646fe16a019cf45500a875439450a16a7d8eef97fc2431fec3c9c18a4e4"`
[INFO] [stderr]    Compiling chip8_emu v0.1.0 (/opt/rustwide/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]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `"docker" "inspect" "24243646fe16a019cf45500a875439450a16a7d8eef97fc2431fec3c9c18a4e4"`
[INFO] running `"docker" "rm" "-f" "24243646fe16a019cf45500a875439450a16a7d8eef97fc2431fec3c9c18a4e4"`
[INFO] [stdout] 24243646fe16a019cf45500a875439450a16a7d8eef97fc2431fec3c9c18a4e4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 9cb148ac766b693e1fe8824744eb9d20ed3962f88cb6990eef7a2eafe46e5270
[INFO] running `"docker" "start" "-a" "9cb148ac766b693e1fe8824744eb9d20ed3962f88cb6990eef7a2eafe46e5270"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chip8_emu-94f494cd4a082afb
[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" "9cb148ac766b693e1fe8824744eb9d20ed3962f88cb6990eef7a2eafe46e5270"`
[INFO] running `"docker" "rm" "-f" "9cb148ac766b693e1fe8824744eb9d20ed3962f88cb6990eef7a2eafe46e5270"`
[INFO] [stdout] 9cb148ac766b693e1fe8824744eb9d20ed3962f88cb6990eef7a2eafe46e5270