[INFO] updating cached repository nnonchev/chip-8-emulator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nnonchev/chip-8-emulator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nnonchev/chip-8-emulator" "work/ex/beta-1.38-1/sources/1.37.0/gh/nnonchev/chip-8-emulator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nnonchev/chip-8-emulator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nnonchev/chip-8-emulator" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nnonchev/chip-8-emulator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nnonchev/chip-8-emulator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8f329c8573857a2a15c86849421b6dfbbe6827b2
[INFO] sha for GitHub repo nnonchev/chip-8-emulator: 8f329c8573857a2a15c86849421b6dfbbe6827b2
[INFO] validating manifest of nnonchev/chip-8-emulator 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 nnonchev/chip-8-emulator 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 nnonchev/chip-8-emulator
[INFO] finished frobbing nnonchev/chip-8-emulator
[INFO] frobbed toml for nnonchev/chip-8-emulator written to work/ex/beta-1.38-1/sources/1.37.0/gh/nnonchev/chip-8-emulator/Cargo.toml
[INFO] started frobbing nnonchev/chip-8-emulator
[INFO] finished frobbing nnonchev/chip-8-emulator
[INFO] frobbed toml for nnonchev/chip-8-emulator written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nnonchev/chip-8-emulator/Cargo.toml
[INFO] crate nnonchev/chip-8-emulator 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] testing nnonchev/chip-8-emulator against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nnonchev/chip-8-emulator:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5d9a51292d9501fbc9f4fda526a61f87165a3cc1ff3aab01496363426b7af6b2
[INFO] running `"docker" "start" "-a" "5d9a51292d9501fbc9f4fda526a61f87165a3cc1ff3aab01496363426b7af6b2"`
[INFO] [stderr]    Compiling chip_8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0425]: cannot find value `addr` in this scope
[INFO] [stderr]   --> src/main.rs:73:13
[INFO] [stderr]    |
[INFO] [stderr] 73 |             addr += (op3 as u16) << 0x04;
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `op3` in this scope
[INFO] [stderr]   --> src/main.rs:73:22
[INFO] [stderr]    |
[INFO] [stderr] 73 |             addr += (op3 as u16) << 0x04;
[INFO] [stderr]    |                      ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `addr` in this scope
[INFO] [stderr]   --> src/main.rs:74:13
[INFO] [stderr]    |
[INFO] [stderr] 74 |             addr += op4 as u16;
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `op4` in this scope
[INFO] [stderr]   --> src/main.rs:74:21
[INFO] [stderr]    |
[INFO] [stderr] 74 |             addr += op4 as u16;
[INFO] [stderr]    |                     ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `op4` in this scope
[INFO] [stderr]   --> src/main.rs:81:87
[INFO] [stderr]    |
[INFO] [stderr] 81 |             println!("op1: {:0x}, op2: {:0x}, op3: {:0x}, op4: {:0x}", op1, op2, op3, op4);
[INFO] [stderr]    |                                                                                       ^^^ help: a local variable with a similar name exists: `op1`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `chip_8`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5d9a51292d9501fbc9f4fda526a61f87165a3cc1ff3aab01496363426b7af6b2"`
[INFO] running `"docker" "rm" "-f" "5d9a51292d9501fbc9f4fda526a61f87165a3cc1ff3aab01496363426b7af6b2"`
[INFO] [stdout] 5d9a51292d9501fbc9f4fda526a61f87165a3cc1ff3aab01496363426b7af6b2