[INFO] updating cached repository the7thobserver/Chip8_Emulator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/the7thobserver/Chip8_Emulator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/the7thobserver/Chip8_Emulator" "work/ex/beta-1.38-1/sources/1.37.0/gh/the7thobserver/Chip8_Emulator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/the7thobserver/Chip8_Emulator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/the7thobserver/Chip8_Emulator" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/the7thobserver/Chip8_Emulator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/the7thobserver/Chip8_Emulator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 51f31d867eb261d9596eae6d550cc009174a64e4
[INFO] sha for GitHub repo the7thobserver/Chip8_Emulator: 51f31d867eb261d9596eae6d550cc009174a64e4
[INFO] validating manifest of the7thobserver/Chip8_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 the7thobserver/Chip8_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 the7thobserver/Chip8_Emulator
[INFO] finished frobbing the7thobserver/Chip8_Emulator
[INFO] frobbed toml for the7thobserver/Chip8_Emulator written to work/ex/beta-1.38-1/sources/1.37.0/gh/the7thobserver/Chip8_Emulator/Cargo.toml
[INFO] started frobbing the7thobserver/Chip8_Emulator
[INFO] finished frobbing the7thobserver/Chip8_Emulator
[INFO] frobbed toml for the7thobserver/Chip8_Emulator written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/the7thobserver/Chip8_Emulator/Cargo.toml
[INFO] crate the7thobserver/Chip8_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 the7thobserver/Chip8_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/the7thobserver/Chip8_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] e0070dc31e3ec75e04f8a9f85b40bfba2884f873ee3468141ce954e464088d8f
[INFO] running `"docker" "start" "-a" "e0070dc31e3ec75e04f8a9f85b40bfba2884f873ee3468141ce954e464088d8f"`
[INFO] [stderr]    Compiling chip8_emulator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: expected one of `:` or `@`, found `)`
[INFO] [stderr]   --> src/cpu.rs:19:47
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn execute_instruction(&mut self, instruction) {
[INFO] [stderr]    |                                                  ^ expected one of `:` or `@` here
[INFO] [stderr]    |
[INFO] [stderr]    = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
[INFO] [stderr] help: if this was a parameter name, give it a type
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn execute_instruction(&mut self, instruction: TypeName) {
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] help: if this is a type, explicitly ignore the parameter name
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn execute_instruction(&mut self, _: instruction) {
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `chip8_emulator`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e0070dc31e3ec75e04f8a9f85b40bfba2884f873ee3468141ce954e464088d8f"`
[INFO] running `"docker" "rm" "-f" "e0070dc31e3ec75e04f8a9f85b40bfba2884f873ee3468141ce954e464088d8f"`
[INFO] [stdout] e0070dc31e3ec75e04f8a9f85b40bfba2884f873ee3468141ce954e464088d8f