[INFO] updating cached repository mseitzer/gbemu
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mseitzer/gbemu
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mseitzer/gbemu" "work/ex/beta-1.37-6/sources/1.36.0/gh/mseitzer/gbemu"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/mseitzer/gbemu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mseitzer/gbemu" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mseitzer/gbemu"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mseitzer/gbemu'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ca06e0fef1f4182a807ffc8d5c4b4e04d5dee0c6
[INFO] sha for GitHub repo mseitzer/gbemu: ca06e0fef1f4182a807ffc8d5c4b4e04d5dee0c6
[INFO] validating manifest of mseitzer/gbemu on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mseitzer/gbemu on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mseitzer/gbemu
[INFO] finished frobbing mseitzer/gbemu
[INFO] frobbed toml for mseitzer/gbemu written to work/ex/beta-1.37-6/sources/1.36.0/gh/mseitzer/gbemu/Cargo.toml
[INFO] started frobbing mseitzer/gbemu
[INFO] finished frobbing mseitzer/gbemu
[INFO] frobbed toml for mseitzer/gbemu written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mseitzer/gbemu/Cargo.toml
[INFO] crate mseitzer/gbemu already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mseitzer/gbemu against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/mseitzer/gbemu:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 06a214bec7c6493aaed200ebb5cd64f5b9f5b0a404de5e3a66e90f68b6eac9d7
[INFO] running `"docker" "start" "-a" "06a214bec7c6493aaed200ebb5cd64f5b9f5b0a404de5e3a66e90f68b6eac9d7"`
[INFO] [stderr]    Compiling rustc-serialize v0.3.19
[INFO] [stderr]    Compiling sdl2-sys v0.8.1
[INFO] [stderr]    Compiling argparse v0.2.1
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling num-iter v0.1.32
[INFO] [stderr] error[E0642]: patterns aren't allowed in methods without bodies
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.19/src/serialize.rs:147:45
[INFO] [stderr]     |
[INFO] [stderr] 147 |                                             &f_name: &str,
[INFO] [stderr]     |                                             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0642`.
[INFO] [stderr] error: Could not compile `rustc-serialize`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "06a214bec7c6493aaed200ebb5cd64f5b9f5b0a404de5e3a66e90f68b6eac9d7"`
[INFO] running `"docker" "rm" "-f" "06a214bec7c6493aaed200ebb5cd64f5b9f5b0a404de5e3a66e90f68b6eac9d7"`
[INFO] [stdout] 06a214bec7c6493aaed200ebb5cd64f5b9f5b0a404de5e3a66e90f68b6eac9d7