[INFO] updating cached repository custommonkey/scope
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/custommonkey/scope
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/custommonkey/scope" "work/ex/beta-1.38-1/sources/1.37.0/gh/custommonkey/scope"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/custommonkey/scope'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/custommonkey/scope" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/custommonkey/scope"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/custommonkey/scope'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e22a8aca26f4016da3e67a00db7284b6d0178fcb
[INFO] sha for GitHub repo custommonkey/scope: e22a8aca26f4016da3e67a00db7284b6d0178fcb
[INFO] validating manifest of custommonkey/scope 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 custommonkey/scope 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 custommonkey/scope
[INFO] finished frobbing custommonkey/scope
[INFO] frobbed toml for custommonkey/scope written to work/ex/beta-1.38-1/sources/1.37.0/gh/custommonkey/scope/Cargo.toml
[INFO] started frobbing custommonkey/scope
[INFO] finished frobbing custommonkey/scope
[INFO] frobbed toml for custommonkey/scope written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/custommonkey/scope/Cargo.toml
[INFO] crate custommonkey/scope 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 custommonkey/scope against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/custommonkey/scope:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0e294b7461458e2d471c78edf784d6d99821c16d55bd26ebc98b3baf1f95c224
[INFO] running `"docker" "start" "-a" "0e294b7461458e2d471c78edf784d6d99821c16d55bd26ebc98b3baf1f95c224"`
[INFO] [stderr]    Compiling num-traits v0.1.34
[INFO] [stderr]    Compiling serde v0.8.0
[INFO] [stderr]    Compiling gcc v0.3.32
[INFO] [stderr]    Compiling libc v0.2.14
[INFO] [stderr]    Compiling crossbeam v0.2.9
[INFO] [stderr]    Compiling rustc-serialize v0.3.19
[INFO] [stderr]    Compiling rustc-demangle v0.1.1
[INFO] [stderr]    Compiling scope v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: couldn't read build.rs: No such file or directory (os error 2)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `scope`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "0e294b7461458e2d471c78edf784d6d99821c16d55bd26ebc98b3baf1f95c224"`
[INFO] running `"docker" "rm" "-f" "0e294b7461458e2d471c78edf784d6d99821c16d55bd26ebc98b3baf1f95c224"`
[INFO] [stdout] 0e294b7461458e2d471c78edf784d6d99821c16d55bd26ebc98b3baf1f95c224