[INFO] crate yowsl 0.1.3 is already in cache
[INFO] extracting crate yowsl 0.1.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/yowsl/0.1.3
[INFO] extracting crate yowsl 0.1.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/yowsl/0.1.3
[INFO] validating manifest of yowsl-0.1.3 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 yowsl-0.1.3 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 yowsl-0.1.3
[INFO] finished frobbing yowsl-0.1.3
[INFO] frobbed toml for yowsl-0.1.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/yowsl/0.1.3/Cargo.toml
[INFO] started frobbing yowsl-0.1.3
[INFO] finished frobbing yowsl-0.1.3
[INFO] frobbed toml for yowsl-0.1.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/yowsl/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 yowsl-0.1.3 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/yowsl/0.1.3:/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] b15d940bdf5d1a37a08d09df110a34bf6f833e7ba60c8eaf238bfea66fc87237
[INFO] running `"docker" "start" "-a" "b15d940bdf5d1a37a08d09df110a34bf6f833e7ba60c8eaf238bfea66fc87237"`
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling backtrace v0.3.35
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling yowsl v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `yowsl`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/bin/yowsl/main.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `yowsl`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b15d940bdf5d1a37a08d09df110a34bf6f833e7ba60c8eaf238bfea66fc87237"`
[INFO] running `"docker" "rm" "-f" "b15d940bdf5d1a37a08d09df110a34bf6f833e7ba60c8eaf238bfea66fc87237"`
[INFO] [stdout] b15d940bdf5d1a37a08d09df110a34bf6f833e7ba60c8eaf238bfea66fc87237