[INFO] updating cached repository anymost/rustapp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/anymost/rustapp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/anymost/rustapp" "work/ex/beta-1.37-6/sources/1.36.0/gh/anymost/rustapp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/anymost/rustapp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/anymost/rustapp" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/anymost/rustapp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/anymost/rustapp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 486ef4d3de2942d7bfa6d59cf16a8b7d3bdba9d8
[INFO] sha for GitHub repo anymost/rustapp: 486ef4d3de2942d7bfa6d59cf16a8b7d3bdba9d8
[INFO] validating manifest of anymost/rustapp 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 anymost/rustapp 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 anymost/rustapp
[INFO] finished frobbing anymost/rustapp
[INFO] frobbed toml for anymost/rustapp written to work/ex/beta-1.37-6/sources/1.36.0/gh/anymost/rustapp/Cargo.toml
[INFO] started frobbing anymost/rustapp
[INFO] finished frobbing anymost/rustapp
[INFO] frobbed toml for anymost/rustapp written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/anymost/rustapp/Cargo.toml
[INFO] crate anymost/rustapp 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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing anymost/rustapp 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-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/anymost/rustapp:/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] e7ee16aa13ed741d5da20a369f7dd6701071b3b7e367f80fc9eb176f729e9163
[INFO] running `"docker" "start" "-a" "e7ee16aa13ed741d5da20a369f7dd6701071b3b7e367f80fc9eb176f729e9163"`
[INFO] [stderr]    Compiling rustapp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `rustapp`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/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 `rustapp`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e7ee16aa13ed741d5da20a369f7dd6701071b3b7e367f80fc9eb176f729e9163"`
[INFO] running `"docker" "rm" "-f" "e7ee16aa13ed741d5da20a369f7dd6701071b3b7e367f80fc9eb176f729e9163"`
[INFO] [stdout] e7ee16aa13ed741d5da20a369f7dd6701071b3b7e367f80fc9eb176f729e9163