[INFO] updating cached repository maraisr/mar.fyi
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/maraisr/mar.fyi
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/maraisr/mar.fyi" "work/ex/beta-1.38-1/sources/1.37.0/gh/maraisr/mar.fyi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/maraisr/mar.fyi'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maraisr/mar.fyi" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maraisr/mar.fyi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maraisr/mar.fyi'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f3299b916b52be65e18106bb67cbac42849a421a
[INFO] sha for GitHub repo maraisr/mar.fyi: f3299b916b52be65e18106bb67cbac42849a421a
[INFO] validating manifest of maraisr/mar.fyi 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 maraisr/mar.fyi 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 maraisr/mar.fyi
[INFO] finished frobbing maraisr/mar.fyi
[INFO] frobbed toml for maraisr/mar.fyi written to work/ex/beta-1.38-1/sources/1.37.0/gh/maraisr/mar.fyi/Cargo.toml
[INFO] started frobbing maraisr/mar.fyi
[INFO] finished frobbing maraisr/mar.fyi
[INFO] frobbed toml for maraisr/mar.fyi written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maraisr/mar.fyi/Cargo.toml
[INFO] crate maraisr/mar.fyi 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 maraisr/mar.fyi 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-0/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/maraisr/mar.fyi:/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] 3f3976e6342d7c498869bf9fa6100d764036288414ede5635f8757127179c3c9
[INFO] running `"docker" "start" "-a" "3f3976e6342d7c498869bf9fa6100d764036288414ede5635f8757127179c3c9"`
[INFO] [stderr]    Compiling mar-fyi v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `app`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `index.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 `mar-fyi`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3f3976e6342d7c498869bf9fa6100d764036288414ede5635f8757127179c3c9"`
[INFO] running `"docker" "rm" "-f" "3f3976e6342d7c498869bf9fa6100d764036288414ede5635f8757127179c3c9"`
[INFO] [stdout] 3f3976e6342d7c498869bf9fa6100d764036288414ede5635f8757127179c3c9