[INFO] updating cached repository Gitlings/algorithms-and-data-structures
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Gitlings/algorithms-and-data-structures
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Gitlings/algorithms-and-data-structures" "work/ex/beta-1.38-1/sources/1.37.0/gh/Gitlings/algorithms-and-data-structures"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Gitlings/algorithms-and-data-structures'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Gitlings/algorithms-and-data-structures" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Gitlings/algorithms-and-data-structures"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Gitlings/algorithms-and-data-structures'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 28a20663f6b13989e8e730c62815f4ef6bfffe4b
[INFO] sha for GitHub repo Gitlings/algorithms-and-data-structures: 28a20663f6b13989e8e730c62815f4ef6bfffe4b
[INFO] validating manifest of Gitlings/algorithms-and-data-structures 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 Gitlings/algorithms-and-data-structures 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 Gitlings/algorithms-and-data-structures
[INFO] finished frobbing Gitlings/algorithms-and-data-structures
[INFO] frobbed toml for Gitlings/algorithms-and-data-structures written to work/ex/beta-1.38-1/sources/1.37.0/gh/Gitlings/algorithms-and-data-structures/Cargo.toml
[INFO] started frobbing Gitlings/algorithms-and-data-structures
[INFO] finished frobbing Gitlings/algorithms-and-data-structures
[INFO] frobbed toml for Gitlings/algorithms-and-data-structures written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Gitlings/algorithms-and-data-structures/Cargo.toml
[INFO] crate Gitlings/algorithms-and-data-structures 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 Gitlings/algorithms-and-data-structures 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Gitlings/algorithms-and-data-structures:/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] ca3828465ef35f3630e063d568513fd5e98ec885ec029f29fe0650178f37e4d9
[INFO] running `"docker" "start" "-a" "ca3828465ef35f3630e063d568513fd5e98ec885ec029f29fe0650178f37e4d9"`
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `base::Sorts`
[INFO] [stderr]  --> src/sorting/test.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use base::Sorts;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `sorting_test`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/sorting/test.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 `hello_cargo`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "ca3828465ef35f3630e063d568513fd5e98ec885ec029f29fe0650178f37e4d9"`
[INFO] running `"docker" "rm" "-f" "ca3828465ef35f3630e063d568513fd5e98ec885ec029f29fe0650178f37e4d9"`
[INFO] [stdout] ca3828465ef35f3630e063d568513fd5e98ec885ec029f29fe0650178f37e4d9