[INFO] updating cached repository lvcq/leetcode
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lvcq/leetcode
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lvcq/leetcode" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/lvcq/leetcode"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/lvcq/leetcode'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lvcq/leetcode" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/lvcq/leetcode"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/lvcq/leetcode'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eb3ef11a0035dd62a5ea63953c933eb399ae9f75
[INFO] sha for GitHub repo lvcq/leetcode: eb3ef11a0035dd62a5ea63953c933eb399ae9f75
[INFO] validating manifest of lvcq/leetcode on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lvcq/leetcode on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lvcq/leetcode
[INFO] finished frobbing lvcq/leetcode
[INFO] frobbed toml for lvcq/leetcode written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/lvcq/leetcode/Cargo.toml
[INFO] started frobbing lvcq/leetcode
[INFO] finished frobbing lvcq/leetcode
[INFO] frobbed toml for lvcq/leetcode written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/lvcq/leetcode/Cargo.toml
[INFO] crate lvcq/leetcode already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking lvcq/leetcode against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-6/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/lvcq/leetcode:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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=forbid" "-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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 044e3c558cf812f68186905c0027e5251274ff1ebc53daf66c810c2b7a61c5ad
[INFO] running `"docker" "start" "-a" "044e3c558cf812f68186905c0027e5251274ff1ebc53daf66c810c2b7a61c5ad"`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]  --> src/four_sum.rs:1:49
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn four_sum(nums: Vec<i32>, target: i32) -> Vec<Vec<i32>> {
[INFO] [stderr]   |        --------                                 ^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found ()
[INFO] [stderr]   |        |
[INFO] [stderr]   |        this function's body doesn't return
[INFO] [stderr]   |
[INFO] [stderr]   = note: expected type `std::vec::Vec<std::vec::Vec<i32>>`
[INFO] [stderr]              found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `leetcode`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]  --> src/four_sum.rs:1:49
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn four_sum(nums: Vec<i32>, target: i32) -> Vec<Vec<i32>> {
[INFO] [stderr]   |        --------                                 ^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found ()
[INFO] [stderr]   |        |
[INFO] [stderr]   |        this function's body doesn't return
[INFO] [stderr]   |
[INFO] [stderr]   = note: expected type `std::vec::Vec<std::vec::Vec<i32>>`
[INFO] [stderr]              found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `leetcode`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "044e3c558cf812f68186905c0027e5251274ff1ebc53daf66c810c2b7a61c5ad"`
[INFO] running `"docker" "rm" "-f" "044e3c558cf812f68186905c0027e5251274ff1ebc53daf66c810c2b7a61c5ad"`
[INFO] [stdout] 044e3c558cf812f68186905c0027e5251274ff1ebc53daf66c810c2b7a61c5ad