[INFO] updating cached repository daveallie/rust_watcher
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/daveallie/rust_watcher
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/daveallie/rust_watcher" "work/ex/clippy-test-run/sources/stable/gh/daveallie/rust_watcher"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/daveallie/rust_watcher'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/daveallie/rust_watcher" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/daveallie/rust_watcher"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/daveallie/rust_watcher'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 586fa61a590b8dfbb97fa1261a3fc4272bb62106
[INFO] sha for GitHub repo daveallie/rust_watcher: 586fa61a590b8dfbb97fa1261a3fc4272bb62106
[INFO] validating manifest of daveallie/rust_watcher on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of daveallie/rust_watcher on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing daveallie/rust_watcher
[INFO] finished frobbing daveallie/rust_watcher
[INFO] frobbed toml for daveallie/rust_watcher written to work/ex/clippy-test-run/sources/stable/gh/daveallie/rust_watcher/Cargo.toml
[INFO] started frobbing daveallie/rust_watcher
[INFO] finished frobbing daveallie/rust_watcher
[INFO] frobbed toml for daveallie/rust_watcher written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/daveallie/rust_watcher/Cargo.toml
[INFO] crate daveallie/rust_watcher has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/daveallie/rust_watcher/Cargo.lock needs to be updated but --locked was passed to prevent this
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed