[INFO] crate simplesched 0.1.1 is already in cache
[INFO] extracting crate simplesched 0.1.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/simplesched/0.1.1
[INFO] extracting crate simplesched 0.1.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/simplesched/0.1.1
[INFO] validating manifest of simplesched-0.1.1 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 simplesched-0.1.1 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 simplesched-0.1.1
[INFO] finished frobbing simplesched-0.1.1
[INFO] frobbed toml for simplesched-0.1.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/simplesched/0.1.1/Cargo.toml
[INFO] started frobbing simplesched-0.1.1
[INFO] finished frobbing simplesched-0.1.1
[INFO] frobbed toml for simplesched-0.1.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/simplesched/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/simplesched/0.1.1/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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed