[INFO] updating cached repository jez/multi-grep
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jez/multi-grep
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jez/multi-grep" "work/ex/beta-1.38-1/sources/1.37.0/gh/jez/multi-grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jez/multi-grep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jez/multi-grep" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jez/multi-grep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jez/multi-grep'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce4e6ff406938d0d4dcf4f1db154c6213e868199
[INFO] sha for GitHub repo jez/multi-grep: ce4e6ff406938d0d4dcf4f1db154c6213e868199
[INFO] validating manifest of jez/multi-grep on toolchain 1.37.0
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:cargo-toml
[ERROR] caused by: missing Cargo.toml for jez/multi-grep
[ERROR]