[INFO] updating cached repository VitalyAnkh/learn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/VitalyAnkh/learn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/VitalyAnkh/learn" "work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/VitalyAnkh/learn"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/VitalyAnkh/learn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/VitalyAnkh/learn" "work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/VitalyAnkh/learn"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/VitalyAnkh/learn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7a3fd702a4383c9d948cd8010fbbf46156504a32
[INFO] sha for GitHub repo VitalyAnkh/learn: 7a3fd702a4383c9d948cd8010fbbf46156504a32
[INFO] validating manifest of VitalyAnkh/learn on toolchain master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to build-fail:broken
[ERROR] caused by: missing Cargo.toml for VitalyAnkh/learn
[ERROR]