[INFO] updating cached repository tazjin/carnix
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tazjin/carnix
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tazjin/carnix" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tazjin/carnix"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tazjin/carnix'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tazjin/carnix" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tazjin/carnix"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tazjin/carnix'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 147b1c219db7e17adac6a4c2890c1c32559bfd59
[INFO] sha for GitHub repo tazjin/carnix: 147b1c219db7e17adac6a4c2890c1c32559bfd59
[INFO] validating manifest of tazjin/carnix on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:cargo-toml
[ERROR] caused by: missing Cargo.toml for tazjin/carnix
[ERROR]