[INFO] updating cached repository https://github.com/servo/webrender
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/servo/webrender
[INFO] [stderr]    b4f48313..71ed8e71  auto       -> auto
[INFO] [stderr]    b4f48313..71ed8e71  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 71ed8e71360b3f059451f4f664d6e1573e33652e
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:cargo-toml
[ERROR] caused by: invalid Cargo.toml syntax
[ERROR]