[INFO] updating cached repository https://github.com/servo/servo
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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/servo
[INFO] [stderr]    694bb408cc..26eca4673f  auto            -> auto
[INFO] [stderr]    2d02f2b587..b3ac17b82f  master          -> master
[INFO] [stderr]  + 6180043baa...689c6596b8 try-taskcluster -> try-taskcluster  (forced update)
[INFO] [stderr]  + 75e405d355...fb27c325db try-wpt         -> try-wpt  (forced update)
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b3ac17b82f687561c4cb3c53a264a99789d4ca09
[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] note: run with `RUST_BACKTRACE=1` to display a backtrace.