[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]  + 2eff5ae254...6bc4a7df24 auto            -> auto  (forced update)
[INFO] [stderr]    ea7e753cea..6bc4a7df24  master          -> master
[INFO] [stderr]  + ba036fecb9...10793dd949 smup            -> smup  (forced update)
[INFO] [stderr]  + 427a09bb21...2254db22fd try             -> try  (forced update)
[INFO] [stderr]  + d090bddd44...38b1914df4 try-linux       -> try-linux  (forced update)
[INFO] [stderr]  + 7786c9a2d0...43977cd02f try-taskcluster -> try-taskcluster  (forced update)
[INFO] [stderr]  + ecf2988bd7...ff00e5fc48 try-wpt         -> try-wpt  (forced update)
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6bc4a7df24df6c7ed41f2ee4c2d38a282760c2b6
[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.