[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]  + d115dfa44a...05cee49528 auto              -> auto  (forced update)
[INFO] [stderr]    cac32867ba..86c028e610  background-image  -> background-image
[INFO] [stderr]    de610e4d75..1c379c8728  jdm-patch-31      -> jdm-patch-31
[INFO] [stderr]  * [new branch]            jdm-revert1       -> jdm-revert1
[INFO] [stderr]  * [new branch]            jdm-revert2       -> jdm-revert2
[INFO] [stderr]  * [new branch]            jdm-revert3       -> jdm-revert3
[INFO] [stderr]  * [new branch]            jdm-revert4       -> jdm-revert4
[INFO] [stderr]    904fcb4317..eb8fbddca9  master            -> master
[INFO] [stderr]    794528fc21..7bf1a5d25b  try-without-merge -> try-without-merge
[INFO] [stderr]  + 92a200d724...2f1360c1ca try-wpt           -> try-wpt  (forced update)
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eb8fbddca95306b63012f8b848f2396c37ab8122
[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.