[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]  - [deleted]               (none)     -> rustup
[INFO] [stderr]  + 08093c05d7...d42835b238 auto            -> auto  (forced update)
[INFO] [stderr]  * [new branch]            css2-wpt        -> css2-wpt
[INFO] [stderr]  * [new branch]            jdm-patch-36    -> jdm-patch-36
[INFO] [stderr]  * [new branch]            jdm-patch-40    -> jdm-patch-40
[INFO] [stderr]    455fb18eca..d42835b238  master          -> master
[INFO] [stderr]  + ba036fecb9...379bdd36d7 smup            -> smup  (forced update)
[INFO] [stderr]  * [new branch]            synup           -> synup
[INFO] [stderr]  + 427a09bb21...c50cf367f2 try             -> try  (forced update)
[INFO] [stderr]  + d090bddd44...8bf51574ec try-linux       -> try-linux  (forced update)
[INFO] [stderr]  + e1101dfd81...43977cd02f try-taskcluster -> try-taskcluster  (forced update)
[INFO] [stderr]  + 8050dfa606...80091159cc try-windows     -> try-windows  (forced update)
[INFO] [stderr]  + 007955d94c...deea463a76 try-wpt         -> try-wpt  (forced update)
[INFO] [stderr]  + becfb3a7ce...03d8c216a1 try-wpt-2020    -> try-wpt-2020  (forced update)
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d42835b238cc8a086f08e9901e19b81bc5d75be3
[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.