[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)     -> jdm-patch-31
[INFO] [stderr]  - [deleted]               (none)     -> jdm-patch-40
[INFO] [stderr]  - [deleted]               (none)     -> rustup
[INFO] [stderr]  - [deleted]               (none)     -> tc-readme
[INFO] [stderr]  - [deleted]               (none)     -> wrup
[INFO] [stderr]  + 04ff2528dd...cfa50b8222 auto             -> auto  (forced update)
[INFO] [stderr]  * [new branch]            checks           -> checks
[INFO] [stderr]    8846cda501..1c7f9d8e0c  jdm-patch-34     -> jdm-patch-34
[INFO] [stderr]  * [new branch]            linux-processes  -> linux-processes
[INFO] [stderr]  * [new branch]            macos-benchmarks -> macos-benchmarks
[INFO] [stderr]    2caa227e10..cfa50b8222  master           -> master
[INFO] [stderr]  * [new branch]            squeeze          -> squeeze
[INFO] [stderr]  * [new branch]            treeherder       -> treeherder
[INFO] [stderr]  + ae18466647...dd1cdf51ea try              -> try  (forced update)
[INFO] [stderr]  * [new branch]            try-checks       -> try-checks
[INFO] [stderr]  + 592f481024...2b3ae66061 try-linux        -> try-linux  (forced update)
[INFO] [stderr]  + 6c3ee5936a...09f8c9897b try-mac          -> try-mac  (forced update)
[INFO] [stderr]  * [new branch]            try-mac8         -> try-mac8
[INFO] [stderr]  * [new branch]            try-mac9         -> try-mac9
[INFO] [stderr]  + 174f79c5fb...b1add643ed try-taskcluster  -> try-taskcluster  (forced update)
[INFO] [stderr]  + f573bda4ac...3895723d63 try-windows      -> try-windows  (forced update)
[INFO] [stderr]  + 3cf9dd628f...2450c6e1c4 try-wpt          -> try-wpt  (forced update)
[INFO] [stderr]  * [new branch]            try-wpt-2020     -> try-wpt-2020
[INFO] [stderr]  + 08e661561c...0661df3b69 try-wpt-mac      -> try-wpt-mac  (forced update)
[INFO] [stderr]  * [new branch]            …              -> …
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cfa50b82224040c798d7cdc88ea6e098ecf913c6
[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.