[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-30
[INFO] [stderr]  - [deleted]               (none)     -> jdm-patch-35
[INFO] [stderr]  - [deleted]               (none)     -> jdm-patch-36
[INFO] [stderr]  - [deleted]               (none)     -> jdm-patch-56
[INFO] [stderr]  - [deleted]               (none)     -> jdm-patch-58
[INFO] [stderr]  - [deleted]               (none)     -> linux-processes
[INFO] [stderr]  - [deleted]               (none)     -> macos-benchmarks
[INFO] [stderr]  - [deleted]               (none)     -> tmp-try-daily
[INFO] [stderr]  - [deleted]               (none)     -> treeherder
[INFO] [stderr]  - [deleted]               (none)     -> try-communitytc
[INFO] [stderr]  - [deleted]               (none)     -> uwp-ci
[INFO] [stderr]  - [deleted]               (none)     -> webidl-lint
[INFO] [stderr]  * [new branch]            2020-background-images -> 2020-background-images
[INFO] [stderr]    cfa50b8222..267ce462d8  auto                   -> auto
[INFO] [stderr]    6535899d54..5b76c4239f  jdm-patch-28           -> jdm-patch-28
[INFO] [stderr]    cfa50b8222..267ce462d8  master                 -> master
[INFO] [stderr]  + dd1cdf51ea...b1d283638a try                    -> try  (forced update)
[INFO] [stderr]  + 2b3ae66061...360dd6dd24 try-linux              -> try-linux  (forced update)
[INFO] [stderr]  + b1add643ed...6180043baa try-taskcluster        -> try-taskcluster  (forced update)
[INFO] [stderr]  + 3895723d63...3c2deafd2b try-windows            -> try-windows  (forced update)
[INFO] [stderr]  * [new branch]            try-without-merge      -> try-without-merge
[INFO] [stderr]  + 2450c6e1c4...c3fd30ac4c try-wpt                -> try-wpt  (forced update)
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 267ce462d863498d5ccb134bb32c21fe3fc0e074
[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.