[INFO] updating cached repository https://github.com/linebender/piet-gpu
[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/linebender/piet-gpu
[INFO] [stderr]    ec8e2e5..04d732a  k4_chunk2          -> k4_chunk2
[INFO] [stderr]    4db4b3b..c1f4f66  master             -> master
[INFO] [stderr]  * [new branch]      simpler_k2_tg      -> simpler_k2_tg
[INFO] [stderr]  * [new branch]      simpler_k2_wg_junk -> simpler_k2_wg_junk
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c1f4f66a8fc6145750b0c9b4bb8730b5cfded7ce
[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.