[INFO] updating cached repository https://github.com/habitat-sh/builder
[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/habitat-sh/builder
[INFO] [stderr]  - [deleted]           (none)     -> sm/unpin-actix
[INFO] [stderr]  * [new branch]        eeyun/rbac_p2   -> eeyun/rbac_p2
[INFO] [stderr]  * [new branch]        expeditor/cargo-update-20200528144625 -> expeditor/cargo-update-20200528144625
[INFO] [stderr]  + e837a6b6...4d466a60 ma/graph_build  -> ma/graph_build  (forced update)
[INFO] [stderr]  * [new branch]        ma/z3_scheduler -> ma/z3_scheduler
[INFO] [stderr]    fa2c8d47..65028dda  master          -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 65028ddabc0722c379733184bdb0e2bec8ff8b6c
[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.