[INFO] updating cached repository https://github.com/viperproject/prusti-dev
[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/viperproject/prusti-dev
[INFO] [stderr]  - [deleted]           (none)     -> more-errors
[INFO] [stderr]    91107cee..07687658  master        -> master
[INFO] [stderr]  + 71f5ddd8...e3c2d3f5 rustc-update  -> rustc-update  (forced update)
[INFO] [stderr]  * [new branch]        rustc-update-global-proc-macro -> rustc-update-global-proc-macro
[INFO] [stderr]  * [new branch]        support-loops -> support-loops
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 07687658d5a36b0c829549217b450ad47e43a2c5
[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.