[INFO] updating cached repository https://github.com/viperproject/prusti-dev
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] From https://github.com/viperproject/prusti-dev
[INFO] [stderr]  - [deleted]           (none)     -> more-tests
[INFO] [stderr]  - [deleted]           (none)     -> support-loops
[INFO] [stderr]  * [new branch]        copy-position        -> copy-position
[INFO] [stderr]    226da80f..5295a585  datatype_equality    -> datatype_equality
[INFO] [stderr]    3807328a..5fee2478  master               -> master
[INFO] [stderr]    296891d2..bd90fe07  rustc-update         -> rustc-update
[INFO] [stderr]  + ba4d22f3...a85927e5 tests-from-rust-horn -> tests-from-rust-horn  (forced update)
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5fee2478f7c0865918c37dcbf75ec0c2948916e9
[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.