[INFO] updating cached repository https://github.com/paritytech/parity-ethereum
[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/paritytech/parity-ethereum
[INFO] [stderr]  - [deleted]             (none)     -> ao-check-mainnet-spec-against-istanbul-test
[INFO] [stderr]  - [deleted]             (none)     -> seun-ipc-socket-permissions
[INFO] [stderr]  * [new branch]          dp/chore/kvdb-no-default-column -> dp/chore/kvdb-no-default-column
[INFO] [stderr]    cfe57633f..64295fde6  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 64295fde6204ac17f6c6a0aadd8689486a725639
[ERROR] this task or one of its parent failed!
[ERROR] command `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.