[INFO] updating cached repository https://github.com/mimblewimble/grin-wallet
[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/mimblewimble/grin-wallet
[INFO] [stderr]  - [deleted]         (none)     -> 4.0.0/compact_slates
[INFO] [stderr]    dceeda9..9450d2a  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9450d2a3b8710fef26b2a3a20807b76bdbc3e2a3
[ERROR] this task or one of its parent failed!
[ERROR] command `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.