[INFO] updating cached repository https://github.com/mimblewimble/grin
[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
[INFO] [stderr]  * [new branch]        current/3.1.x -> current/3.1.x
[INFO] [stderr]    8a15007c..6bdf31f2  master        -> master
[INFO] [stderr]  * [new tag]           v3.1.0        -> v3.1.0
[INFO] [stderr]  * [new tag]           v3.1.0-beta.2 -> v3.1.0-beta.2
[INFO] [stderr]  * [new tag]           v3.1.0-beta.3 -> v3.1.0-beta.3
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6bdf31f23d98888d16bb81d16c34b5386bd72b01
[ERROR] this task or one of its parent failed!
[ERROR] command `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.