[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)     -> current/2.1.x
[INFO] [stderr]  - [deleted]         (none)     -> current/3.0.x
[INFO] [stderr]  * [new branch]      current/3.1.x -> current/3.1.x
[INFO] [stderr]    2f67695..c42d5dd  master        -> master
[INFO] [stderr]  * [new tag]         v3.1.1        -> v3.1.1
[INFO] [stderr]  * [new tag]         v3.1.0        -> v3.1.0
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c42d5ddcff140fda10f5727bb9ddde796059f32a
[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.