[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)     -> seun-signing-queue
[INFO] [stderr]  * [new branch]          ao-check-mainnet-spec-against-istanbul-test -> ao-check-mainnet-spec-against-istanbul-test
[INFO] [stderr]    4a4edf938..5162bc2c8  beta                        -> beta
[INFO] [stderr]  * [new branch]          incremental_0               -> incremental_0
[INFO] [stderr]  * [new branch]          jm-istanbul-autoupdate-versions -> jm-istanbul-autoupdate-versions
[INFO] [stderr]  * [new branch]          joshua-mir-patch-beta       -> joshua-mir-patch-beta
[INFO] [stderr]  * [new branch]          joshua-mir-patch-stable     -> joshua-mir-patch-stable
[INFO] [stderr]    f6c3d4c69..cfe57633f  master                      -> master
[INFO] [stderr]  + 41db3e8ab...377cc110d seun-ipc-socket-permissions -> seun-ipc-socket-permissions  (forced update)
[INFO] [stderr]    a071d81fe..fc129b4a2  stable                      -> stable
[INFO] [stderr]  * [new tag]             v2.5.11                     -> v2.5.11
[INFO] [stderr]  * [new tag]             v2.6.6                      -> v2.6.6
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cfe57633fac8a50d7802f64e86946ccd3adb468b
[ERROR] this task or one of its parent failed!
[ERROR] command `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.