[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)     -> dp/chore/ensure-we-ignore-old-snapshots
[INFO] [stderr]  - [deleted]             (none)     -> dp/chore/put-snapshot-progress-behind-rwlock
[INFO] [stderr]  - [deleted]             (none)     -> na-builtin-refactor
[INFO] [stderr]  - [deleted]             (none)     -> na-light-receipt
[INFO] [stderr]  - [deleted]             (none)     -> na-rpc-style-fix
[INFO] [stderr]    b67ae67cd..bcdd4702f  HandleImportOfForks   -> HandleImportOfForks
[INFO] [stderr]    e4fde5990..cd8e8c4a2  PreventBlocksReimport -> PreventBlocksReimport
[INFO] [stderr]    ab182327f..8d6c7afc0  demi-fix-c-api        -> demi-fix-c-api
[INFO] [stderr]    2c97bcc1a..13729a0f7  master                -> master
[INFO] [stderr]    758532474..5da3db182  s1-config-mordor      -> s1-config-mordor
[INFO] [stderr]  * [new branch]          seun-backport-10984   -> seun-backport-10984
[INFO] [stderr]    078de7efc..1224d2544  seun-fix-instant-seal -> seun-fix-instant-seal
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13729a0f7fbfa5b31de17f68f7a05db1d7da4353
[ERROR] this task or one of its parent failed!
[ERROR] command `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.