[INFO] updating cached repository https://github.com/rust-lang-nursery/chalk
[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/rust-lang-nursery/chalk
[INFO] [stderr]  + b9a76d162...b3f2f0a3b gh-pages   -> gh-pages  (forced update)
[INFO] [stderr]    f5d1427fe..ff137d4ba  master     -> master
[INFO] [stderr]  * [new tag]             v0.10.0    -> v0.10.0
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ff137d4babef4eb4f49654ee3bfb4f0c88c1b5ff
[ERROR] this task or one of its parent failed!
[ERROR] command `"/workspace/cargo-home/bin/cargo" "+1cdff26b98d4c2377ea6ae8929f1daebbf58f2b0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.