[INFO] updating cached repository https://github.com/linkerd/linkerd2-proxy
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/linkerd/linkerd2-proxy
[INFO] [stderr]    dff01e7..e73d464  master                -> master
[INFO] [stderr]    ec76417..3aec66d  ver/listen-split-tls  -> ver/listen-split-tls
[INFO] [stderr]  * [new branch]      ver/split-proxies     -> ver/split-proxies
[INFO] [stderr]  + 5942b2e...d3ed131 ver/split-transport   -> ver/split-transport  (forced update)
[INFO] [stderr]  * [new branch]      ver/split-transport-accept-tests -> ver/split-transport-accept-tests
[INFO] [stderr]  * [new tag]         linkerd2/edge-19.10.2 -> linkerd2/edge-19.10.2
[INFO] [stderr]  * [new tag]         linkerd2/stable-2.6.0 -> linkerd2/stable-2.6.0
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e73d464aa66a14598137c6554828bed13cfa3b88
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.