[INFO] updating cached repository https://github.com/carllerche/experiment-vendor-tower [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] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 99909d295348fe9b1d2bbd4edb3c7928b6b703da [ERROR] this task or one of its parent failed! [ERROR] command `"/workspace/cargo-home/bin/cargo" "+beta-2020-03-12" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.