Unable to update registry on CircleCI

[RoxasShadow]

Basically both the setup of the environment and the rust installation work fine, but:

cargo build -v

�$<2>$<2>    Updating�$<2> registry `https://github.com/rust-lang/crates.io-index`
�$<2>Unable to update registry https://github.com/rust-lang/crates.io-index
�$<2>�$<2>
Caused by:
�$<2>�$<2>  failed to fetch `https://github.com/rust-lang/crates.io-index`
�$<2>�$<2>
Caused by:
�$<2>�$<2>  failed to authenticate when downloading repository
�$<2>�$<2>
Caused by:
�$<2>�$<2>  [23/-1] error authenticating: no auth sock variable

�$<2>cargo build -v returned exit code 101

[alexcrichton]

I think that this is a dupe of #2078 because Circle CI will use insteadOf git configuration to switch to an SSH clone instead of an HTTPS clone. The default keys pointed to by ~/.ssh/config are unfortunately not ready by Cargo just yet :(

[RoxasShadow]

Yes, it is. Thanks!

Anyay, if someone needs a (hopefully) temporary workaround, they can try adding this to the circle.yml:

test:
  override:
    - eval `ssh-agent` && ssh-add /home/ubuntu/.ssh/id_circleci_github && cargo test

(Source)