Annotate any errors that are propagated up

Errors throughout `ci` should be annotated as they are returned from functions or otherwise handled. See [this Reddit post](https://www.reddit.com/r/golang/comments/s4sks3/how_can_i_alleviate_gos_highly_repetitive_error/hst3256?utm_medium=android_app&utm_source=share&context=3) for a suggestion on how to remedy this problem. 