Current issue: https://cd.nasqueron.org/job/docker-registry-api-doc/33/
+ cargo build
Updating crates.io index
error: failed to select a version for the requirement `ring = "^0.11.0"`
candidate versions found which didn't match: 0.16.20, 0.16.19, 0.16.18, ...
location searched: crates.io index
required by package `cookie v0.9.1`
... which is depended on by `rocket v0.3.16`
... which is depended on by `docker-registry-api v0.1.0 (/home/app/workspace/docker-registry-api-doc)`