I'm seeing quite a few of failed rustdoc builds when building with docsrs, because some crates attempt to use the doc_auto_cfg feature, which was recently removed. If you maintain any crates affected by this, please switch from doc_auto_cfg to doc_cfg.
I'm filing PR's, but unfortunately this seems to affect a few crates that seem to be unmaintained or are dependencies of crates that are unmaintained.
I was bitten by this. Checking the docs.rs build log wasn't helpful unfortunately because the output is truncated.
Is there a way to download full build logs for failed builds?