For example https://crates.io/crates/saphyr-parser/0.3.2/code was recently published (without any client-side errors) but crates.io says:
The source code for this version is not available yet.
Archives are built shortly after a version is published.
This usually only takes a few seconds, so please try again in a couple of minutes.
Does anyone know what's going on?
This is the background worker for the new source viewer falling behind. It has to process the newly published .crate file into a seekable zip archive. Nothing is broken, it usually just lags an hour or so under load.
We ran into a related issue too: uploads succeeded, but Cargo couldn't find the new versions in the index.
Related report: https://github.com/rust-lang/crates.io/issues/15053
It now looks like it has been fixed. They're visible now.