The Rally app, like many others from @oneitonitram’s repository have only testing versions. The Core release 3.4.0 makes them visible but it does not explain well what is happening. The UI tooltip “Update to core 0.0.0…” is misleading!
I guess similar entries appeared after update to Core 3.4.0. If so, they are false alarms. Such entries were previously hidden, unless the the testing flag was enabled with specific commands in Redis, as documented in the Dev’s manual.
@mrmarkuz @oneitonitram I filed this bug to fix the misleading message, however for your repository metadata I’d suggest to publish only apps with at least one non-prerelease (stable) tag. If you really want that users install unstable applications, tag them as stable, and add a qualifier like Alpha, Beta, Testing, Unstable to the application “name” and “description” metadata attributes.