@lorihc It looks like the new structured logging (OSLog) doesn't work on device for watchOS apps (works fine in the Simulator).
I'm guessing this is a known issue, but I can't find anything in the release notes. FB13017925
@chockenberry Logging is turned off on customer builds of watchOS unless you have a logging profile installed (this is why we often ask developers to install sysdiagnose—or sometimes more specific—profiles when filing feedback for watchOS).
@chockenberry Not unnecessary if you think of it as a feature request.