Comment by throwaway78123

parquet-rs: to read or write parquet files, cf the Arrow project: https://news.ycombinator.com/item?id=23966150 where one person asking about triggered a ticket in Arrow's JIRA. I am not holding my breath (a 2.5 years old issue on Github about the exact same thing appears to be dead: https://github.com/sunchao/parquet-rs/issues/119)

The web framework situation has also been a problem for quite some time. No clear stable equivalent to jetty, flask, go's net/http. Great that Diesel (which looks great) is making it to stable. I really wished it was stable 3 years ago.

On that note it would be great if crates.io would have stable/nightly compatibility as a primary concept/badge/filter. I can't think of any other mechanism to nudge library developers into supporting stable as a first class citizen.