Tickets for chisel. Try to include as much detail as you can in bug reports, including panic traces, operating system and/or kernel version, libc, and so on. Omitting information when it's definitely not relevant is fine, but err on the side of caution when choosing to leave out a detail.
For feature requests, please include examples of how the feature might be configured and used when possible. This helps inform anyone attempting an implementation where things might fit, especially when everyone has limited time per week to plan things out.