I find myself using the debugger to explore complex types created by procedural macros. You can use cargo to expand them andnpoke around, or dump the structure

I find myself using the debugger to explore complex types created by procedural macros. You can use cargo to expand them andnpoke around, or dump the structure to debug if it derives it, but sometimes the debugger seems easier. Also it can help find why something three crates deep into your dependency tree panicked.