min-recursion-limit

This flag sets a minimum recursion limit for the compiler. The final recursion limit is calculated as max(min_recursion_limit, recursion_limit_from_crate). This cannot ever lower the recursion limit. Unless the current crate has an explicitly low recursion_limit attribute, any value less than the current default does not have an effect.

The recursion limit affects (among other things):

• macro expansion
• the trait solver
• const evaluation
• query depth

This flag is particularly useful when using the next trait solver (-Z next-solver), which may require a higher recursion limit for crates that were compiled successfully with the old solver.