error: recursion limit reached while expanding `recurse!` --> $DIR/recursion_limit_macro.rs:10:31 | LL | ($t:tt $($tail:tt)*) => { recurse!($($tail)*) }; | ^^^^^^^^^^^^^^^^^^^ ... LL | recurse!(0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9); | ------------------------------------------------- in this macro invocation | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "20"]` attribute to your crate (`recursion_limit_macro`) = note: this error originates in the macro `recurse` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to 1 previous error