LL | iso(left, right)
| ^^^
|
- = help: consider adding a `#![recursion_limit="256"]` attribute to your crate (`mutual_recursion_issue_75860`)
+ = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`mutual_recursion_issue_75860`)
note: required by a bound in `Option`
--> $SRC_DIR/core/src/option.rs:LL:COL
|