Copy-paste fix pattern
fn main() {
u256 i = 0
while (i < 1000) {
i += 1
}
save i
}Why it happens
A loop ran past the compiled runtime safety budget.
How to fix it
Add a real exit condition, lower the work per frame, or use an explicit performance profile for intentional heavy loops.
Runtime and Studio now show this kind of page from the error dialog: plain message first, stable code second, original details third.