Is there a way to continue an outer loop from an inner loop in Rust?

Yes, Rust support continuing an outer loop when executing an inner loop through the use of loop labels:

let mut a = 0;
‘outer: loop {
a += 1;

let mut b = 0;
loop {
if b == 3 {
continue ‘outer;
}
b += 1;
}
}
Using loop labels with the break keyword instead of continue will enable an inner loop to exit both an inner and outer loop.