1 // Regression test for #36053. ICE was caused due to obligations
2 // being added to a special, dedicated fulfillment cx during
3 // a probe.
4 
5 use std::iter::once;
main()6 fn main() {
7     once::<&str>("str").fuse().filter(|a: &str| true).count();
8     //~^ ERROR the method
9     //~| ERROR type mismatch in closure arguments
10 }
11