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// cmpile-flags: -Z borrowck=mir -Z two-phase-borrows
// This is the first counter-example from Niko's blog post
// smallcultfollowing.com/babysteps/blog/2017/03/01/nested-method-calls-via-two-phase-borrowing/
// of a danger for code to crash if we just turned off the check for whether
// a mutable-borrow aliases another borrow.
fn main() {
let mut v: Vec<String> = vec![format!("Hello, ")];
v[0].push_str({
v.push(format!("foo"));
//~^ ERROR cannot borrow `v` as mutable more than once at a time [E0499]
"World!"
});
}
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