5 //~^ ERROR invalid format string: expected `'}'` but string was terminated
8 //~^ ERROR invalid format string: unmatched `}` found
9 let _ = format!("{_foo}", _foo = 6usize);
10 //~^ ERROR invalid format string: invalid argument name `_foo`
11 let _ = format!("{_}", _ = 6usize);
12 //~^ ERROR invalid format string: invalid argument name `_`
14 //~^ ERROR invalid format string: expected `'}'` but string was terminated
16 //~^ ERROR invalid format string: unmatched `}` found
17 let _ = format!("{\\}");
18 //~^ ERROR invalid format string: expected `'}'`, found `'\\'`
19 let _ = format!("\n\n\n{\n\n\n");
20 //~^ ERROR invalid format string
26 //~^ ERROR invalid format string
34 //~^ ERROR invalid format string
42 //~^^^ ERROR invalid format string
50 //~^^^ ERROR invalid format string: unmatched `}` found