src/test/ui/macros/format-foreign.stderr

error: multiple unused formatting arguments
  --> $DIR/format-foreign.rs:12:5
   |
12 |     println!("%.*3$s %s!/n", "Hello,", "World", 4);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^--------^^-------^^-^^
   |                              |         |        |
   |                              |         |        unused
   |                              |         unused
   |                              unused
   |
   = help: `%.*3$s` should be written as `{:.2$}`
   = help: `%s` should be written as `{}`
   = note: printf formatting not supported; see the documentation for `std::fmt`
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: argument never used
  --> $DIR/format-foreign.rs:13:29
   |
13 |     println!("%1$*2$.*3$f", 123.456); //~ ERROR never used
   |                             ^^^^^^^
   |
   = help: `%1$*2$.*3$f` should be written as `{0:1$.2$}`
   = note: printf formatting not supported; see the documentation for `std::fmt`

error: argument never used
  --> $DIR/format-foreign.rs:17:30
   |
17 |     println!("{} %f", "one", 2.0); //~ ERROR never used
   |                              ^^^

error: named argument never used
  --> $DIR/format-foreign.rs:19:39
   |
19 |     println!("Hi there, $NAME.", NAME="Tim"); //~ ERROR never used
   |                                       ^^^^^
   |
   = help: `$NAME` should be written as `{NAME}`
   = note: shell formatting not supported; see the documentation for `std::fmt`

error: aborting due to 4 previous errors