error: format argument must be a string literal
  --> $DIR/panic-2021.rs:4:12
   |
LL |     panic!(123);
   |            ^^^
   |
help: you might be missing a string literal to format with
   |
LL |     panic!("{}", 123);
   |            +++++

error: 1 positional argument in format string, but no arguments were given
  --> $DIR/panic-2021.rs:5:13
   |
LL |     panic!("{}");
   |             ^^

error: 1 positional argument in format string, but no arguments were given
  --> $DIR/panic-2021.rs:6:19
   |
LL |     core::panic!("{}");
   |                   ^^

error: format argument must be a string literal
  --> $DIR/panic-2021.rs:7:20
   |
LL |     assert!(false, 123);
   |                    ^^^
   |
help: you might be missing a string literal to format with
   |
LL |     assert!(false, "{}", 123);
   |                    +++++

error: 1 positional argument in format string, but no arguments were given
  --> $DIR/panic-2021.rs:8:21
   |
LL |     assert!(false, "{}");
   |                     ^^

error: aborting due to 5 previous errors