error: 1 positional argument in format string, but no arguments were given --> $DIR/issue-103826.rs:2:14 | LL | format!("{\x7D"); | ^^^^^ error: 1 positional argument in format string, but no arguments were given --> $DIR/issue-103826.rs:4:14 | LL | format!("\x7B\x7D"); | ^^^^^^^^ error: 2 positional arguments in format string, but no arguments were given --> $DIR/issue-103826.rs:6:14 | LL | format!("{\x7D {\x7D"); | ^^^^^ ^^^^^ error: aborting due to 3 previous errors