error: Only the last positional argument may be `Option`, `Vec`, or defaulted. --> tests/ui/conflicting-tails/positional-and-greedy.rs:4:5 | 4 | #[argp(positional)] | ^ error: Later positional argument declared here. --> tests/ui/conflicting-tails/positional-and-greedy.rs:8:5 | 8 | #[argp(positional, greedy)] | ^