message: check option cannot be used with --lsp or --dap
diff: @@ -66,7 +66,11 @@ struct Args {
  #[structopt(long = "dap", help = "Start a DAP server.")]
  dap: bool,
  - #[structopt(long = "check", help = "Run checks and lints.")]
  + #[structopt(
  + long = "check",
  + help = "Run checks and lints.",
  + conflicts_with_all = &["lsp", "dap"],
  + )]
  check: bool,
  #[structopt(long = "json", help = "Show output as JSON lines.")]
  