message: Work around an immutable arg array
diff: @@ -844,7 +844,7 @@ function evalProg(prog: bril.Program) {
  }
  // Silly argument parsing to find the `-p` flag.
  - let args: string[] = Deno.args;
  + let args: string[] = Array.from(Deno.args);
  let profiling = false;
  let pidx = args.indexOf('-p');
  if (pidx > -1) {
  