message: Increase truncated snippet length
  Summary: I must admit, 50 is too short.
diff: @@ -94,7 +94,7 @@ impl Frame {
  .file
  .source_line_at_pos(location.span.begin())
  .trim();
  - let (line, ddd) = truncate_snippet(line, 50);
  + let (line, ddd) = truncate_snippet(line, 80);
  writeln!(
  write,
  "{}* {}:{}, in {}",
  