message: Remove hard-coded index.html in fingerprint function.
diff: @@ -1068,19 +1068,12 @@ fn calculate_normal<'a, 'cfg>(
  // Figure out what the outputs of our unit is, and we'll be storing them
  // into the fingerprint as well.
  - let outputs = if unit.mode.is_doc() {
  - vec![cx
  - .files()
  - .out_dir(unit)
  - .join(unit.target.crate_name())
  - .join("index.html")]
  - } else {
  - cx.outputs(unit)?
  + let outputs = cx
  + .outputs(unit)?
  .iter()
  .filter(|output| output.flavor != FileFlavor::DebugInfo)
  .map(|output| output.path.clone())
  - .collect()
  - };
  + .collect();
  // Fill out a bunch more information that we'll be tracking typically
  // hashed to take up less space on disk as we just need to know when things
  