message: Add --cap-lints warn
  Closes
  I tested locally that this fixes the `ring` build.
diff: @@ -442,6 +442,8 @@ impl RustwideBuilder {
  format!("-{}", parse_rustc_version(&self.rustc_version)?),
  "--static-root-path".to_string(),
  "/".to_string(),
  + "--cap-lints".to_string(),
  + "warn".to_string(),
  ];
  for dep in &cargo_metadata.root_dependencies() {
  rustdoc_flags.push("--extern-html-root-url".to_string());
  