message: test for doc coverage in build test
diff: @@ -728,10 +728,12 @@ mod tests {
  "SELECT
  r.rustdoc_status,
  r.default_target,
  - r.doc_targets
  + r.doc_targets,
  + cov.total_items
  FROM
  crates as c
  INNER JOIN releases AS r ON c.id = r.crate_id
  + LEFT OUTER JOIN doc_coverage AS cov ON r.id = cov.release_id
  WHERE
  c.name = $1 AND
  r.version = $2",
  @@ -742,6 +744,7 @@ mod tests {
  assert_eq!(row.get::<_, bool>("rustdoc_status"), true);
  assert_eq!(row.get::<_, String>("default_target"), default_target);
  + assert!(row.get::<_, Option<i32>>("total_items").is_some());
  let mut targets: Vec<String> = row
  .get::<_, Value>("doc_targets")
  