Rollup merge of #145780 - Kobzol:change-id-warn, r=lqd

Do not warn about missing change ID in tarball builds

Fixes: #145778

r? `@jieyouxu`

Author: samueltardieu

src/bootstrap/src/bin/main.rs

@@ -198,14 +198,16 @@ fn check_version(config: &Config) -> Option<String> {
         Some(ChangeId::Id(id)) if id == latest_change_id => return None,
         Some(ChangeId::Ignore) => return None,
         Some(ChangeId::Id(id)) => id,
-        None => {
+        // The warning is only useful for development, not release tarballs
+        None if !config.rust_info.is_from_tarball() => {
             msg.push_str("WARNING: The `change-id` is missing in the `bootstrap.toml`. This means that you will not be able to track the major changes made to the bootstrap configurations.\n");
             msg.push_str("NOTE: to silence this warning, ");
             msg.push_str(&format!(
                 "add `change-id = {latest_change_id}` or `change-id = \"ignore\"` at the top of `bootstrap.toml`"
             ));
             return Some(msg);
         }
+        None => return None,
     };
 
     // Always try to use `change-id` from .last-warned-change-id first. If it doesn't exist,