fix: Skip update --breaking in prerelase version

Author: linyihai

src/cargo/util/toml_mut/upgrade.rs

@@ -18,9 +18,18 @@ pub(crate) fn upgrade_requirement(
         let comparators: CargoResult<Vec<_>> = raw_req
             .comparators
             .into_iter()
-            .map(|p| set_comparator(p, version))
+            .filter_map(|p| {
+                if p.pre.is_empty() {
+                    Some(set_comparator(p, version))
+                } else {
+                    None
+                }
+            })
             .collect();
-        let comparators = comparators?;
+        let comparators: Vec<_> = comparators?;
+        if comparators.is_empty() {
+            return Ok(None);
+        }
         let new_req = semver::VersionReq { comparators };
         let mut new_req_text = new_req.to_string();
         if new_req_text.starts_with('^') && !req.starts_with('^') {
@@ -219,8 +228,12 @@ mod test {
         }
 
         #[test]
-        fn caret_prerelease() {
-            assert_req_bump("1.7.0", "2.0.0-beta.21", "1.7.0");
+        fn ignore_prerelease() {
+            assert_req_bump("1.7.0", "2.0.0-beta.21", None);
+            assert_req_bump("1.7.0", ">=2.0.0-beta.21", None);
+            assert_req_bump("1.7.0", ">2.0.0-beta.21", None);
+            assert_req_bump("1.7.0", "<=2.0.0-beta.21", None);
+            assert_req_bump("1.7.0", "<2.0.0-beta.21", None);
         }
     }
 }

tests/testsuite/update.rs

@@ -2646,9 +2646,6 @@ fn update_breaking_pre_release() {
         .masquerade_as_nightly_cargo(&["update-breaking"])
         .with_stderr_data(str![[r#"
 [UPDATING] `dummy-registry` index
-[UPGRADING] bar ^2.0.0-beta.21 -> ^1.7.0
-[LOCKING] 1 package to latest compatible version
-[DOWNGRADING] bar v2.0.0-beta.21 -> v1.7.0
 
 "#]])
         .run();