fix: matches_prerelease should be only used on OptVersionReq::Req

Author: linyihai

src/cargo/util/semver_ext.rs

@@ -116,7 +116,7 @@ impl OptVersionReq {
     /// The logic here is temporary, we'll have to consider more boundary conditions later,
     /// and we're not sure if this part of the functionality should be implemented in semver or cargo.
     pub fn matches_prerelease(&self, version: &Version) -> bool {
-        if version.is_prerelease() {
+        if version.is_prerelease() && matches!(self, OptVersionReq::Req(_)) {
             let mut version = version.clone();
             version.pre = semver::Prerelease::EMPTY;
             return self.matches(&version);
@@ -251,9 +251,9 @@ mod matches_prerelease {
         assert!(req.matches_prerelease(&to_ver));
 
         let req = OptVersionReq::Locked(to_ver.clone(), req_ver.clone());
-        assert!(!req.matches_prerelease(&to_ver));
+        assert!(req.matches_prerelease(&to_ver));
 
         let req = OptVersionReq::Precise(to_ver.clone(), req_ver.clone());
-        assert!(!req.matches_prerelease(&to_ver));
+        assert!(req.matches_prerelease(&to_ver));
     }
 }