Continue if no matches

src/process.ts

@@ -51,21 +51,15 @@ export async function processGoGraph (
      * package */
     const matches = cache.packagesMatching(matcher)
 
-    console.log(
+    if (matches.length === 0) return
-      'matcher:',
+
-      matcher,
-      'parentPkg:',
-      parentPkg,
-      'childPkg:',
-      childPkg
-    )
     if (matches.length !== 1) {
       throw new Error(
-        'assertion failed: expected one package in cache with namespace+name. ' +
+        'assertion failed: expected no more than one package in cache with namespace+name. ' +
           'Found: ' +
           JSON.stringify(matches) +
-          '\n' +
+          'for ' +
-          `matcher: ${matcher} parentPkg: ${parentPkg} childPkg: ${childPkg}`
+          JSON.stringify(matcher)
       )
     }
     // create the dependency relationship