enable debug log

build.sbt

@@ -29,9 +29,12 @@ lazy val testSettings: Seq[Setting[_]] = Seq(
   scriptedBufferLog := false
 )
 
-lazy val core = project
-  .in(file("core"))
-  .settings(testSettings)
+lazy val core = {
+  SetLoggerLevel.setHttpURLConnectionLoggerLevelToFine()
+  project
+    .in(file("core"))
+    .settings(testSettings)
+}
 
 lazy val `sbt-codeartifact` = project
   .in(file("sbt-codeartifact"))

project/SetLoggerLevel.scala

@@ -0,0 +1,9 @@
+import sun.util.logging.PlatformLogger
+
+object SetLoggerLevel {
+  def setHttpURLConnectionLoggerLevelToFine(): Unit = {
+    PlatformLogger
+      .getLogger("sun.net.www.protocol.http.HttpURLConnection")
+      .setLevel(PlatformLogger.Level.FINE)
+  }
+}