混淆bug:* What went wrong: Execution failed for task ':app:transformClassesAndResourcesWithProguardFor

最近在打包的时候遇到这个奇葩问题，也是对前面文章的补充，一直打release包不成功，报

* What went wrong:

Execution failed for task ':app:transformClassesAndResourcesWithProguardForRelease'.

> Job failed, see logs for details

看了几遍proguard-rules.pro，该有的混淆都加了，还是一直打包不成功，最后加上这句

-dontwarn org.apache.commons.logging.**
-ignorewarnings
-keep class * {
public private *;
}

成功了，主要还是-ignorewarnings这个，忽略警告