[INFO] Scanning for projects...
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ my-app ---
[INFO] Compiling 15 source files to /target/classes
[ERROR] /src/main/java/App.java:42: error: cannot find symbol
[ERROR] /src/main/java/App.java:43: error: cannot find symbol
[ERROR] /src/main/java/App.java:44: error: cannot find symbol
[WARNING] /src/main/java/App.java:10: unchecked cast
[WARNING] /src/main/java/App.java:11: unchecked cast
[WARNING] /src/main/java/App.java:12: unchecked cast
[WARNING] /src/main/java/App.java:13: unchecked cast
[WARNING] /src/main/java/App.java:14: unchecked cast
[INFO] 
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
