p4a failure with debug info

gistfile1.txt

[DEBUG]:   	-compile:
[DEBUG]:   	    [javac] Compiling 23 source files to /home/amy/.local/share/python-for-android/dists/unnamed_dist_1/bin/classes
[DEBUG]:   	    [javac] Note: Some input files use or override a deprecated API.
[DEBUG]:   	    [javac] Note: Recompile with -Xlint:deprecation for details.
[DEBUG]:   	
[DEBUG]:   	-post-compile:
[DEBUG]:   	
[DEBUG]:   	-obfuscate:
[DEBUG]:   	
[DEBUG]:   	-dex:
[DEBUG]:   	      [dex] input: /home/amy/.local/share/python-for-android/dists/unnamed_dist_1/bin/classes
[DEBUG]:   	      [dex] Converting compiled files and external libraries into /home/amy/.local/share/python-for-android/dists/unnamed_dist_1/bin/classes.dex...
[DEBUG]:   	       [dx] Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0
[DEBUG]:   	       [dx] 	at java.lang.ClassLoader.defineClass1(Native Method)
[DEBUG]:   	       [dx] 	at java.lang.ClassLoader.defineClass(ClassLoader.java:803)
[DEBUG]:   	       [dx] 	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[DEBUG]:   	       [dx] 	at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
[DEBUG]:   	       [dx] 	at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
[DEBUG]:   	       [dx] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[DEBUG]:   	       [dx] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
[DEBUG]:   	       [dx] 	at java.security.AccessController.doPrivileged(Native Method)
[DEBUG]:   	       [dx] 	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
[DEBUG]:   	       [dx] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
[DEBUG]:   	       [dx] 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
[DEBUG]:   	       [dx] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
[DEBUG]:   	       [dx] 	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
[DEBUG]:   	
[DEBUG]:   	BUILD FAILED
[DEBUG]:   	/home/amy/android/android-sdk-linux/tools/ant/build.xml:888: The following error occurred while executing this line:
[DEBUG]:   	/home/amy/android/android-sdk-linux/tools/ant/build.xml:890: The following error occurred while executing this line:
[DEBUG]:   	/home/amy/android/android-sdk-linux/tools/ant/build.xml:902: The following error occurred while executing this line:
[DEBUG]:   	/home/amy/android/android-sdk-linux/tools/ant/build.xml:283: null returned: 1
[DEBUG]:   	
[DEBUG]:   	Total time: 4 seconds
[INFO]:    STDOUT (last 20 lines of 95):
	       [dx] 	at java.lang.ClassLoader.defineClass(ClassLoader.java:803)	
       [dx] 	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)	
       [dx] 	at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
       [dx] 	at java.net.URLClassLoader.access$100(URLClassLoader.java:71)	
       [dx] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)	
       [dx] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)	
       [dx] 	at java.security.AccessController.doPrivileged(Native Method)	
       [dx] 	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)	
       [dx] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)	
       [dx] 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
       [dx] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)	
       [dx] 	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)	
	
BUILD FAILED	
/home/amy/android/android-sdk-linux/tools/ant/build.xml:888: The following error occurred while executing this line:	
/home/amy/android/android-sdk-linux/tools/ant/build.xml:890: The following error occurred while executing this line:	
/home/amy/android/android-sdk-linux/tools/ant/build.xml:902: The following error occurred while executing this line:	
/home/amy/android/android-sdk-linux/tools/ant/build.xml:283: null returned: 1	
	
Total time: 4 seconds
[INFO]:    STDERR:
	
[INFO]:    COMMAND:
cd /home/amy/.local/share/python-for-android/dists/unnamed_dist_1 && /usr/bin/ant debug

[WARNING]: ERROR: /usr/bin/ant failed!