If you see a failed build you often have to look a few lines before "BUILD FAILED" to see the error. In your case it is something with the chartboost extension. I assume the chartboost extension you are using is a version for 3.3 or newer builds and doesn't work with 3.2:
2015-05-03 20:29:05,376 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] Compiling 19 source files to C:\Users\jesse\AppData\Roaming\Stencyl\stencylworks\games-generated\HyperSonic\Export\android\bin\bin\classes
2015-05-03 20:29:06,991 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] C:\Users\jesse\AppData\Roaming\Stencyl\stencylworks\games-generated\HyperSonic\Export\android\bin\src\MyChartboost.java:11: package org.haxe.lime does not exist
2015-05-03 20:29:06,991 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] import org.haxe.lime.*;
2015-05-03 20:29:06,993 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] ^
2015-05-03 20:29:07,091 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] C:\Users\jesse\AppData\Roaming\Stencyl\stencylworks\games-generated\HyperSonic\Export\android\bin\src\MyChartboost.java:39: cannot find symbol
2015-05-03 20:29:07,091 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] symbol : class HaxeObject
2015-05-03 20:29:07,093 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] location: class com.rob1221.MyChartboost
2015-05-03 20:29:07,094 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] public static HaxeObject callback;
2015-05-03 20:29:07,094 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] ^
2015-05-03 20:29:07,094 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] C:\Users\jesse\AppData\Roaming\Stencyl\stencylworks\games-generated\HyperSonic\Export\android\bin\src\MyChartboost.java:45: cannot find symbol
2015-05-03 20:29:07,095 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] symbol : class HaxeObject
2015-05-03 20:29:07,095 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] location: class com.rob1221.MyChartboost
2015-05-03 20:29:07,096 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] public static void startChartboost(final String appID, final String appSignature, final HaxeObject obj)
2015-05-03 20:29:07,096 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] ^
2015-05-03 20:29:07,693 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] Note: Some input files use or override a deprecated API.
2015-05-03 20:29:07,693 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] Note: Recompile with -Xlint:deprecation for details.
2015-05-03 20:29:07,695 INFO [Thread-34] stencyl.sw.util.StreamGobbler: [nme.bat] [javac] 3 errors
2015-05-03 20:29:07,747 ERROR [Thread-33] stencyl.sw.util.StreamGobbler: [nme.bat] BUILD FAILED
2015-05-03 20:29:07,747 ERROR [Thread-33] stencyl.sw.util.StreamGobbler: [nme.bat] C:\Users\jesse\AppData\Roaming\Stencyl\stencylworks\android-sdk\android-sdk-windows\tools\ant\build.xml:713: The following error occurred while executing this line:
2015-05-03 20:29:07,748 ERROR [Thread-33] stencyl.sw.util.StreamGobbler: [nme.bat] C:\Users\jesse\AppData\Roaming\Stencyl\stencylworks\android-sdk\android-sdk-windows\tools\ant\build.xml:727: Compile failed; see the compiler error output for details.