$ java -Xmx1024M -jar BuildTools.jar -Xmx1024M -Xms1024M
Loading BuildTools version: git-BuildTools-0e60cdb-105 (#105)
Java Version: Java 8
Exception in thread "main" joptsimple.UnrecognizedOptionException: X is not a recognized option
        at joptsimple.OptionException.unrecognizedOption(OptionException.java:108)
        at joptsimple.OptionParser.validateOptionCharacters(OptionParser.java:633)
        at joptsimple.OptionParser.handleShortOptionCluster(OptionParser.java:528)
        at joptsimple.OptionParser.handleShortOptionToken(OptionParser.java:523)
        at joptsimple.OptionParserState$2.handleArgument(OptionParserState.java:59)
        at joptsimple.OptionParser.parse(OptionParser.java:396)
        at org.spigotmc.builder.Builder.main(Builder.java:144)
        at org.spigotmc.builder.Bootstrap.main(Bootstrap.java:40)