Gumtree (2656040) failed to parse the following:
DeleteMessage.java.
It seems a malformed code in the above source caused the failure.

Error while running client 'parse'.
java.nio.charset.MalformedInputException: Input length = 1
at java.base/java.nio.charset.CoderResult.throwException(CoderResult.java:274)
at java.base/sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:339)
at java.base/sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.base/java.io.InputStreamReader.read(InputStreamReader.java:181)
at java.base/java.io.BufferedReader.read1(BufferedReader.java:210)
at java.base/java.io.BufferedReader.read(BufferedReader.java:287)
at java.base/java.io.BufferedReader.fill(BufferedReader.java:161)
at java.base/java.io.BufferedReader.read1(BufferedReader.java:212)
at java.base/java.io.BufferedReader.read(BufferedReader.java:287)
at java.base/java.io.Reader.read(Reader.java:229)
at com.github.gumtreediff.gen.jdt.AbstractJdtTreeGenerator.readerToCharArray(AbstractJdtTreeGenerator.java:44)
at com.github.gumtreediff.gen.jdt.AbstractJdtTreeGenerator.generate(AbstractJdtTreeGenerator.java:64)
at com.github.gumtreediff.gen.TreeGenerator.generateTree(TreeGenerator.java:41)
at com.github.gumtreediff.gen.TreeGenerator$ReaderConfigurator.reader(TreeGenerator.java:119)
at com.github.gumtreediff.gen.TreeGenerator$ReaderConfigurator.file(TreeGenerator.java:90)
at com.github.gumtreediff.gen.TreeGenerator$ReaderConfigurator.file(TreeGenerator.java:100)
at com.github.gumtreediff.gen.TreeGenerators.getTree(TreeGenerators.java:58)
at com.github.gumtreediff.gen.TreeGenerators.getTree(TreeGenerators.java:70)
at com.github.gumtreediff.client.ParseClient.getTreeContext(ParseClient.java:63)
at com.github.gumtreediff.client.ParseClient.run(ParseClient.java:54)
at com.github.gumtreediff.client.Run.startClient(Run.java:94)
at com.github.gumtreediff.client.Run.main(Run.java:128)