The edit to TestIBMBugs.java contains non-ascii characters in the comments, resulting in javac failure:

/scratch/opt/mach5/mesos/work_dir/jib-master/install/jdk11-jdk.1010/src.full/open/test/jdk/sun/nio/cs/TestIBMBugs.java:191: error: unmappable character (0xC2) for encoding US-ASCII
        // and \ufffd\ufffd andoverscore are encoded to 0x5c and 0x7e
               ^
/scratch/opt/mach5/mesos/work_dir/jib-master/install/jdk11-jdk.1010/src.full/open/test/jdk/sun/nio/cs/TestIBMBugs.java:191: error: unmappable character (0xA5) for encoding US-ASCII
        // and \ufffd\ufffd andoverscore are encoded to 0x5c and 0x7e
                ^
/scratch/opt/mach5/mesos/work_dir/jib-master/install/jdk11-jdk.1010/src.full/open/test/jdk/sun/nio/cs/TestIBMBugs.java:208: error: unmappable character (0xC2) for encoding US-ASCII
        // and \ufffd\ufffd an overscore are encoded to 0x5c and 0x7e
               ^
/scratch/opt/mach5/mesos/work_dir/jib-master/install/jdk11-jdk.1010/src.full/open/test/jdk/sun/nio/cs/TestIBMBugs.java:208: error: unmappable character (0xA5) for encoding US-ASCII
        // and \ufffd\ufffd an overscore are encoded to 0x5c and 0x7e
                ^
4 errors
result: Failed. Compilation failed: Compilation failed