Not many jdk developers build the docs on a regular basis that I know of. The docs are certainly built nightly from the master area (jdk7/jdk7), and should be built as part of the promoted build process.
I have not seen this problem before. I noticed that the sourcepath is a little strange: -sourcepath "../../src/share/classes:../../src/solaris/classes:/mnt/builder/icedtea/gensrc:../../src/share/doc/stub:/share/classes:/mnt/builder/icedtea/impsrc" \ It include a path /share/classes ???? -kto