Since a few hudson releases ago there are added some 'strange' annotations to every single ant target in an ant-job in the console output if viewed "unformatted" (as plain text), see attached file. (maybe due to JENKINS-2137?)
example: "[8mha:AAAAYB+LCAAAAAAAAABb85aBtbiIQT6jNKU4P0+vJLE4u1gvPjGvRM8xryQksSg9tcQvvyTVvqNr/s+Vl9uYGBgqihikoKqT8/OK83NS9ZwhNEghAwQwghQWAADROOumXQAAAA==[0m"

If those annotations are needed by Hudson - fine.
But the "unformatted" console output should not contain any information that it would if the ant job would be executed outside Hudson. Those annotations make the console output hardly (human) readable.