Checkout [1] as an example of the test failures. In that particular cases, the
failures is caused by the plus sign in the path being pass unescaped
(buildd-cmake_2.8.9-1~bpo60+1-armel-3Lvkef) to the regexp.
In addition to failures in the log, the following new tests also fail in 2.8.11:
243 - CTestTestMemcheckUnknown (Failed)
244 - CTestTestMemcheckUnknownQuoted (Failed)
248 - CTestTestMemcheckDummyValgrindFailPre (Failed)
249 - CTestTestMemcheckDummyValgrindFailPost (Failed)
250 - CTestTestMemcheckDummyPurify (Failed)
251 - CTestTestMemcheckDummyBC (Failed)
253 - CMake.List (Failed)
[1] https://buildd.debian.org/status/fetch.php?pkg=cmake&arch=armel&ver=2.8.9-1~bpo60%2B1&stamp=1369243896
Modestas Vainius