For some reason the verbose logging from CMS is interleaved with ParNew logging:
#0: [GC (Allocation Failure) #0: [ParNew: 2693K->320K(3072K), 0.0201404 secs]#1: [CMS: 253K->566K(6848K), 0.0341666 secs] 2693K->566K(9920K), [Metaspace: 77K->77K(4400K)], 0.0562567 secs] [Times: user=0.06 sys=0.01 real=0.05 secs]

The test expects #1 to be in the beginning of a line, which it isn't here, and the test fails.