A patch build failed in the "uploading test results" task because the test-results.json contains improperly escaped quotes in the mock server's raw log:
"log_raw": "listening on port 39075\n 0.00 34566 -> server port 39075 (connected)\n 0.00 34566 -> 39075 OP_QUERY admin.$cmd { \"isMaster\" : 1, \"client\" : { \"driver\" : { \"name\" : \"mongoc\", \"version\" : \"1.6.0-dev\" }, \"os\" : { \"type\" : \"Linux\", \"name\" : \"Ubuntu\", \"version\" : \"16.04\", \"architecture\" : \"ppc64le\" }, \"platform\" : \"cfg=0x3820 posix=200809 stdc=201112 CC=GCC 5.4.0 20160609 CFLAGS=\\" -mcpu=power8 -mtune=power8 -mcmodel=medium -Werror\\" LDFLAGS=\\"\\"\" } }