[TF-M-ci-notifications] Job tf-m-nightly test 1912 fail

Check console output at http://ci.trustedfirmware.org/job/tf-m-nightly/1912/

Failed Jobs: AN521_ARMCLANG_2_RegBL2_RegS_RegNS_Minsizerel_BL2_MEDIUM https://tf.validation.linaro.org/scheduler/job/2561405 AN521_GCC_2_RegBL2_RegS_RegNS_Release_BL2_MEDIUM_PSOFF https://tf.validation.linaro.org/scheduler/job/2561402 AN521_ARMCLANG_2_RegBL2_RegS_RegNS_Minsizerel_BL2_MEDIUM_PSOFF https://tf.validation.linaro.org/scheduler/job/2561403 AN521_GCC_2_RegBL2_RegS_RegNS_Minsizerel_BL2_MEDIUM https://tf.validation.linaro.org/scheduler/job/2561404

For detailed test results please refer to http://ci.trustedfirmware.org/job/tf-m-nightly/1912/artifact/test_results.cs...