travis.ci: enable ctest_output_on_failure

gcontini

2020-04-26 b01f4512ae3aa25426cb84758a791478ab68d5d7

 src/library/base/CMakeLists.txt

@@ -3,10 +3,8 @@
    StringUtils.cpp
    file_utils.cpp
    base64.cpp
    logger.c
    logger.cpp
)

add_dependencies( base project_initialize )

if(CODE_COVERAGE AND UNIX)
     MESSAGE(STATUS "Enabling code coverage")