Build failure of ut_time_stubs with BUILDTYPE=release

[skliper]

Describe the bug
Matrix build fails with: BUILDTYPE=release OMIT_DEPRECATED=false
See also nasa/cFS#40 (enhanced CI)

To Reproduce
Steps to reproduce the behavior:

1. See CI process/results

Expected behavior
Successful build

Error text

home/travis/build/nasa/cFS/cfe/fsw/cfe-core/ut-stubs/ut_time_stubs.c: In function ‘CFE_TIME_Print’:
/home/travis/build/nasa/cFS/cfe/fsw/cfe-core/ut-stubs/ut_time_stubs.c:106:25: error: ‘ -’ directive output may be truncated writing 2 bytes into a region of size between 0 and 18 [-Werror=format-truncation=]
              "UT %lu.%lu -",
                         ^~
In file included from /usr/include/stdio.h:862:0,
                 from /home/travis/build/nasa/cFS/cfe/fsw/cfe-core/ut-stubs/ut_time_stubs.c:35:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: ‘__builtin___snprintf_chk’ output between 9 and 27 bytes into a destination of size 24
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

System observed on:

• CI system, integration candidate bundle

Additional context
N/A

Reporter Info
Jacob Hageman - NASA/GSFC

[skliper]

@dmknutsen I haven't figured out static links to CI results, but from nasa/cFS#40, click on Details for Travis CI, then click on the failed job you are interested in (99.2 if looking at my latest rebase). Under job log you'll see the same error text as above.