When running the most recent version of systemtap checkout from the git repository a number of the tests are systemtap.base/library.exp are failing because the probes are firing twice ("(30 != 15)" at the end of failed lines).  The fedora 23 systemtap-2.9-1.fc23.x86_64 does not have this issue.

Checkout and build locally and install.  Then run the portion library.exp tests with:

make installcheck RUNTESTFLAGS="--debug systemtap.base/library.exp"

...
Running ./systemtap.base/library.exp ...
FAIL: library sdt_misc *  (30 != 15)
FAIL: library sdt_misc (dyninst) *  (0 != 15)
FAIL: library sdt_misc *libsdt*  (30 != 15)
FAIL: library sdt_misc (dyninst) *libsdt*  (0 != 15)
FAIL: library sdt_misc libsdt.so  (30 != 15)
FAIL: library sdt_misc (dyninst) libsdt.so  (0 != 15)
FAIL: library sdt_misc PATH/*libsdt*  (30 != 15)
FAIL: library sdt_misc (dyninst) PATH/*libsdt*  (0 != 15)
FAIL: library sdt_misc PATH/libsdt.so  (30 != 15)
FAIL: library sdt_misc (dyninst) PATH/libsdt.so  (0 != 15)
FAIL: library sdt_misc * rpath (30 != 15)
FAIL: library sdt_misc (dyninst) * rpath (0 != 15)
FAIL: library sdt_misc *libsdt* rpath (30 != 15)
FAIL: library sdt_misc (dyninst) *libsdt* rpath (0 != 15)
FAIL: library sdt_misc libsdt.so rpath (30 != 15)
FAIL: library sdt_misc (dyninst) libsdt.so rpath (0 != 15)
FAIL: library sdt_misc PATH/*libsdt* rpath (30 != 15)
FAIL: library sdt_misc (dyninst) PATH/*libsdt* rpath (0 != 15)
FAIL: library sdt_misc (dyninst) PATH/libsdt.so rpath (0 != 15)
FAIL: library .exported (dyninst) (0) (0 >= 3)

		=== systemtap Summary ===

# of expected passes		7
# of unexpected failures	20
make[2]: Leaving directory '/home/wcohen/research/profiling/systemtap_write/systemtap/testsuite'
if test -n ""; then mail  < systemtap.sum; fi
make[1]: Leaving directory '/home/wcohen/research/profiling/systemtap_write/systemtap/testsuite'


Looking at the testsuite/systemtap.log see 

bar begin
bar begin
bar 2
bar 2
In test_probe_2 probe 0x2
In test_probe_2 probe 0x2
In test_probe_2 probe 0x2
In test_probe_2 probe 0x2
bar end
bar end
baz 3 abc
baz 3 abc
baz begin
baz begin
In test_probe_0 probe 0x3
In test_probe_0 probe 0x3
In test_probe_3 probe 0x3 0x400900
In test_probe_3 probe 0x3 0x400900
baz end
baz end
buz 4
buz 4
buz begin
buz begin
In test_probe_4 dtrace probe 0x7ffeb0b967e0
In test_probe_4 dtrace probe 0x7ffeb0b967e0
In test_probe_1 probe 0x0
In test_probe_1 probe 0x0
buz end
buz end
Number of similar warning messages suppressed: 15.
Rerun with -v to see them.
FAIL: library sdt_misc *  (30 != 15)