HANG: every 32-bit test on Windows Server 2016

[derekbruening]

Trying to move to Github Actions (#2323) on Server 2016 VM's and 64-bit hits #2328 while 32-bit has every single app hang up front:

2020-11-29T03:06:31.9521175Z test 3
2020-11-29T03:06:31.9522000Z         Start   3: hello
2020-11-29T03:06:31.9523132Z 
2020-11-29T03:06:31.9531488Z 3: Test command: "C:\Program Files\CMake\bin\cmake.exe" "-D" "cmd:STRING=D:/a/drmemory/drmemory/build_drmemory-dbg-32/bin/drmemor
y.exe@-debug@-dr_debug@-dr@{DRMEMORY_CTEST_DR_DIR}/..@-batch@-dr_ops@-dumpcore_mask@-dr_ops@0x87fd@-dr_ops@-stderr_mask@-dr_ops@15@-dr_ops@-msgbox_mask@-dr_op
s@0@-callstack_style@0x27@-no_results_to_stderr@--@D:/a/drmemory/drmemory/build_drmemory-dbg-32/tests/hello.exe" "-D" "TOOL_DR_HEAPSTAT:BOOL=OFF" "-D" "outpat
:STRING={DRMEMORY_CTEST_SRC_DIR}/hello.out" "-D" "respat:STRING={DRMEMORY_CTEST_SRC_DIR}/hello.res" "-D" "resmark:STRING=Details:" "-D" "nudge:STRING=D:/a/drm
emory/drmemory/build_drmemory-dbg-32/bin/drmemory.exe@-debug@-dr_debug@-dr@{DRMEMORY_CTEST_DR_DIR}/..@-batch" "-D" "VMKERNEL:BOOL=OFF" "-D" "USE_DRSYMS:BOOL=O
N" "-D" "X64:BOOL=OFF" "-D" "ARM:BOOL=" "-D" "ANDROID:BOOL=" "-D" "ADB:FILEPATH=" "-D" "toolbindir:STRING={DRMEMORY_CTEST_DR_DIR}/../bin32" "-D" "DRMEMORY_CTE
ST_SRC_DIR:STRING=D:/a/drmemory/drmemory/tests" "-D" "DRMEMORY_CTEST_DR_DIR:STRING=D:/a/drmemory/drmemory/build_drmemory-dbg-32/dynamorio/cmake" "-D" "CMAKE_S
YSTEM_VERSION:STRING=10.0.14393" "-D" "exit_code:STRING=0" "-D" "path_append:STRING=" "-D" "timeout:STRING=120" "-D" "postcmd:STRING=" "-P" "D:/a/drmemory/drm
emory/build_drmemory-dbg-32/tests/runtest.cmake"
2020-11-29T03:06:31.9540822Z 3: Test timeout computed to be: 120
2020-11-29T03:08:31.2699737Z   1/145 Test   #3: hello .............................***Timeout 120.01 sec

$ grep Timeout vs2017/5_Run\ Suite.txt 
2020-11-29T03:08:31.2699737Z   1/145 Test   #3: hello .............................***Timeout 120.01 sec
2020-11-29T03:08:31.2761422Z   2/145 Test  #20: procterm ..........................***Timeout 120.01 sec
2020-11-29T03:10:31.2794987Z   4/145 Test  #71: pcache ............................***Timeout 120.01 sec
2020-11-29T03:12:31.2889937Z   5/145 Test   #4: malloc ............................***Timeout 120.01 sec
2020-11-29T03:14:31.2981830Z   6/145 Test   #5: leak_indirect .....................***Timeout 120.01 sec
2020-11-29T03:16:31.3055641Z   7/145 Test   #6: free ..............................***Timeout 120.01 sec
2020-11-29T03:18:31.3165601Z   8/145 Test   #7: badjmp ............................***Timeout 120.01 sec
2020-11-29T03:18:34.7867533Z   9/145 Test   #2: unit_tests ........................***Timeout 600.00 sec
2020-11-29T05:54:35.3931008Z 131/145 Test #131: drfuzz_test_app_abort .............***Timeout 600.01 sec
2020-11-29T05:56:31.9095110Z 132/145 Test #132: drfuzz_test_no_crash ..............***Timeout 600.01 sec
2020-11-29T06:04:35.4098040Z 133/145 Test #133: umbra_test_empty ..................***Timeout 600.01 sec
2020-11-29T06:06:31.9270627Z 134/145 Test #134: umbra_test_shadow_mem .............***Timeout 600.01 sec
...

[derekbruening]

Even with f_global==STDERR and -verbose==2: zero output!
Seems like some missing library issue or sthg?
Probably a popup msgbox. Need rdp to figure it out.

[derekbruening]

DR commit DynamoRIO/dynamorio@724de52 from DynamoRIO/dynamorio#4589 should fix this: will close after pulling into DrM.