ms[m]: reduced my testing matrix by dropping minor versions of some to leave this list which I think is not bad
```
clang      = ['10.0.0', '9.0.1', '8.0.0', '7.1.0', '6.0.1', '5.0.2']
gcc        = ['9.3.0', '8.4.0', '7.4.0']
boost      = ['1.72.0', '1.71.0', '1.70.0', '1.69.0', '1.68.0', '1.67.0']
hwloc      = ['2.1.0', '2.0.2', '1.11.11']
jemalloc   = ['5.2.1', '4.5.0']
gperftools = ['2.7', '2.4']
otf2       = ['2.2']
```