Refs: https://github.com/nodejs/node/pull/20137#issuecomment-385095229 The stress job appears not to be using the compiler selector script added by nodejs/build#1240 so it's using the wrong level of gcc on AIX for master/v10.x. e.g., https://ci.nodejs.org/job/node-stress-single-test/1825/nodes=aix61-ppc64/consoleFull ``` 16:38:06 WARNING: C++ compiler too old, need g++ 4.9.4 or clang++ 3.4.2 (CXX=g++) ```