Please compress huge logs before uploading. I've replaced your log with a compressed version which takes up 0.8% as much space.
"Error code: CHILDSTATUS 54172 2" means that the program whose process ID happened on your system to be 54172 exited with code 2. That tells us nothing about the actual problem. Fortunately, the log does. It says:
:info:build dyld: Library not loaded: /opt/local/lib/libicule.49.dylib
:info:build Referenced from: /opt/local/lib/libgailutil.18.dylib
:info:build Reason: image not found
This is because the icu port was updated yesterday and now no longer provides libicule.49.dylib; it now provides libicule.51.dylib, and therefore the port that provides libgailutil.18.dylib (gtk2) needs to be rebuilt.
