Comment 6 for bug 1803107

Interesting thing is that the Version of Glbinding hasn't changed between the last green appveyor build and the first red one. Also boost version hasn't changed.
Changes in MSYS2 I could identify from the log were:

Sdl2 2.0.8  2.0.9
Fluidsynth 1.1.11  2.0.0
glib2 2.56.1  2.58.1
harfbuzz 1.8.8  2.1.0
opus 1.3 (not part of the chain previously)
opusfile 0.11 (not part of the chain previously)
sdl2mixer 2.0.2  2.0.4