I have encountered this crash-on-startup right after installing the mod. A full list of all my mods can be found in the crash log below. Thank you for your time.
crash-2019-12-27_11.55.39-client.txt

Can you upload the game's log? There's some sponge mixin's being applied that aren't listed there.

Oh, unfortunately buildcraft isn't compatible with baritone's modifications (cabaletta/baritone#760)

2019-12-27-2.log
I think this is it.