For me it could not find otool-classic. Stack overflow suggested copying otool-classic to the expected place and I was able to run the command after that. xcrun --find otool-classic                                                                                                                                 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/otool-classic cp /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/otool-classic /Applications/Xcode.app/Contents/Developer/usr/bin

Actually, it seems in my last reply it worked because of coincidence, I still get some errors when running the command again, just not always. The command finished successfully what it was supposed to do in spite of the bitcode-build-tool errors.