=> Bootstrap dependency digest>=20010302: found digest-20180917
=> Checksum SHA1 OK for chessbooks/medium.zip
=> Checksum RMD160 OK for chessbooks/medium.zip
=> Checksum SHA512 OK for chessbooks/medium.zip
===> Installing dependencies for exchess-book-medium-20140911
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency exchess-[0-9]*: found exchess-7.31beta
===> Overriding tools for exchess-book-medium-20140911
===> Extracting for exchess-book-medium-20140911
unzip: book.txt may be corrupted due to weak text file detection heuristic
===> Patching for exchess-book-medium-20140911
===> Creating toolchain wrappers for exchess-book-medium-20140911