=> Bootstrap dependency digest>=20010302: found digest-20180917
WARNING: [license.mk] Every package should define a LICENSE.
=> Checksum SHA1 OK for chessbooks/medium.zip
=> Checksum RMD160 OK for chessbooks/medium.zip
=> Checksum SHA512 OK for chessbooks/medium.zip
===> Installing dependencies for crafty-book-medium-20000511nb1
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency crafty>=17.0: found crafty-22.1nb2
===> Overriding tools for crafty-book-medium-20000511nb1
===> Extracting for crafty-book-medium-20000511nb1
unzip: book.txt may be corrupted due to weak text file detection heuristic
===> Patching for crafty-book-medium-20000511nb1
===> Creating toolchain wrappers for crafty-book-medium-20000511nb1