=> Bootstrap dependency digest>=20010302: found digest-20180917
=> Checksum SHA1 OK for b2sum-20160619-20160619.tar.gz
=> Checksum RMD160 OK for b2sum-20160619-20160619.tar.gz
=> Checksum SHA512 OK for b2sum-20160619-20160619.tar.gz
===> Installing dependencies for b2sum-20160619
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
===> Overriding tools for b2sum-20160619
===> Extracting for b2sum-20160619
tar: Global extended headers posix ustar archive. Extracting as plain files. Following files might be in the wrong directory or have wrong attributes.
===> Patching for b2sum-20160619
===> Creating toolchain wrappers for b2sum-20160619
===> Configuring for b2sum-20160619
=> Checking for portability problems in extracted files