=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching racket-6.12-src.tgz
=> Total size: 22271046 bytes
=> Checksum SHA1 OK for racket-6.12-src.tgz
=> Checksum RMD160 OK for racket-6.12-src.tgz
=> Checksum SHA512 OK for racket-6.12-src.tgz