=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching pdf-core-0.9.0.gem
=> Total size: 43520 bytes
=> Checksum SHA1 OK for pdf-core-0.9.0.gem
=> Checksum RMD160 OK for pdf-core-0.9.0.gem
=> Checksum SHA512 OK for pdf-core-0.9.0.gem