=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching tzinfo-2.0.1.gem
=> Total size: 71168 bytes
ftp: Error retrieving file `503 Backend unavailable, connection failed'
fetch: Unable to fetch expected file tzinfo-2.0.1.gem
=> Checksum SHA1 OK for tzinfo-2.0.1.gem
=> Checksum RMD160 OK for tzinfo-2.0.1.gem
=> Checksum SHA512 OK for tzinfo-2.0.1.gem