=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching slack-api-1.6.1.gem
=> Total size: 29696 bytes
=> Checksum SHA1 OK for slack-api-1.6.1.gem
=> Checksum RMD160 OK for slack-api-1.6.1.gem
=> Checksum SHA512 OK for slack-api-1.6.1.gem