=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching sks-1.1.5.tgz
=> Total size: 362941 bytes
Certificate verification failed for /C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 Extended Validation Server CA
34374371912:error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed:/usr/src/crypto/openssl/ssl/s3_clnt.c:1269:
fetch: https://bitbucket.org/skskeyserver/sks-keyserver/downloads/sks-1.1.5.tgz: Authentication error
fetch: Unable to fetch expected file sks-1.1.5.tgz
sks-1.1.5.tgz                                            0  B    0  Bps
=> Checksum SHA1 OK for sks-1.1.5.tgz
=> Checksum RMD160 OK for sks-1.1.5.tgz
=> Checksum SHA512 OK for sks-1.1.5.tgz