=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching libdwarf-20161124.tar.gz
=> Total size: 1732155 bytes
Certificate verification failed for /C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3
34374371912:error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed:/usr/src/crypto/openssl/ssl/s3_clnt.c:1269:
fetch: https://www.prevanders.net/libdwarf-20161124.tar.gz: Authentication error
fetch: Unable to fetch expected file libdwarf-20161124.tar.gz
libdwarf-20161124.tar.gz                                 0  B    0  Bps
=> Checksum SHA1 OK for libdwarf-20161124.tar.gz
=> Checksum RMD160 OK for libdwarf-20161124.tar.gz
=> Checksum SHA512 OK for libdwarf-20161124.tar.gz