=> Bootstrap dependency digest>=20010302: found digest-20160304
=> Fetching vscmV1R2.tar.gz
=> Total size: 229752 bytes
fetch: ftp://ftp.cs.indiana.edu/pub/scheme-repository/imp/vscm/vscmV1R2.tar.gz: File unavailable (e.g., file not found, no access)
fetch: Unable to fetch expected file vscmV1R2.tar.gz
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: http://downloads.sourceforge.net/sourceforge/vscm/vscmV1R2.tar.gz: Authentication error
fetch: Unable to fetch expected file vscmV1R2.tar.gz
vscmV1R2.tar.gz                                          0  B    0  Bps
=> Checksum SHA1 OK for vscmV1R2.tar.gz
=> Checksum RMD160 OK for vscmV1R2.tar.gz
=> Checksum SHA512 OK for vscmV1R2.tar.gz