=> Bootstrap dependency digest>=20010302: found digest-20160304 => Fetching HardImage1.gz => Total size: 3545800 bytes fetch: ftp://ftp.arm.uk.linux.org/pub/linux/arcem/HardImage1.gz: No address record fetch: Unable to fetch expected file HardImage1.gz HardImage1.gz 0 B 0 Bps => Fetching arcem-1.50-src.zip => Total size: 1420685 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: http://downloads.sourceforge.net/sourceforge/arcem/arcem-1.50-src.zip: Authentication error fetch: Unable to fetch expected file arcem-1.50-src.zip arcem-1.50-src.zip 0 B 0 Bps => Fetching linux.rom.gz => Total size: 341085 bytes fetch: ftp://ftp.arm.uk.linux.org/pub/linux/arcem/linux.rom.gz: No address record fetch: Unable to fetch expected file linux.rom.gz linux.rom.gz 0 B 0 Bps => Checksum SHA1 OK for HardImage1.gz => Checksum RMD160 OK for HardImage1.gz => Checksum SHA512 OK for HardImage1.gz => Checksum SHA1 OK for arcem-1.50-src.zip => Checksum RMD160 OK for arcem-1.50-src.zip => Checksum SHA512 OK for arcem-1.50-src.zip => Checksum SHA1 OK for linux.rom.gz => Checksum RMD160 OK for linux.rom.gz => Checksum SHA512 OK for linux.rom.gz