=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching devtools_2.4.1.tar.gz
=> Total size: 370717 bytes
=> Checksum SHA1 OK for R/devtools_2.4.1.tar.gz
=> Checksum RMD160 OK for R/devtools_2.4.1.tar.gz
=> Checksum SHA512 OK for R/devtools_2.4.1.tar.gz
=> Checksum SHA1 OK for R/devtools_2.4.1.tar.gz
=> Checksum RMD160 OK for R/devtools_2.4.1.tar.gz
=> Checksum SHA512 OK for R/devtools_2.4.1.tar.gz