=> Bootstrap dependency curl-[0-9]*: found curl-7.30.0
=> Bootstrap dependency digest>=20010302: found digest-20121220
checksum: Checksum SHA1 mismatch for youtube-dl-20130411/youtube-dl
ERROR: Make sure the Makefile and checksum file (/usr/pkgsrc/net/youtube-dl/distinfo)
ERROR: are up to date.  If you want to override this check, type
ERROR: "/usr/pkg/bin/bmake NO_CHECKSUM=yes [other args]".
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/net/youtube-dl