I'd be willing to bet dynamic linking would get it much closer to that ballpark and wouldn't compromise the feature set or development.
ansi_term = "0.8.0"
datetime = "0.4.3"
getopts = "0.2.14"
glob = "0.2"
lazy_static = "0.2"
libc = "0.2.9"
locale = "0.2.1"
natord = "1.0.7"
num_cpus = "1.3.0"
number_prefix = "0.2.3"
scoped_threadpool = "0.1.*"
term_grid = "0.1.2"
unicode-width = "0.1.4"
users = "0.5.2"
I'd be willing to bet dynamic linking would get it much closer to that ballpark and wouldn't compromise the feature set or development.