dependency builder is thrown off-guard by extra crate types

[RalfJung]

Having a line like this in any dependency manifest leads to a panic and a lot of raw JSON on the terminal:

[lib]
crate-type = ["staticlib", "lib"]

[oli-obk]

on 0.23 the issue is not a panic or raw json, but just that the crate isn't found and made available to tests