rustc_target = { path = "../rustc_target" }
rustc_trait_selection = { path = "../rustc_trait_selection" }
rustc_ast = { path = "../rustc_ast" }
-smallvec = { version = "1.0", features = ["union", "may_dangle"] }
+smallvec = { version = "1.6.1", features = ["union", "may_dangle"] }