rustc_errors = { path = "../rustc_errors" }
rustc_session = { path = "../rustc_session" }
rustc_ast = { path = "../rustc_ast" }
-smallvec = { version = "1.6.1", features = ["union", "may_dangle"] }
+smallvec = { version = "1.8.1", features = ["union", "may_dangle"] }