[dependencies]
smallvec = { version = "1.8.1", features = ["union", "may_dangle"] }
tracing = "0.1"
-either = "1.5.0"
rustc_ast = { path = "../rustc_ast" }
rustc_data_structures = { path = "../rustc_data_structures" }
rustc_errors = { path = "../rustc_errors" }