[dependencies]
libc = "0.2"
atty = "0.2"
-tracing = { version = "0.1.25" }
+tracing = { version = "0.1.28" }
tracing-subscriber = { version = "0.2.16", default-features = false, features = ["fmt", "env-filter", "smallvec", "parking_lot", "ansi"] }
tracing-tree = "0.1.9"
rustc_middle = { path = "../rustc_middle" }