Auto merge of #400 - servo:env_logger, r=emilio

Update env_logger.

Author: bors-servo

bindgen/Cargo.toml

@@ -11,15 +11,15 @@ license = "BSD-3-Clause"
 name = "bindgen"
 readme = "README.md"
 repository = "https://github.com/servo/rust-bindgen"
-version = "0.17.0"
+version = "0.17.1"
 workspace = ".."
 
 [dependencies]
 clang-sys = "0.12"
 clap = "2"
 libbindgen = { path = "../libbindgen" }
 log = "0.3"
-env_logger = "0.3"
+env_logger = "0.4"
 rustc-serialize = "0.3.19"
 
 [features]

libbindgen/Cargo.toml

@@ -12,7 +12,7 @@ license = "BSD-3-Clause"
 name = "libbindgen"
 readme = "README.md"
 repository = "https://github.com/servo/rust-bindgen"
-version = "0.1.6"
+version = "0.1.7"
 workspace = ".."
 
 [dev-dependencies]
@@ -38,7 +38,7 @@ version = "0.34"
 
 [dependencies.env_logger]
 optional = true
-version = "0.3"
+version = "0.4"
 
 [dependencies.log]
 optional = true