Fix new compiler warnings in Rust 1.21.0
@@ -29,7 +29,7 @@ serde_json = "*"
# JW: Temporarily use master branch of git until serde 1.0+ is available in crate release
sodiumoxide = { git = "https://github.com/dnaq/sodiumoxide" }
time = "*"
-toml = { version = "*", features = ["serde"], default-features = false }
+toml = { version = "*", default-features = false }
typemap = "*"
url = "*"
