tokio -> tokio-timer in consensus (#2460)

substrate/Cargo.lock

@@ -3995,7 +3995,7 @@ dependencies = [
  "substrate-inherents 1.0.0",
  "substrate-primitives 1.0.0",
  "substrate-test-client 1.0.0",
- "tokio 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-timer 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]

substrate/core/consensus/common/Cargo.toml

@@ -15,7 +15,7 @@ error-chain = "0.12"
 futures = "0.1"
 runtime_version = { package = "sr-version", path = "../../sr-version" }
 runtime_primitives = { package = "sr-primitives", path = "../../sr-primitives" }
-tokio = "0.1.7"
+tokio-timer = "0.2"
 parity-codec = { version = "3.3", features = ["derive"] }
 
 [dev-dependencies]
@@ -23,4 +23,4 @@ test_client = { package = "substrate-test-client", path = "../../test-client" }
 
 [features]
 default = []
-test-helpers = []
+test-helpers = []
\ No newline at end of file

substrate/core/consensus/common/src/error.rs

@@ -35,7 +35,7 @@ error_chain! {
 		}
 
 		/// Unable to schedule wakeup.
-		FaultyTimer(e: ::tokio::timer::Error) {
+		FaultyTimer(e: ::tokio_timer::Error) {
 			description("Timer error"),
 			display("Timer error: {}", e),
 		}