Fix trivial clippy lints

Author: thomaseizinger

src/docker/bitcoin.rs

@@ -16,8 +16,8 @@ use shiplift::ContainerOptions;
 
 const IMAGE: &str = "coblox/bitcoin-core:0.17.0";
 
-const USERNAME: &'static str = "bitcoin";
-const PASSWORD: &'static str = "t68ej4UX2pB0cLlGwSwHFBLKxXYgomkXyFyxuBmm2U8=";
+const USERNAME: &str = "bitcoin";
+const PASSWORD: &str = "t68ej4UX2pB0cLlGwSwHFBLKxXYgomkXyFyxuBmm2U8=";
 
 #[derive(derive_more::Display, Copy, Clone)]
 #[display(fmt = "127.0.0.1:{}", port)]

src/docker/mod.rs

@@ -45,7 +45,7 @@ pub async fn start(
 
     let container = docker.containers().get(&container.id);
 
-    let _ = container.start().compat().await?;
+    container.start().compat().await?;
 
     let _ = container
         .logs(