Fix coverage

code/node/bin/cli.rs

@@ -1,12 +1,11 @@
-#![cfg_attr(coverage_nightly, coverage(off))]
-
 use malachite_node::network::PeerId;
 
 pub struct Cli {
     pub peer_id: PeerId,
 }
 
 impl Cli {
+    #[cfg_attr(coverage_nightly, coverage(off))]
     pub fn from_env() -> Self {
         let peer_id = std::env::args()
             .nth(1)

code/node/bin/main.rs

@@ -1,4 +1,4 @@
-#![cfg_attr(coverage_nightly, coverage(off))]
+#![cfg_attr(coverage_nightly, feature(coverage_attribute))]
 
 use malachite_node::config::Config;
 use malachite_node::util::make_node;
@@ -10,6 +10,7 @@ use tracing::info;
 mod cli;
 use cli::Cli;
 
+#[cfg_attr(coverage_nightly, coverage(off))]
 #[tokio::main(flavor = "current_thread")]
 pub async fn main() {
     tracing_subscriber::fmt::init();

code/node/src/lib.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(coverage_nightly, feature(coverage_attribute))]
+
 pub mod config;
 pub mod network;
 pub mod node;