Fix nightly

Cargo.toml

@@ -81,6 +81,7 @@ futures = "0.1.21"
 clap = "2.31"
 reqwest = "0.8.6"
 influx_db_client = "0.3.4"
+dirs = "1.0.2"
 
 [dev-dependencies]
 criterion = "0.2"

src/bin/fullnode-config.rs

@@ -1,4 +1,5 @@
 extern crate clap;
+extern crate dirs;
 extern crate serde_json;
 extern crate solana;
 
@@ -7,7 +8,6 @@ use solana::crdt::{get_ip_addr, parse_port_or_addr};
 use solana::fullnode::Config;
 use solana::nat::get_public_ip_addr;
 use solana::signature::read_pkcs8;
-use std::env;
 use std::io;
 use std::net::SocketAddr;
 
@@ -64,7 +64,7 @@ fn main() {
         bind_addr
     };
 
-    let mut path = env::home_dir().expect("home directory");
+    let mut path = dirs::home_dir().expect("home directory");
     let id_path = if matches.is_present("keypair") {
         matches.value_of("keypair").unwrap()
     } else {

src/bin/keygen.rs

@@ -1,11 +1,11 @@
 extern crate clap;
+extern crate dirs;
 extern crate ring;
 extern crate serde_json;
 
 use clap::{App, Arg};
 use ring::rand::SystemRandom;
 use ring::signature::Ed25519KeyPair;
-use std::env;
 use std::error;
 use std::fs::{self, File};
 use std::io::Write;
@@ -27,7 +27,7 @@ fn main() -> Result<(), Box<error::Error>> {
     let pkcs8_bytes = Ed25519KeyPair::generate_pkcs8(&rnd)?;
     let serialized = serde_json::to_string(&pkcs8_bytes.to_vec())?;
 
-    let mut path = env::home_dir().expect("home directory");
+    let mut path = dirs::home_dir().expect("home directory");
     let outfile = if matches.is_present("outfile") {
         matches.value_of("outfile").unwrap()
     } else {

src/bin/wallet.rs

@@ -2,6 +2,7 @@ extern crate atty;
 extern crate bincode;
 extern crate bs58;
 extern crate clap;
+extern crate dirs;
 extern crate env_logger;
 extern crate serde_json;
 extern crate solana;
@@ -13,7 +14,6 @@ use solana::drone::DroneRequest;
 use solana::fullnode::Config;
 use solana::signature::{read_keypair, KeyPair, KeyPairUtil, PublicKey, Signature};
 use solana::thin_client::ThinClient;
-use std::env;
 use std::error;
 use std::fmt;
 use std::fs::File;
@@ -148,7 +148,7 @@ fn parse_args() -> Result<WalletConfig, Box<error::Error>> {
         leader = NodeInfo::new_leader(&server_addr);
     };
 
-    let mut path = env::home_dir().expect("home directory");
+    let mut path = dirs::home_dir().expect("home directory");
     let id_path = if matches.is_present("keypair") {
         matches.value_of("keypair").unwrap()
     } else {