Remove rand 0.3 from the dependencies

Cargo.toml

@@ -30,7 +30,7 @@ rustdoc-args = [
 [dependencies]
 cargo-registry-s3 = { path = "src/s3", version = "0.2.0" }
 old_semver = { path = "src/old_semver", version = "0.1.0" }
-rand = "0.3"
+rand = "0.6"
 git2 = "0.6.4"
 flate2 = "1.0"
 semver = { version = "0.9", git = "https://github.com/steveklabnik/semver.git", features = ["diesel", "serde"] }

src/bin/populate.rs

@@ -10,7 +10,7 @@ use cargo_registry::{db, schema::version_downloads};
 use std::env;
 
 use diesel::prelude::*;
-use rand::{Rng, StdRng};
+use rand::{thread_rng, Rng};
 
 fn main() {
     let conn = db::connect_now().unwrap();
@@ -24,7 +24,7 @@ fn update(conn: &PgConnection) -> QueryResult<()> {
         .skip(1)
         .filter_map(|arg| arg.parse::<i32>().ok());
     for id in ids {
-        let mut rng = StdRng::new().unwrap();
+        let mut rng = thread_rng();
         let mut dls = rng.gen_range(5_000i32, 10_000);
 
         for day in 0..90 {

src/controllers/user/session.rs

@@ -2,6 +2,7 @@ use crate::controllers::prelude::*;
 
 use crate::github;
 use conduit_cookie::RequestSession;
+use rand::distributions::Alphanumeric;
 use rand::{thread_rng, Rng};
 
 use crate::models::{NewUser, User};
@@ -23,7 +24,11 @@ use crate::models::{NewUser, User};
 /// ```
 pub fn github_authorize(req: &mut dyn Request) -> CargoResult<Response> {
     // Generate a random 16 char ASCII string
-    let state: String = thread_rng().gen_ascii_chars().take(16).collect();
+    let mut rng = thread_rng();
+    let state: String = std::iter::repeat(())
+        .map(|()| rng.sample(Alphanumeric))
+        .take(16)
+        .collect();
     req.session()
         .insert("github_oauth_state".to_string(), state.clone());