diff --git a/Cargo.lock b/Cargo.lock
index 694cfac..4368248 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1007,7 +1007,6 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.116 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1016,6 +1015,7 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "semver-parser 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.116 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1121,7 +1121,7 @@ dependencies = [
  "route-recognizer 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustsec 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sass-rs 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "semver 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.116 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.116 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 84adfab..725b54c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@ maud = "0.22"
 relative-path = { version = "0.3.7", features = ["serde"] }
 route-recognizer = "0.1.12"
 rustsec = "0.6.0"
-semver = { version = "0.9.0", features = ["serde"] }
+semver = { version = "0.11", features = ["serde"] }
 serde = "1.0.27"
 serde_derive = "1.0.27"
 serde_json = "1.0.9"
diff --git a/src/engine/machines/crawler.rs b/src/engine/machines/crawler.rs
index ac6bfae..111a659 100644
--- a/src/engine/machines/crawler.rs
+++ b/src/engine/machines/crawler.rs
@@ -70,7 +70,7 @@ impl ManifestCrawler {
     }
 
     fn process_workspace(&mut self, base_path: &RelativePathBuf, members: &[RelativePathBuf], output: &mut ManifestCrawlerStepOutput) {
-        for mut path in members {
+        for path in members {
             if !path.ends_with("*") {
                 self.register_interest(base_path, path, output);
             }
diff --git a/src/main.rs b/src/main.rs
index 51b0db3..73e5a94 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,57 +1,57 @@
-#![feature(ascii_ctype)]
-#![feature(conservative_impl_trait)]
-#![feature(ip_constructors)]
-#![feature(proc_macro)]
-
 #![allow(bare_trait_objects)]
 
-
 extern crate badge;
 extern crate cadence;
-#[macro_use] extern crate failure;
-#[macro_use] extern crate futures;
+#[macro_use]
+extern crate failure;
+#[macro_use]
+extern crate futures;
 extern crate hyper;
 extern crate hyper_tls;
 extern crate indexmap;
-#[macro_use] extern crate lazy_static;
+#[macro_use]
+extern crate lazy_static;
 extern crate lru_cache;
 extern crate maud;
 extern crate relative_path;
 extern crate route_recognizer;
 extern crate rustsec;
 extern crate semver;
-#[macro_use] extern crate serde_derive;
+#[macro_use]
+extern crate serde_derive;
 extern crate serde;
 extern crate serde_json;
 extern crate shared_failure;
-#[macro_use] extern crate slog;
+#[macro_use]
+extern crate slog;
 extern crate slog_json;
 extern crate tokio_core;
 extern crate tokio_service;
 extern crate toml;
-#[macro_use] extern crate try_future;
+#[macro_use]
+extern crate try_future;
 
-mod utils;
+mod engine;
+mod interactors;
 mod models;
 mod parsers;
-mod interactors;
-mod engine;
 mod server;
+mod utils;
 
 use std::env;
-use std::net::{IpAddr, Ipv4Addr, UdpSocket, SocketAddr};
+use std::net::{IpAddr, Ipv4Addr, SocketAddr, UdpSocket};
 use std::sync::Mutex;
 
 use cadence::{QueuingMetricSink, UdpMetricSink};
 use futures::{Future, Stream};
-use hyper::Client;
 use hyper::server::Http;
+use hyper::Client;
 use hyper_tls::HttpsConnector;
 use slog::Drain;
 use tokio_core::reactor::Core;
 
-use self::server::Server;
 use self::engine::Engine;
+use self::server::Server;
 
 fn init_metrics() -> QueuingMetricSink {
     let socket = UdpSocket::bind("0.0.0.0:0").unwrap();
@@ -64,24 +64,24 @@ fn init_metrics() -> QueuingMetricSink {
 fn main() {
     let logger = slog::Logger::root(
         Mutex::new(slog_json::Json::default(std::io::stderr())).map(slog::Fuse),
-        o!("version" => env!("CARGO_PKG_VERSION"))
+        o!("version" => env!("CARGO_PKG_VERSION")),
     );
 
     let metrics = init_metrics();
 
-    let mut core = Core::new()
-        .expect("failed to create event loop");
+    let mut core = Core::new().expect("failed to create event loop");
 
     let handle = core.handle();
 
-    let connector = HttpsConnector::new(4, &handle)
-        .expect("failed to create https connector");
+    let connector = HttpsConnector::new(4, &handle).expect("failed to create https connector");
 
     let client = Client::configure()
         .connector(connector)
         .build(&core.handle());
 
-    let port = env::var("PORT").unwrap_or_else(|_| "8080".to_string()).parse()
+    let port = env::var("PORT")
+        .unwrap_or_else(|_| "8080".to_string())
+        .parse()
         .expect("could not read port");
 
     let addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::UNSPECIFIED), port);
@@ -93,7 +93,8 @@ fn main() {
 
     let server = Server::new(logger.clone(), engine);
 
-    let serve = http.serve_addr_handle(&addr, &handle, move || Ok(server.clone()))
+    let serve = http
+        .serve_addr_handle(&addr, &handle, move || Ok(server.clone()))
         .expect("failed to bind server");
 
     let serving = serve.for_each(move |conn| {