diff --git a/.travis.yml b/.travis.yml
index b6b87e1..015b0b2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,13 +19,13 @@ matrix:
 
         # rustls-tls
         #- rust: stable
-        #- rust: nightly
-        #  env: FEATURES="--no-default-features --features rustls-tls"
+        - rust: nightly
+          env: FEATURES="--no-default-features --features rustls-tls"
 
         # default-tls and rustls-tls
         #- rust: stable
-        #- rust: nightly
-        #  env: FEATURES="--features rustls-tls"
+        - rust: nightly
+          env: FEATURES="--features rustls-tls"
 
         # socks
         #- rust: stable
diff --git a/Cargo.toml b/Cargo.toml
index f714435..d0fc01f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -50,10 +50,10 @@ native-tls = { version = "0.2", optional = true }
 tokio-tls = { version = "=0.3.0-alpha.4", optional = true }
 
 ## rustls-tls
-#hyper-rustls = { git = "https://github.com/dbcfd/hyper-rustls.git", branch = "master", optional = true }
-#rustls = { version = "0.16", features = ["dangerous_configuration"], optional = true }
-#tokio-rustls = { version = "=0.12.0-alpha.2", optional = true }
-#webpki-roots = { version = "0.17", optional = true }
+hyper-rustls = { version = "=0.18.0-alpha.1", optional = true }
+rustls = { version = "0.16", features = ["dangerous_configuration"], optional = true }
+tokio-rustls = { version = "=0.12.0-alpha.2", optional = true }
+webpki-roots = { version = "0.17", optional = true }
 
 ## socks
 #socks = { version = "0.3.2", optional = true }
@@ -77,7 +77,7 @@ tls = []
 default-tls = ["hyper-tls", "native-tls", "tls", "tokio-tls"]
 default-tls-vendored = ["default-tls", "native-tls/vendored"]
 
-#rustls-tls = ["hyper-rustls", "tokio-rustls", "webpki-roots", "rustls", "tls"]
+rustls-tls = ["hyper-rustls", "tokio-rustls", "webpki-roots", "rustls", "tls"]
 
 #trust-dns = ["trust-dns-resolver"]
 
diff --git a/src/connect.rs b/src/connect.rs
index 2c70bda..88c8875 100644
--- a/src/connect.rs
+++ b/src/connect.rs
@@ -238,12 +238,12 @@ async fn connect_with_maybe_proxy(
             // Disable Nagle's algorithm for TLS handshake
             //
             // https://www.openssl.org/docs/man1.1.1/man3/SSL_connect.html#NOTES
-            http.set_nodelay(nodelay || (dst.scheme() == "https"));
+            http.set_nodelay(no_delay || (dst.scheme() == "https"));
 
             let http = hyper_rustls::HttpsConnector::from((http, tls.clone()));
-            let (io, connected) = http.connect(dst).await;
+            let (io, connected) = http.connect(dst).await?;
             if let hyper_rustls::MaybeHttpsStream::Https(stream) = &io {
-                if !nodelay {
+                if !no_delay {
                     let (io, _) = stream.get_ref();
                     io.set_nodelay(false)?;
                 }
@@ -317,15 +317,15 @@ async fn connect_via_proxy(
                 let host = dst.host().to_owned();
                 let port = dst.port().unwrap_or(443);
                 let mut http = http.clone();
-                http.set_nodelay(nodelay);
+                http.set_nodelay(no_delay);
                 let http = hyper_rustls::HttpsConnector::from((http, tls_proxy.clone()));
                 let tls = tls.clone();
-                let (conn, connected) = http.connect(ndst).await;
+                let (conn, connected) = http.connect(ndst).await?;
                 log::trace!("tunneling HTTPS over proxy");
                 let maybe_dnsname = DNSNameRef::try_from_ascii_str(&host)
                     .map(|dnsname| dnsname.to_owned())
                     .map_err(|_| io::Error::new(io::ErrorKind::Other, "Invalid DNS Name"));
-                let tunneled = tunnel(conn, host, port, auth).await;
+                let tunneled = tunnel(conn, host, port, auth).await?;
                 let dnsname = maybe_dnsname?;
                 let io = RustlsConnector::from(tls)
                     .connect(dnsname.as_ref(), tunneled)
diff --git a/src/tls.rs b/src/tls.rs
index 19d9a73..b844d1f 100644
--- a/src/tls.rs
+++ b/src/tls.rs
@@ -97,17 +97,21 @@ impl Certificate {
         use std::io::Cursor;
 
         match self.original {
-            Cert::Der(buf) => try_!(tls
+            Cert::Der(buf) => tls
                 .root_store
                 .add(&::rustls::Certificate(buf))
-                .map_err(TLSError::WebPKIError)),
+                .map_err(|e| crate::error::from(TLSError::WebPKIError(e)))?,
             Cert::Pem(buf) => {
                 let mut pem = Cursor::new(buf);
-                let certs = try_!(pemfile::certs(&mut pem).map_err(|_| TLSError::General(
-                    String::from("No valid certificate was found")
-                )));
+                let certs = pemfile::certs(&mut pem).map_err(|_| {
+                    crate::error::from(TLSError::General(String::from(
+                        "No valid certificate was found",
+                    )))
+                })?;
                 for c in certs {
-                    try_!(tls.root_store.add(&c).map_err(TLSError::WebPKIError));
+                    tls.root_store
+                        .add(&c)
+                        .map_err(|e| crate::error::from(TLSError::WebPKIError(e)))?;
                 }
             }
         }