Update Rust to nightly-2019-09-19. This version matches Tock PR 1349, and includes core::future::Future as a stabilized feature.

diff --git a/.travis.yml b/.travis.yml
index 9b5cb1b..26f22ef 100644
--- a/.travis.yml
+++ b/.travis.yml

@@ -1,6 +1,6 @@
 language: rust
 rust:
-  - nightly-2018-11-30
+  - nightly-2019-09-19
 
 os:
   - linux

diff --git a/examples/gpio.rs b/examples/gpio.rs
index ff047da..a09a2b2 100644
--- a/examples/gpio.rs
+++ b/examples/gpio.rs

@@ -12,7 +12,7 @@
     loop {
         pin.set_high();
         timer::sleep(Duration::from_ms(500));
-        pin.set_low();;
+        pin.set_low();
         timer::sleep(Duration::from_ms(500));
     }
 }

diff --git a/examples/hardware_test.rs b/examples/hardware_test.rs
index 542ee49..c224f58 100644
--- a/examples/hardware_test.rs
+++ b/examples/hardware_test.rs

@@ -1,4 +1,3 @@
-#![feature(alloc)]
 #![no_std]
 /// Hardware regression tests.
 /// Need P0.03 and P0.04 to be connected (on a nrf52-dk).

diff --git a/examples/simple_ble.rs b/examples/simple_ble.rs
index dc99fd1..a467f97 100644
--- a/examples/simple_ble.rs
+++ b/examples/simple_ble.rs

@@ -45,7 +45,7 @@
     loop {
         led.on();
         timer::sleep(Duration::from_ms(500));
-        led.off();;
+        led.off();
         timer::sleep(Duration::from_ms(500));
     }
 }

diff --git a/rust-toolchain b/rust-toolchain
index 6fd720c..e304127 100644
--- a/rust-toolchain
+++ b/rust-toolchain

@@ -1 +1 @@
-nightly-2018-11-30
+nightly-2019-09-19

diff --git a/src/ble_parser.rs b/src/ble_parser.rs
index 6280af3..1d12b19 100644
--- a/src/ble_parser.rs
+++ b/src/ble_parser.rs

@@ -81,5 +81,4 @@
         }
         assert_eq!(find(&buf, 0xF2), None);
     }
-
 }

diff --git a/src/lib.rs b/src/lib.rs
index 49ccdcc..9b0888d 100644
--- a/src/lib.rs
+++ b/src/lib.rs

@@ -1,11 +1,4 @@
-#![feature(
-    asm,
-    alloc,
-    alloc_error_handler,
-    core_intrinsics,
-    lang_items,
-    naked_functions
-)]
+#![feature(asm, alloc_error_handler, core_intrinsics, lang_items, naked_functions)]
 #![no_std]
 
 extern crate alloc;