Remove default-except-unstable

… and use remaining unstable features unconditionally.
This doesn’t actually change the set of crates that can build on the Stable channel.

components/gfx/Cargo.toml

@@ -13,9 +13,6 @@ path = "lib.rs"
 test = false
 doctest = false
 
-[features]
-unstable = ["packed_simd"]
-
 [dependencies]
 app_units = "0.7"
 bitflags = "1.0"
@@ -31,7 +28,7 @@ log = "0.4"
 malloc_size_of = { path = "../malloc_size_of" }
 net_traits = {path = "../net_traits"}
 ordered-float = "1.0"
-packed_simd = {version = "0.3", optional = true}
+packed_simd = "0.3"
 range = {path = "../range"}
 serde = "1.0"
 servo_arc = {path = "../servo_arc"}

components/gfx/text/glyph.rs

@@ -4,10 +4,7 @@
 
 use app_units::Au;
 use euclid::Point2D;
-#[cfg(all(
-    feature = "unstable",
-    any(target_feature = "sse2", target_feature = "neon")
-))]
+#[cfg(any(target_feature = "sse2", target_feature = "neon"))]
 use packed_simd::u32x4;
 use range::{self, EachIndex, Range, RangeIndex};
 use std::cmp::{Ordering, PartialOrd};
@@ -75,7 +72,6 @@ pub type GlyphId = u32;
 // TODO: make this more type-safe.
 
 const FLAG_CHAR_IS_SPACE: u32 = 0x40000000;
-#[cfg(feature = "unstable")]
 #[cfg(any(target_feature = "sse2", target_feature = "neon"))]
 const FLAG_CHAR_IS_SPACE_SHIFT: u32 = 30;
 const FLAG_IS_SIMPLE_GLYPH: u32 = 0x80000000;
@@ -625,7 +621,6 @@ impl<'a> GlyphStore {
     }
 
     #[inline]
-    #[cfg(feature = "unstable")]
     #[cfg(any(target_feature = "sse2", target_feature = "neon"))]
     fn advance_for_byte_range_simple_glyphs(
         &self,
@@ -672,10 +667,7 @@ impl<'a> GlyphStore {
 
     /// When SIMD isn't available, fallback to the slow path.
     #[inline]
-    #[cfg(not(all(
-        feature = "unstable",
-        any(target_feature = "sse2", target_feature = "neon")
-    )))]
+    #[cfg(not(any(target_feature = "sse2", target_feature = "neon")))]
     fn advance_for_byte_range_simple_glyphs(
         &self,
         range: &Range<ByteIndex>,
@@ -686,7 +678,6 @@ impl<'a> GlyphStore {
 
     /// Used for SIMD.
     #[inline]
-    #[cfg(feature = "unstable")]
     #[cfg(any(target_feature = "sse2", target_feature = "neon"))]
     #[allow(unsafe_code)]
     fn transmute_entry_buffer_to_u32_buffer(&self) -> &[u32] {

components/layout_thread/Cargo.toml

@@ -10,9 +10,6 @@ publish = false
 name = "layout_thread"
 path = "lib.rs"
 
-[features]
-unstable = ["parking_lot/nightly"]
-
 [dependencies]
 app_units = "0.7"
 atomic_refcell = "0.1"
@@ -36,7 +33,7 @@ malloc_size_of = { path = "../malloc_size_of" }
 metrics = {path = "../metrics"}
 msg = {path = "../msg"}
 net_traits = {path = "../net_traits"}
-parking_lot = "0.8"
+parking_lot = {version = "0.8", features = ["nightly"]}
 profile_traits = {path = "../profile_traits"}
 range = {path = "../range"}
 rayon = "1"

components/script/Cargo.toml

@@ -15,7 +15,6 @@ path = "lib.rs"
 [features]
 debugmozjs = ['js/debugmozjs']
 profilemozjs = ['js/profilemozjs']
-unstable = []
 unrooted_must_root_lint = ["script_plugins/unrooted_must_root_lint"]
 webidl_lint = ["script_plugins/webidl_lint"]
 default = ["unrooted_must_root_lint", "webidl_lint"]

components/script/dom/bindings/conversions.rs

@@ -69,10 +69,7 @@ pub trait IDLInterface {
 }
 
 /// A trait to mark an IDL interface as deriving from another one.
-#[cfg_attr(
-    feature = "unstable",
-    rustc_on_unimplemented(message = "The IDL interface `{Self}` is not derived from `{T}`.")
-)]
+#[rustc_on_unimplemented(message = "The IDL interface `{Self}` is not derived from `{T}`.")]
 pub trait DerivedFrom<T: Castable>: Castable {}
 
 impl<T: Float + ToJSValConvertible> ToJSValConvertible for Finite<T> {

components/script/dom/bindings/root.rs

@@ -330,13 +330,13 @@ impl<T: DomObject> Deref for Dom<T> {
 
 unsafe impl<T: DomObject> JSTraceable for Dom<T> {
     unsafe fn trace(&self, trc: *mut JSTracer) {
-        #[cfg(all(feature = "unstable", debug_assertions))]
-        let trace_str = format!("for {} on heap", ::std::intrinsics::type_name::<T>());
-        #[cfg(all(feature = "unstable", debug_assertions))]
-        let trace_info = &trace_str[..];
-        #[cfg(not(all(feature = "unstable", debug_assertions)))]
-        let trace_info = "for DOM object on heap";
-
+        let trace_string;
+        let trace_info = if cfg!(debug_assertions) {
+            trace_string = format!("for {} on heap", ::std::intrinsics::type_name::<T>());
+            &trace_string[..]
+        } else {
+            "for DOM object on heap"
+        };
         trace_reflector(trc, trace_info, (*self.ptr.as_ptr()).reflector());
     }
 }

components/script/dom/window.rs

@@ -938,10 +938,7 @@ impl WindowMethods for Window {
 
     #[allow(unsafe_code)]
     fn Trap(&self) {
-        #[cfg(feature = "unstable")]
-        unsafe {
-            ::std::intrinsics::breakpoint()
-        }
+        unsafe { ::std::intrinsics::breakpoint() }
     }
 
     #[allow(unsafe_code)]

components/script/lib.rs

@@ -2,11 +2,11 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-#![cfg_attr(feature = "unstable", feature(core_intrinsics))]
-#![cfg_attr(feature = "unstable", feature(on_unimplemented))]
 #![feature(const_fn)]
+#![feature(core_intrinsics)]
 #![feature(drain_filter)]
 #![feature(inner_deref)]
+#![feature(on_unimplemented)]
 #![feature(plugin)]
 #![feature(type_alias_enum_variants)]
 #![deny(unsafe_code)]

components/script/task.rs

@@ -32,14 +32,7 @@ macro_rules! task {
 pub trait TaskOnce: Send {
     #[allow(unsafe_code)]
     fn name(&self) -> &'static str {
-        #[cfg(feature = "unstable")]
-        unsafe {
-            ::std::intrinsics::type_name::<Self>()
-        }
-        #[cfg(not(feature = "unstable"))]
-        {
-            "(task name unknown)"
-        }
+        unsafe { ::std::intrinsics::type_name::<Self>() }
     }
 
     fn run_once(self);

components/servo/Cargo.toml

@@ -26,9 +26,6 @@ uwp = ["servo_config/uwp"]
 webrender_debugger = ["webrender/debugger"]
 no_static_freetype = ["webrender/no_static_freetype"]
 oculusvr = ["webvr/oculusvr"]
-unstable = [
-    "script/unstable",
-]
 webdriver = ["webdriver_server"]
 webgl_backtrace = [
     "script/webgl_backtrace",

etc/taskcluster/decision_task.py

@@ -185,7 +185,6 @@ def linux_tidy_unit_docs():
             ./mach package --dev
             ./mach build --dev --features raqote_backend
             ./mach build --dev --libsimpleservo
-            ./mach build --dev --no-default-features --features default-except-unstable
             ./mach test-tidy --no-progress --self-test
 
             ./etc/memory_reports_over_time.py --test

ports/glutin/Cargo.toml

@@ -28,16 +28,14 @@ ProductName = "Servo"
 
 [features]
 azure_backend = ["libservo/azure_backend"]
-default = ["unstable", "default-except-unstable"]
-default-except-unstable = ["webdriver", "max_log_level"]
+default = ["webdriver", "max_log_level"]
 energy-profiling = ["libservo/energy-profiling"]
 debugmozjs = ["libservo/debugmozjs"]
 js_backtrace = ["libservo/js_backtrace"]
 max_log_level = ["log/release_max_level_info"]
 native-bluetooth = ["libservo/native-bluetooth"]
 profilemozjs = ["libservo/profilemozjs"]
 raqote_backend = ["libservo/raqote_backend"]
-unstable = ["libservo/unstable"]
 webdriver = ["libservo/webdriver"]
 webgl_backtrace = ["libservo/webgl_backtrace"]
 webrender_debugger = ["libservo/webrender_debugger"]

ports/glutin/main.rs

@@ -15,7 +15,7 @@
 //!
 //! [glutin]: https://github.com/tomaka/glutin
 
-#![cfg_attr(feature = "unstable", feature(core_intrinsics))]
+#![feature(core_intrinsics)]
 
 #[cfg(not(target_os = "android"))]
 include!("main2.rs");

ports/glutin/main2.rs

@@ -6,7 +6,7 @@
 extern crate lazy_static;
 #[macro_use]
 extern crate log;
-#[cfg(all(feature = "unstable", any(target_os = "macos", target_os = "linux")))]
+#[cfg(any(target_os = "macos", target_os = "linux"))]
 #[macro_use]
 extern crate sig;
 
@@ -42,13 +42,10 @@ pub mod platform {
     pub fn deinit() {}
 }
 
-#[cfg(any(
-    not(feature = "unstable"),
-    not(any(target_os = "macos", target_os = "linux"))
-))]
+#[cfg(not(any(target_os = "macos", target_os = "linux")))]
 fn install_crash_handler() {}
 
-#[cfg(all(feature = "unstable", any(target_os = "macos", target_os = "linux")))]
+#[cfg(any(target_os = "macos", target_os = "linux"))]
 fn install_crash_handler() {
     use backtrace::Backtrace;
     use libc::_exit;

ports/libsimpleservo/api/Cargo.toml

@@ -27,8 +27,7 @@ gl_generator = "0.11"
 
 [features]
 azure_backend = ["libservo/azure_backend"]
-default = ["unstable", "default-except-unstable"]
-default-except-unstable = ["webdriver", "max_log_level"]
+default = ["webdriver", "max_log_level"]
 debugmozjs = ["libservo/debugmozjs"]
 energy-profiling = ["libservo/energy-profiling"]
 googlevr = ["libservo/googlevr"]
@@ -40,6 +39,5 @@ no_wgl = ["libservo/no_wgl"]
 oculusvr = ["libservo/oculusvr"]
 raqote_backend = ["libservo/raqote_backend"]
 webdriver = ["libservo/webdriver"]
-unstable = ["libservo/unstable"]
 uwp = ["libservo/uwp"]
 webgl_backtrace = ["libservo/webgl_backtrace"]

ports/libsimpleservo/capi/Cargo.toml

@@ -23,8 +23,7 @@ cbindgen = "0.8"
 [features]
 azure_backend = ["simpleservo/azure_backend"]
 debugmozjs = ["simpleservo/debugmozjs"]
-default = ["unstable", "default-except-unstable"]
-default-except-unstable = ["webdriver", "max_log_level"]
+default = ["webdriver", "max_log_level"]
 energy-profiling = ["simpleservo/energy-profiling"]
 googlevr = ["simpleservo/googlevr"]
 js_backtrace = ["simpleservo/js_backtrace"]
@@ -33,7 +32,6 @@ native-bluetooth = ["simpleservo/native-bluetooth"]
 no_wgl = ["simpleservo/no_wgl"]
 oculusvr = ["simpleservo/oculusvr"]
 raqote_backend = ["simpleservo/raqote_backend"]
-unstable = ["simpleservo/unstable"]
 uwp = ["simpleservo/uwp"]
 webdriver = ["simpleservo/webdriver"]
 webgl_backtrace = ["simpleservo/webgl_backtrace"]

ports/libsimpleservo/jniapi/Cargo.toml

@@ -28,15 +28,13 @@ cc = "1.0"
 [features]
 azure_backend = ["simpleservo/azure_backend"]
 debugmozjs = ["simpleservo/debugmozjs"]
-default = ["unstable", "default-except-unstable"]
-default-except-unstable = ["webdriver", "max_log_level"]
+default = ["webdriver", "max_log_level"]
 energy-profiling = ["simpleservo/energy-profiling"]
 googlevr = ["simpleservo/googlevr"]
 js_backtrace = ["simpleservo/js_backtrace"]
 max_log_level = ["simpleservo/max_log_level"]
 native-bluetooth = ["simpleservo/native-bluetooth"]
 oculusvr = ["simpleservo/oculusvr"]
 raqote_backend = ["simpleservo/raqote_backend"]
-unstable = ["simpleservo/unstable"]
 webdriver = ["simpleservo/webdriver"]
 webgl_backtrace = ["simpleservo/webgl_backtrace"]