Enable compilation with stable Rust.

To the Rust teams, Rust's contributors, Rocket's contributors, the
entire Rust and Rocket communities, my colleagues at Stanford and
beyond, and Jeb: thank you all. Sincerely.

To the next ~4 years of Rocket!

Closes #19.

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: Test
+name: CI
 
 on: [push, pull_request]
 
@@ -7,28 +7,39 @@ env:
 
 jobs:
   test:
-    name: "${{ matrix.os.name }} ${{ matrix.test.name }}"
+    name: "${{ matrix.os.name }} ${{ matrix.test.name }} (${{ matrix.toolchain }})"
 
     strategy:
+      fail-fast: false
       matrix:
         os:
-          - name: Linux
+          - { name: Linux, distro: ubuntu-latest }
-            distro: ubuntu-latest
+          - { name: Windows, distro: windows-latest }
-          - name: Windows
+          - { name: macOS, distro: macOS-latest }
-            distro: windows-latest
-          - name: macOS
-            distro: macOS-latest
-        toolchain:
-          - nightly
         test:
-          - name: Debug
+          - { name: Debug, flag: }
-            flag:
+          - { name: Contrib, flag: "--contrib" }
-          - name: Release
+        toolchain: [stable]
-            flag: "--release"
+        allow-failures: [false]
-          - name: Core
+        include:
-            flag: "--core"
+          - toolchain: stable
-          - name: Contrib
+            os: { name: Linux, distro: ubuntu-latest }
-            flag: "--contrib"
+            test: { name: Core, flag: "--core" }
+            allow-failures: false
+          - toolchain: stable
+            os: { name: Linux, distro: ubuntu-latest }
+            test: { name: Release, flag: "--release" }
+            allow-failures: false
+          - toolchain: nightly
+            os: { name: Linux, distro: ubuntu-latest }
+            test: { name: Debug, flag: }
+            allow-failures: true
+          - toolchain: nightly
+            os: { name: Linux, distro: ubuntu-latest }
+            test: { name: Contrib, flag: "--contrib" }
+            allow-failures: true
+
+    continue-on-error: ${{ matrix.allow-failures }}
 
     runs-on: ${{ matrix.os.distro }}
 

README.md

@@ -1,6 +1,6 @@
 # Rocket
 
-[![Build Status](https://github.com/SergioBenitez/Rocket/workflows/Test/badge.svg)](https://github.com/SergioBenitez/Rocket/actions)
+[![Build Status](https://github.com/SergioBenitez/Rocket/workflows/CI/badge.svg)](https://github.com/SergioBenitez/Rocket/actions)
 [![Rocket Homepage](https://img.shields.io/badge/web-rocket.rs-red.svg?style=flat&label=https&colorB=d33847)](https://rocket.rs)
 [![Current Crates.io Version](https://img.shields.io/crates/v/rocket.svg)](https://crates.io/crates/rocket)
 [![Matrix: #rocket:mozilla.org](https://img.shields.io/badge/style-%23rocket:mozilla.org-blue.svg?style=flat&label=[m])](https://chat.mozilla.org/#/room/#rocket:mozilla.org)

contrib/codegen/Cargo.toml

@@ -9,7 +9,6 @@ repository = "https://github.com/SergioBenitez/Rocket"
 readme = "../../README.md"
 keywords = ["rocket", "contrib", "code", "generation", "proc-macro"]
 license = "MIT OR Apache-2.0"
-build = "build.rs"
 edition = "2018"
 
 [features]
@@ -22,10 +21,6 @@ proc-macro = true
 quote = "1.0"
 devise = { git = "https://github.com/SergioBenitez/Devise.git", rev = "1e42a2691" }
 
-[build-dependencies]
-yansi = "0.5"
-version_check = "0.9.1"
-
 [dev-dependencies]
 rocket = { version = "0.5.0-dev", path = "../../core/lib" }
 rocket_contrib = { version = "0.5.0-dev", path = "../lib", features = ["diesel_sqlite_pool"] }

contrib/codegen/build.rs

@@ -1,40 +0,0 @@
-//! Ensures Rocket isn't compiled with an incompatible version of Rust.
-
-extern crate yansi;
-extern crate version_check;
-
-use yansi::{Paint, Color::{Red, Yellow, Blue}};
-
-// Specifies the minimum nightly version needed to compile Rocket.
-const MIN_DATE: &'static str = "2020-05-20";
-const MIN_VERSION: &'static str = "1.45.0-nightly";
-
-macro_rules! err {
-    ($version:expr, $date:expr, $msg:expr) => (
-        eprintln!("{} {}", Red.paint("Error:").bold(), Paint::new($msg).bold());
-        eprintln!("Installed version: {}", Yellow.paint(format!("{} ({})", $version, $date)));
-        eprintln!("Minimum required:  {}", Yellow.paint(format!("{} ({})", MIN_VERSION, MIN_DATE)));
-    )
-}
-
-fn main() {
-    if let Some((version, channel, date)) = version_check::triple() {
-        if !channel.supports_features() {
-            err!(version, date, "Rocket requires a 'dev' or 'nightly' version of rustc.");
-
-            eprint!("{}", Blue.paint("See the getting started guide ("));
-            eprint!("https://rocket.rs/v0.5/guide/getting-started/");
-            eprintln!("{}", Blue.paint(") for more information."));
-
-            panic!("Aborting compilation due to incompatible compiler.")
-        }
-
-        if !version.at_least(MIN_VERSION) || !date.at_least(MIN_DATE) {
-            err!(version, date, "Rocket requires a more recent version of rustc.");
-            panic!("Aborting compilation due to incompatible compiler.")
-        }
-    } else {
-        println!("cargo:warning={}", "Rocket was unable to check rustc compiler compatibility.");
-        println!("cargo:warning={}", "Build may fail due to incompatible rustc version.");
-    }
-}

core/codegen/Cargo.toml

@@ -9,7 +9,6 @@ repository = "https://github.com/SergioBenitez/Rocket"
 readme = "../../README.md"
 keywords = ["rocket", "web", "framework", "code", "generation"]
 license = "MIT OR Apache-2.0"
-build = "build.rs"
 edition = "2018"
 
 [lib]
@@ -22,10 +21,6 @@ rocket_http = { version = "0.5.0-dev", path = "../http/" }
 devise = { git = "https://github.com/SergioBenitez/Devise.git", rev = "1e42a2691" }
 glob = "0.3"
 
-[build-dependencies]
-yansi = "0.5"
-version_check = "0.9.1"
-
 [dev-dependencies]
 rocket = { version = "0.5.0-dev", path = "../lib" }
 version_check = "0.9"

core/codegen/build.rs

@@ -1,37 +0,0 @@
-//! Ensures Rocket isn't compiled with an incompatible version of Rust.
-
-use yansi::{Paint, Color::{Red, Yellow, Blue}};
-
-// Specifies the minimum nightly version needed to compile Rocket.
-const MIN_DATE: &'static str = "2020-05-20";
-const MIN_VERSION: &'static str = "1.45.0-nightly";
-
-macro_rules! err {
-    ($version:expr, $date:expr, $msg:expr) => (
-        eprintln!("{} {}", Red.paint("Error:").bold(), Paint::new($msg).bold());
-        eprintln!("Installed version: {}", Yellow.paint(format!("{} ({})", $version, $date)));
-        eprintln!("Minimum required:  {}", Yellow.paint(format!("{} ({})", MIN_VERSION, MIN_DATE)));
-    )
-}
-
-fn main() {
-    if let Some((version, channel, date)) = version_check::triple() {
-        if !channel.supports_features() {
-            err!(version, date, "Rocket (codegen) requires a 'dev' or 'nightly' version of rustc.");
-
-            eprint!("{}", Blue.paint("See the getting started guide ("));
-            eprint!("https://rocket.rs/v0.5/guide/getting-started/");
-            eprintln!("{}", Blue.paint(") for more information."));
-
-            panic!("Aborting compilation due to incompatible compiler.")
-        }
-
-        if !version.at_least(MIN_VERSION) || !date.at_least(MIN_DATE) {
-            err!(version, date, "Rocket (codegen) requires a more recent version of rustc.");
-            panic!("Aborting compilation due to incompatible compiler.")
-        }
-    } else {
-        println!("cargo:warning={}", "Rocket was unable to check rustc compiler compatibility.");
-        println!("cargo:warning={}", "Build may fail due to incompatible rustc version.");
-    }
-}

core/lib/build.rs

@@ -1,34 +1,21 @@
 //! Ensures Rocket isn't compiled with an incompatible version of Rust.
 
-use yansi::{Paint, Color::{Red, Yellow, Blue}};
+use yansi::{Paint, Color::{Red, Yellow}};
 
-// Specifies the minimum nightly version needed to compile Rocket.
+const MIN_VERSION: &'static str = "1.45.0";
-
-const MIN_DATE: &'static str = "2020-05-20";
-const MIN_VERSION: &'static str = "1.45.0-nightly";
 
 macro_rules! err {
-    ($version:expr, $date:expr, $msg:expr) => (
+    ($version:expr, $msg:expr) => (
         eprintln!("{} {}", Red.paint("Error:").bold(), Paint::new($msg).bold());
-        eprintln!("Installed version: {}", Yellow.paint(format!("{} ({})", $version, $date)));
+        eprintln!("Installed version: {}", Yellow.paint(format!("{}", $version)));
-        eprintln!("Minimum required:  {}", Yellow.paint(format!("{} ({})", MIN_VERSION, MIN_DATE)));
+        eprintln!("Minimum required:  {}", Yellow.paint(format!("{}", MIN_VERSION)));
     )
 }
 
 fn main() {
-    if let Some((version, channel, date)) = version_check::triple() {
+    if let Some(version) = version_check::Version::read() {
-        if !channel.supports_features() {
+        if !version.at_least(MIN_VERSION) {
-            err!(version, date, "Rocket (core) requires a 'dev' or 'nightly' version of rustc.");
+            err!(version, "Rocket requires a more recent version of rustc.");
-
-            eprint!("{}", Blue.paint("See the getting started guide ("));
-            eprint!("https://rocket.rs/v0.5/guide/getting-started/");
-            eprintln!("{}", Blue.paint(") for more information."));
-
-            panic!("Aborting compilation due to incompatible compiler.")
-        }
-
-        if !version.at_least(MIN_VERSION) || !date.at_least(MIN_DATE) {
-            err!(version, date, "Rocket (core) requires a more recent version of rustc.");
             panic!("Aborting compilation due to incompatible compiler.")
         }
     } else {