Merge branch 'master' into fix-3078

Author: Michael Wright

Cargo.toml

@@ -59,9 +59,5 @@ derive-new = "0.5"
 # for more information.
 rustc-workspace-hack = "1.0.0"
 
-[build-dependencies]
-rustc_version = "0.2.2"
-ansi_term = "0.11"
-
 [features]
 debugging = []

build.rs

@@ -13,98 +13,11 @@
 //! This build script was originally taken from the Rocket web framework:
 //! https://github.com/SergioBenitez/Rocket
 
-use ansi_term::Colour::Red;
-use rustc_version::{version_meta, version_meta_for, Channel, Version, VersionMeta};
 use std::env;
 
 fn main() {
-    check_rustc_version();
-
     // Forward the profile to the main compilation
     println!("cargo:rustc-env=PROFILE={}", env::var("PROFILE").unwrap());
     // Don't rebuild even if nothing changed
     println!("cargo:rerun-if-changed=build.rs");
 }
-
-fn check_rustc_version() {
-    let string = include_str!("min_version.txt");
-    let min_version_meta = version_meta_for(string).expect("Could not parse version string in min_version.txt");
-    let current_version_meta = version_meta().expect("Could not retrieve current rustc version information from ENV");
-
-    let min_version = min_version_meta.clone().semver;
-    let min_date_str = min_version_meta
-        .clone()
-        .commit_date
-        .expect("min_version.txt does not contain a rustc commit date");
-
-    // Dev channel (rustc built from git) does not have any date or commit information in rustc -vV
-    // `current_version_meta.commit_date` would crash, so we return early here.
-    if current_version_meta.channel == Channel::Dev {
-        return;
-    }
-
-    let current_version = current_version_meta.clone().semver;
-    let current_date_str = current_version_meta
-        .clone()
-        .commit_date
-        .expect("current rustc version information does not contain a rustc commit date");
-
-    let print_version_err = |version: &Version, date: &str| {
-        eprintln!(
-            "> {} {}. {} {}.\n",
-            "Installed rustc version is:",
-            format!("{} ({})", version, date),
-            "Minimum required rustc version:",
-            format!("{} ({})", min_version, min_date_str)
-        );
-    };
-
-    if !correct_channel(&current_version_meta) {
-        eprintln!(
-            "\n{} {}",
-            Red.bold().paint("error:"),
-            "Clippy requires a nightly version of Rust."
-        );
-        print_version_err(&current_version, &*current_date_str);
-        eprintln!(
-            "{}{}{}",
-            "See the README (", "https://github.com/rust-lang-nursery/rust-clippy#usage", ") for more information."
-        );
-        panic!("Aborting compilation due to incompatible compiler.")
-    }
-
-    let current_date = str_to_ymd(&current_date_str).unwrap();
-    let min_date = str_to_ymd(&min_date_str).unwrap();
-
-    if current_date < min_date {
-        eprintln!(
-            "\n{} {}",
-            Red.bold().paint("error:"),
-            "Clippy does not support this version of rustc nightly."
-        );
-        eprintln!(
-            "> {}{}{}",
-            "Use `", "rustup update", "` or your preferred method to update Rust."
-        );
-        print_version_err(&current_version, &*current_date_str);
-        panic!("Aborting compilation due to incompatible compiler.")
-    }
-}
-
-fn correct_channel(version_meta: &VersionMeta) -> bool {
-    match version_meta.channel {
-        Channel::Stable | Channel::Beta => false,
-        Channel::Nightly | Channel::Dev => true,
-    }
-}
-
-/// Convert a string of %Y-%m-%d to a single u32 maintaining ordering.
-fn str_to_ymd(ymd: &str) -> Option<u32> {
-    let ymd: Vec<u32> = ymd.split("-").filter_map(|s| s.parse::<u32>().ok()).collect();
-    if ymd.len() != 3 {
-        return None;
-    }
-
-    let (y, m, d) = (ymd[0], ymd[1], ymd[2]);
-    Some((y << 9) | (m << 5) | d)
-}

clippy_lints/src/lib.rs

@@ -7,7 +7,6 @@
 #![feature(range_contains)]
 #![allow(unknown_lints, shadow_reuse, missing_docs_in_private_items)]
 #![recursion_limit = "256"]
-#![feature(iterator_find_map)]
 #![feature(macro_at_most_once_rep)]
 #![warn(rust_2018_idioms)]
 
@@ -635,6 +634,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         question_mark::QUESTION_MARK,
         ranges::ITERATOR_STEP_BY_ZERO,
         ranges::RANGE_MINUS_ONE,
+        ranges::RANGE_PLUS_ONE,
         ranges::RANGE_ZIP_WITH_LEN,
         redundant_field_names::REDUNDANT_FIELD_NAMES,
         reference::DEREF_ADDROF,
@@ -756,7 +756,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         ptr::CMP_NULL,
         ptr::PTR_ARG,
         question_mark::QUESTION_MARK,
-        ranges::RANGE_MINUS_ONE,
         redundant_field_names::REDUNDANT_FIELD_NAMES,
         regex::REGEX_MACRO,
         regex::TRIVIAL_REGEX,
@@ -816,6 +815,8 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
         precedence::PRECEDENCE,
+        ranges::RANGE_MINUS_ONE,
+        ranges::RANGE_PLUS_ONE,
         ranges::RANGE_ZIP_WITH_LEN,
         reference::DEREF_ADDROF,
         reference::REF_IN_DEREF,
@@ -921,7 +922,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         fallible_impl_from::FALLIBLE_IMPL_FROM,
         mutex_atomic::MUTEX_INTEGER,
         needless_borrow::NEEDLESS_BORROW,
-        ranges::RANGE_PLUS_ONE,
         unwrap::PANICKING_UNWRAP,
         unwrap::UNNECESSARY_UNWRAP,
     ]);

clippy_lints/src/new_without_default.rs

@@ -21,7 +21,7 @@ use crate::utils::sugg::DiagnosticBuilderExt;
 ///
 /// **Example:**
 ///
-/// ```rust,ignore
+/// ```rust
 /// struct Foo(Bar);
 ///
 /// impl Foo {
@@ -63,7 +63,7 @@ declare_clippy_lint! {
 ///
 /// **Example:**
 ///
-/// ```rust,ignore
+/// ```rust
 /// struct Foo;
 ///
 /// impl Foo {

clippy_lints/src/ranges.rs

@@ -57,7 +57,7 @@ declare_clippy_lint! {
 /// ```
 declare_clippy_lint! {
     pub RANGE_PLUS_ONE,
-    nursery,
+    complexity,
     "`x..(y+1)` reads better as `x..=y`"
 }
 
@@ -75,7 +75,7 @@ declare_clippy_lint! {
 /// ```
 declare_clippy_lint! {
     pub RANGE_MINUS_ONE,
-    style,
+    complexity,
     "`x..=(y-1)` reads better as `x..y`"
 }