Delete support for compilers without inclusive range accessors

serde/Cargo.toml

@@ -11,7 +11,7 @@ keywords = ["serde", "serialization", "no_std"]
 license = "MIT OR Apache-2.0"
 readme = "crates-io.md"
 repository = "https://github.com/serde-rs/serde"
-rust-version = "1.26"
+rust-version = "1.27"
 
 [dependencies]
 serde_derive = { version = "=1.0.179", optional = true, path = "../serde_derive" }

serde/build.rs

@@ -16,12 +16,9 @@ fn main() {
     let target = env::var("TARGET").unwrap();
     let emscripten = target == "asmjs-unknown-emscripten" || target == "wasm32-unknown-emscripten";
 
-    // Inclusive ranges methods stabilized in Rust 1.27:
-    // https://github.com/rust-lang/rust/pull/50758
-    // Also Iterator::try_for_each:
+    // Iterator::try_for_each stabilized in Rust 1.27:
     // https://blog.rust-lang.org/2018/06/21/Rust-1.27.html#library-stabilizations
     if minor < 27 {
-        println!("cargo:rustc-cfg=no_range_inclusive");
         println!("cargo:rustc-cfg=no_iterator_try_fold");
     }
 

serde/src/de/impls.rs

@@ -2238,7 +2238,6 @@ where
     }
 }
 
-#[cfg(not(no_range_inclusive))]
 impl<'de, Idx> Deserialize<'de> for RangeInclusive<Idx>
 where
     Idx: Deserialize<'de>,

serde/src/lib.rs

@@ -183,7 +183,7 @@ mod lib {
     pub use self::core::fmt::{self, Debug, Display};
     pub use self::core::marker::{self, PhantomData};
     pub use self::core::num::Wrapping;
-    pub use self::core::ops::{Bound, Range, RangeFrom, RangeTo};
+    pub use self::core::ops::{Bound, Range, RangeFrom, RangeInclusive, RangeTo};
     pub use self::core::option::{self, Option};
     pub use self::core::result::{self, Result};
     pub use self::core::time::Duration;
@@ -251,9 +251,6 @@ mod lib {
     #[cfg(feature = "std")]
     pub use std::time::{SystemTime, UNIX_EPOCH};
 
-    #[cfg(not(no_range_inclusive))]
-    pub use self::core::ops::RangeInclusive;
-
     #[cfg(all(feature = "std", no_target_has_atomic, not(no_std_atomic)))]
     pub use std::sync::atomic::{
         AtomicBool, AtomicI16, AtomicI32, AtomicI8, AtomicIsize, AtomicU16, AtomicU32, AtomicU8,

serde/src/ser/impls.rs

@@ -274,7 +274,6 @@ where
 
 ////////////////////////////////////////////////////////////////////////////////
 
-#[cfg(not(no_range_inclusive))]
 impl<Idx> Serialize for RangeInclusive<Idx>
 where
     Idx: Serialize,