Release 1.15.0

CHANGELOG.md

@@ -4,6 +4,11 @@
 
 -
 
+## 1.15.0
+
+- Increase minimal supported Rust version to 1.56.0.
+- Implement `UnwindSafe` even if the `std` feature is disabled.
+
 ## 1.14.0
 
 - Add extension to `unsync` and `sync` `Lazy` mut API:

Cargo.toml

@@ -1,9 +1,10 @@
 [package]
 name = "once_cell"
-version = "1.14.0"
+version = "1.15.0-pre.1"
 authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 
 description = "Single assignment cells and lazy values."
 readme = "README.md"

src/lib.rs

@@ -267,7 +267,7 @@
 //!
 //! # Minimum Supported `rustc` Version
 //!
-//! This crate's minimum supported `rustc` version is `1.36.0`.
+//! This crate's minimum supported `rustc` version is `1.56.0`.
 //!
 //! If only the `std` feature is enabled, MSRV will be updated conservatively.
 //! When using other features, like `parking_lot`, MSRV might be updated more frequently, up to the latest stable.
@@ -348,11 +348,9 @@ pub mod unsync {
         cell::{Cell, UnsafeCell},
         fmt, hint, mem,
         ops::{Deref, DerefMut},
+        panic::{RefUnwindSafe, UnwindSafe},
     };
 
-    #[cfg(feature = "std")]
-    use std::panic::{RefUnwindSafe, UnwindSafe};
-
     /// A cell which can be written to only once. It is not thread safe.
     ///
     /// Unlike [`std::cell::RefCell`], a `OnceCell` provides simple `&`
@@ -382,9 +380,7 @@ pub mod unsync {
     // `&unsync::OnceCell` to sneak a `T` through `catch_unwind`,
     // by initializing the cell in closure and extracting the value in the
     // `Drop`.
-    #[cfg(feature = "std")]
     impl<T: RefUnwindSafe + UnwindSafe> RefUnwindSafe for OnceCell<T> {}
-    #[cfg(feature = "std")]
     impl<T: UnwindSafe> UnwindSafe for OnceCell<T> {}
 
     impl<T> Default for OnceCell<T> {
@@ -680,7 +676,6 @@ pub mod unsync {
         init: Cell<Option<F>>,
     }
 
-    #[cfg(feature = "std")]
     impl<T, F: RefUnwindSafe> RefUnwindSafe for Lazy<T, F> where OnceCell<T>: RefUnwindSafe {}
 
     impl<T: fmt::Debug, F> fmt::Debug for Lazy<T, F> {
@@ -1225,7 +1220,6 @@ pub mod sync {
     unsafe impl<T, F: Send> Sync for Lazy<T, F> where OnceCell<T>: Sync {}
     // auto-derived `Send` impl is OK.
 
-    #[cfg(feature = "std")]
     impl<T, F: RefUnwindSafe> RefUnwindSafe for Lazy<T, F> where OnceCell<T>: RefUnwindSafe {}
 
     impl<T, F> Lazy<T, F> {

xtask/src/main.rs

@@ -5,7 +5,7 @@ use std::time::Instant;
 
 use xshell::{cmd, Shell};
 
-const MSRV: &str = "1.36.0";
+const MSRV: &str = "1.56.0";
 
 fn main() -> xshell::Result<()> {
     let sh = Shell::new()?;