c-m-rt: revert MSRV to 1.59

Author: adamgreig

.github/workflows/rt-ci.yml

@@ -13,7 +13,7 @@ jobs:
     continue-on-error: ${{ matrix.experimental || false }}
     strategy:
       matrix:
-        rust: [nightly, stable, 1.60.0]
+        rust: [nightly, stable, 1.59.0]
 
         include:
           # Nightly is only for reference and allowed to fail

cortex-m-rt/CHANGELOG.md

@@ -15,8 +15,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   It has one option `trampoline` which is true by default. When set to false,
   no trampoline will be created and the function will be called as the
   exception handler directly.
-- MSRV increased to 1.60.0 to align with `embedded-hal` version 1.
 - Improve linker error message when code does not fit into flash.
+- Update documentation on using custom linker scripts and linker sections
+  and on the `pre_init` function.
 
 ## [v0.7.3]
 

cortex-m-rt/Cargo.toml

@@ -16,7 +16,7 @@ version = "0.7.4"
 autoexamples = true
 links = "cortex-m-rt" # Prevent multiple versions of cortex-m-rt being linked
 edition = "2021"
-rust-version = "1.60"
+rust-version = "1.59"
 
 [dependencies]
 cortex-m-rt-macros = { path = "macros", version = "=0.7.0" }

cortex-m-rt/README.md

@@ -11,7 +11,7 @@ This project is developed and maintained by the [Cortex-M team][team].
 
 # Minimum Supported Rust Version (MSRV)
 
-This crate is guaranteed to compile on stable Rust 1.60.0 and up. It *might*
+This crate is guaranteed to compile on stable Rust 1.59.0 and up. It *might*
 compile with older versions but that may change in any new patch release.
 
 # License

cortex-m-rt/macros/Cargo.toml

@@ -9,7 +9,7 @@ name = "cortex-m-rt-macros"
 repository = "https://github.com/rust-embedded/cortex-m"
 version = "0.7.0"
 edition = "2021"
-rust-version = "1.60"
+rust-version = "1.59"
 
 [lib]
 proc-macro = true

cortex-m-rt/src/lib.rs

@@ -455,7 +455,7 @@
 //!
 //! # Minimum Supported Rust Version (MSRV)
 //!
-//! The MSRV of this release is Rust 1.60.0.
+//! The MSRV of this release is Rust 1.59.0.
 
 // # Developer notes
 //