bump MSRV to 1.59.0

Author: almindor

.github/workflows/ci.yaml

@@ -11,8 +11,8 @@ jobs:
     continue-on-error: ${{ matrix.experimental || false }}
     strategy:
       matrix:
-        # All generated code should be running on stable now, MRSV is 1.42.0
-        rust: [nightly, stable, 1.42.0]
+        # All generated code should be running on stable now, MRSV is 1.59.0
+        rust: [nightly, stable, 1.59.0]
 
         include:
           # Nightly is only for reference and allowed to fail

README.md

@@ -12,7 +12,7 @@ This project is developed and maintained by the [RISC-V team][team].
 
 ## Minimum Supported Rust Version (MSRV)
 
-This crate is guaranteed to compile on stable Rust 1.42.0 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