Merge #62

62: Document and test MSRV 1.32.0 r=nastevens a=ra-kete

Part of [wg/#445](rust-embedded/wg#445).

Co-authored-by: Jan Teske <jteske@posteo.net>

.travis.yml

@@ -2,11 +2,17 @@ language: rust
 sudo: false
 
 os:
-- linux
-- osx
+  - linux
+  - osx
+
+rust:
+  - nightly
+  - stable
+  # MSRV
+  - 1.32.0
 
 script:
-- rustup component add rustfmt
-- cargo build --verbose
-- if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then cargo test --verbose; fi
-- cargo fmt -- --check
+  - rustup component add rustfmt
+  - cargo build --verbose
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then cargo test --verbose; fi
+  - cargo fmt -- --check

README.md

@@ -51,6 +51,11 @@ Most likely, the machine you are running on is not your development
 machine (although it could be).  In those cases, you will need to
 cross-compile.  See https://github.com/japaric/rust-cross for pointers.
 
+## Minimum Supported Rust Version (MSRV)
+
+This crate is guaranteed to compile on stable Rust 1.32.0 and up. It *might*
+compile with older versions but that may change in any new patch release.
+
 ## License
 
 Licensed under either of