Set MSRV to 1.38

Author: Disasm

riscv-rt/.travis.yml

@@ -3,7 +3,7 @@ language: rust
 rust:
 - nightly
 - stable
-- 1.31.0 # MSRV
+- 1.38.0 # MSRV
 
 env:
 - TARGET=x86_64-unknown-linux-gnu
@@ -13,12 +13,6 @@ env:
 
 if: (branch = staging OR branch = trying OR branch = master) OR (type = pull_request AND branch = master)
 
-matrix:
-  exclude:
-    - rust: 1.31.0 # MSRV
-      env: TARGET=riscv64imac-unknown-none-elf
-
-
 before_install: set -e
 
 install:

riscv-rt/src/lib.rs

@@ -2,10 +2,8 @@
 //!
 //! # Minimum Supported Rust Version (MSRV)
 //!
-//! This crate is guaranteed to compile on stable Rust 1.31 and up. It *might*
+//! This crate is guaranteed to compile on stable Rust 1.38 and up. It *might*
 //! compile with older versions but that may change in any new patch release.
-//! Note that `riscv64imac-unknown-none-elf` and `riscv64gc-unknown-none-elf` targets
-//! are not supported on stable yet.
 //!
 //! # Features
 //!