Update MSRV to match the upcoming PyO3 0.16

Author: adamreichold

.github/workflows/ci.yml

@@ -84,7 +84,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.41.1
+          toolchain: 1.48.0
           default: true
       - name: Install maturin, poetry, and toml
         run: pip install maturin poetry toml

Cargo.toml

@@ -8,6 +8,7 @@ authors = [
 description = "Rust binding of NumPy C-API"
 documentation = "https://pyo3.github.io/rust-numpy/numpy"
 edition = "2018"
+rust-version = "1.48"
 repository = "https://github.com/PyO3/rust-numpy"
 keywords = ["numpy", "python", "binding"]
 license = "BSD-2-Clause"

README.md

@@ -2,7 +2,7 @@ rust-numpy
 ===========
 [![Actions Status](https://github.com/PyO3/rust-numpy/workflows/CI/badge.svg)](https://github.com/PyO3/rust-numpy/actions)
 [![Crate](https://img.shields.io/crates/v/numpy.svg)](https://crates.io/crates/numpy)
-[![Minimum rustc 1.41](https://img.shields.io/badge/rustc-1.41+-blue.svg)](https://rust-lang.github.io/rfcs/2495-min-rust-version.html)
+[![Minimum rustc 1.48](https://img.shields.io/badge/rustc-1.48+-blue.svg)](https://rust-lang.github.io/rfcs/2495-min-rust-version.html)
 
 Rust bindings for the NumPy C-API.
 
@@ -12,7 +12,7 @@ Rust bindings for the NumPy C-API.
 
 
 ## Requirements
-- Rust >= 1.41.1
+- Rust >= 1.48.0
   - Basically, our MSRV follows the one of [PyO3](https://github.com/PyO3/pyo3)
 - Python >= 3.6
   - Python 3.5 support is dropped from 0.13