Update MSRV to Rust 1.48.0

In order to depend on the new upcoming version of `bitcoin` we need to
bump our MSRV.

Author: tcharding

.github/workflows/rust.yml

@@ -15,7 +15,7 @@ jobs:
                     - rust: nightly
                       env:
                           RUSTFMTCHK: false
-                    - rust: 1.41.1
+                    - rust: 1.48.0
                       env:
                           RUSTFMTCHK: false
         steps:

CHANGELOG.md

@@ -1,3 +1,7 @@
+# Unreleased
+
+- MSRV changed from 1.41.1 to 1.48.0
+
 # 0.17.0
 
 - add `list_wallet_dir` rpc

README.md

@@ -47,4 +47,4 @@ The following versions are officially supported and automatically tested:
 * 0.21.0
 
 # Minimum Supported Rust Version (MSRV)
-This library should always compile with any combination of features on **Rust 1.41.1**.
+This library should always compile with any combination of features on **Rust 1.48.0**.

contrib/test.sh

@@ -1,7 +1,7 @@
 
 set -xe
 
-MSRV="1\.41"
+MSRV="1\.48"
 
 # Just echo all the relevant env vars to help debug Travis.
 echo "RUSTFMTCHECK: \"$RUSTFMTCHECK\""