Bump up the MSRV to 1.67.0

.github/workflows/cont_integration.yml

@@ -13,7 +13,7 @@ jobs:
       matrix:
         rust:
           - stable # STABLE
-          - 1.63.0 # MSRV
+          - 1.67.0 # MSRV
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -31,10 +31,6 @@ jobs:
         run: $HOME/.cargo/bin/rustup default ${{ matrix.rust }}
       - name: Set profile
         run: $HOME/.cargo/bin/rustup set profile minimal
-      - name: Pin dependencies for MSRV
-        if: matrix.rust == '1.63.0'
-        run: |
-          cargo update -p cc --precise "1.0.105"
       - name: Fmt
         run: cargo fmt -- --check --verbose
       - name: "[Pending]Test"

Cargo.toml

@@ -9,7 +9,7 @@ documentation = "https://docs.rs/electrum-client/"
 description = "Tapyrus Electrum client library. Supports plaintext, TLS and Onion servers."
 keywords = ["tapyrus", "electrum"]
 readme = "README.md"
-rust-version = "1.63.0"
+rust-version = "1.67.0"
 
 # loosely based on https://github.com/evgeniy-scherbina/rust-electrumx-client
 

README.md

@@ -5,7 +5,7 @@
 [GitHub Workflow]: https://github.com/bitcoindevkit/rust-electrum-client/actions?query=workflow%3ACI
 [Latest Version]: https://img.shields.io/crates/v/electrum-client.svg
 [crates.io]: https://crates.io/crates/electrum-client
-[MSRV Badge]: https://img.shields.io/badge/rustc-1.63.0%2B-lightgrey.svg
-[Rust Blog]: https://blog.rust-lang.org/2022/08/11/Rust-1.63.0.html
+[MSRV Badge]: https://img.shields.io/badge/rustc-1.67.0%2B-lightgrey.svg
+[Rust Blog]: https://blog.rust-lang.org/2023/01/26/Rust-1.67.0.html
 
 Bitcoin Electrum client library. Supports plaintext, TLS and Onion servers.