ci: change MSRV for bdk_esplora to 1.75 and pin broken deps

Author: notmandatory

.github/workflows/cont_integration.yml

@@ -27,7 +27,7 @@ jobs:
           - version: ${{ needs.prepare.outputs.rust_version }}
             clippy: true
           - version: 1.63.0 # Overall MSRV
-          - version: 1.75.0 # Specific MSRV for `bdk_electrum`
+          - version: 1.75.0 # Specific MSRV for `bdk_electrum` and `bdk_esplora`
         features:
           - --no-default-features --features miniscript/no-std
           - --all-features
@@ -44,11 +44,14 @@ jobs:
             profile: minimal
       - name: Rust Cache
         uses: Swatinem/rust-cache@v2.7.7
+        # TODO consider removing any MSRV for electrum and esplora until we have dependencies that support an MSRV
       - name: Pin dependencies for 1.75
         if: matrix.rust.version == '1.75.0'
         run: |
           cargo update -p home --precise "0.5.9"
           cargo update -p native-tls --precise "0.2.13"
+          cargo update -p zerofrom --precise "0.1.5"
+          cargo update -p litemap --precise "0.7.4"
       - name: Pin dependencies for MSRV
         if: matrix.rust.version == '1.63.0'
         run: ./ci/pin-msrv.sh
@@ -57,8 +60,8 @@ jobs:
           MATRIX_RUST_VERSION: ${{ matrix.rust.version }}
         run: |
           if [ $MATRIX_RUST_VERSION = '1.63.0' ]; then
-            cargo build --workspace --exclude 'example_*' --exclude 'bdk_electrum' ${{ matrix.features }}
-            cargo test --workspace --exclude 'example_*' --exclude 'bdk_electrum' ${{ matrix.features }}
+            cargo build --workspace --exclude 'example_*' --exclude 'bdk_electrum' --exclude 'bdk_esplora' ${{ matrix.features }}
+            cargo test --workspace --exclude 'example_*' --exclude 'bdk_electrum' --exclude 'bdk_esplora' ${{ matrix.features }}
           else
             cargo build --workspace --exclude 'example_*' ${{ matrix.features }}
             cargo test --workspace --exclude 'example_*' ${{ matrix.features }}

README.md

@@ -68,10 +68,12 @@ The BDK library maintains a MSRV of 1.63.0. This includes the following crates:
 - `bdk_core`
 - `bdk_chain`
 - `bdk_bitcoind_rpc`.
-- `bdk_esplora`.
 - `bdk_wallet`.
 
-The MSRV of `bdk_electrum` is 1.75.0.
+The MSRV is 1.75.0 for the following crates:
+
+- `bdk_electrum`.
+- `bdk_esplora`.
 
 To build with the MSRV of 1.63.0 you will need to pin dependencies by running the [`pin-msrv.sh`](./ci/pin-msrv.sh) script.