CI: Use script from rust-bitcoin-maintainer-tools

We have a CI script in the `rust-bitcoin-maintainer-tools` repository,
lets use it.

Requires adding `Cargo-minimal.lock` and `Cargo-recent.lock`. Both these
lock files are tested with all three toolchains (msrv, stable, nightly).

Note, I could not find a more recent set of dependencies that works so
the two lock files are the same.

.github/workflows/README.md

@@ -0,0 +1,23 @@
+# rust-miniscript workflow notes
+
+We are attempting to run max 20 parallel jobs using GitHub actions (usage limit for free tier).
+
+ref: https://docs.github.com/en/actions/learn-github-actions/usage-limits-billing-and-administration
+
+The minimal/recent lock files are handled by CI (`rust.yml`).
+
+## Jobs
+
+Run from `rust.yml` unless stated otherwise. Total 11 jobs.
+
+1.  `Stable - minimal`
+2.  `Stable - recent`
+3.  `Nightly - minimal`
+4.  `Nightly - recent`
+5.  `MSRV - minimal`
+6.  `Integration - 0.18.0`
+7.  `Integration - 0.18.1`
+8.  `Integration - 0.19.0.1`
+9.  `Integration - 0.19.1`
+10. `Integration - 0.20.0`
+11. `Integration - 0.21.0`

.github/workflows/rust.yml

@@ -1,42 +1,91 @@
-on: [push, pull_request]
+---   # rust-bitcoincore-rpc CI: If you edit this file please update README.md
+on:   # yamllint disable-line rule:truthy
+  push:
+    branches:
+      - master
+      - 'test-ci/**'
+  pull_request:
 
 name: Continuous integration
 
 jobs:
-  tests:
-    name: Tests
+  Stable:                       # 2 jobs, one per lock file.
+    name: Test - stable toolchain
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
-        include:
-          - rust: stable
-            env:
-              RUSTFMTCHK: true
-          - rust: nightly
-            env:
-              RUSTFMTCHK: false
-          - rust: 1.56.1
-            env:
-              RUSTFMTCHK: false
+        dep: [minimal, recent]
     steps:
-      - name: Checkout Crate
-        uses: actions/checkout@v2
-      - name: Checkout Toolchain
-        uses: actions-rs/toolchain@v1
+      - name: "Checkout repo"
+        uses: actions/checkout@v4
+      - name: "Checkout maintainer tools"
+        uses: actions/checkout@v4
         with:
-          profile: minimal
-          toolchain: ${{ matrix.rust }}
-          override: true
-      - name: Running test script
-        env: ${{ matrix.env }}
-        run: ./contrib/test.sh
+          repository: rust-bitcoin/rust-bitcoin-maintainer-tools
+          rev: b2ac115
+          path: maintainer-tools
+      - name: "Select toolchain"
+        uses: dtolnay/rust-toolchain@stable
+      - name: "Set dependencies"
+        run: cp Cargo-${{ matrix.dep }}.lock Cargo.lock
+      - name: "Run test script"
+        run: ./maintainer-tools/ci/run_task.sh stable
 
-  integrations-tests:
-    name: Integration Tests
+  Nightly:                      #  2 jobs, one per lock file.
+    name: Test - nightly toolchain
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
+      matrix:
+        dep: [minimal, recent]
+    steps:
+      - name: "Checkout repo"
+        uses: actions/checkout@v4
+      - name: "Checkout maintainer tools"
+        uses: actions/checkout@v4
+        with:
+          repository: rust-bitcoin/rust-bitcoin-maintainer-tools
+          rev: b2ac115
+          path: maintainer-tools
+      - name: "Select toolchain"
+        uses: dtolnay/rust-toolchain@nightly
+      - name: "Set dependencies"
+        run: cp Cargo-${{ matrix.dep }}.lock Cargo.lock
+      - name: "Run test script"
+        run: ./maintainer-tools/ci/run_task.sh nightly
+
+  MSRV:          # 2 jobs, one per lock file.
+    name: Test - 1.56.1 toolchain
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        dep: [minimal, recent]
+    steps:
+      - name: "Checkout repo"
+        uses: actions/checkout@v4
+      - name: "Checkout maintainer tools"
+        uses: actions/checkout@v4
+        with:
+          repository: rust-bitcoin/rust-bitcoin-maintainer-tools
+          rev: b2ac115
+          path: maintainer-tools
+      - name: "Select toolchain"
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: "1.56.1"
+      - name: "Set dependencies"
+        run: cp Cargo-${{ matrix.dep }}.lock Cargo.lock
+      - name: "Run test script"
+        run: ./maintainer-tools/ci/run_task.sh msrv
+
+  Integration:                  # 1 job for each Bitcoin Core version.
+    name: Integration tests - stable toolchain
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
       matrix:
-        rust: [stable]
         bitcoinversion:
           [
             "0.18.0",
@@ -48,15 +97,11 @@ jobs:
             "0.21.0",
           ]
     steps:
-      - name: Checkout Crate
-        uses: actions/checkout@v2
-      - name: Checkout Toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: ${{ matrix.rust }}
-          override: true
-      - name: Running test script
+      - name: "Checkout repo"
+        uses: actions/checkout@v4
+      - name: "Select toolchain"
+        uses: dtolnay/rust-toolchain@stable
+      - name: "Run integration tests"
         env:
           BITCOINVERSION: ${{ matrix.bitcoinversion }}
-        run: ./contrib/test.sh
+        run: ./contrib/integration_test.sh