diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7a3bb9e925..410f05cf08 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,6 +20,7 @@ env:
   CARGO_TERM_COLOR: always
   CARGO_UNSTABLE_SPARSE_REGISTRY: true
   CARGO_INCREMENTAL: 0
+  RUSTUP_PERMIT_COPY_RENAME: true
   PROTOC: protoc
   TERM: unknown
   ## Must be a JSon string
@@ -69,12 +70,16 @@ jobs:
             tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.nightly_toolchain }}-nightly-${{ hashFiles('**/Cargo.lock') }}-small
             tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.nightly_toolchain }}-nightly-${{ hashFiles('**/Cargo.lock') }}
             tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.nightly_toolchain }}-nightly
+      - name: rust-toolchain.toml override by renaming
+        run: mv rust-toolchain.toml rust-toolchain.toml.bak
       - name: cargo format
-        run: cargo +nightly fmt --all -- --check
+        run: cargo +${{ env.nightly_toolchain }} fmt --all -- --check
       - name: Install cargo-lints
         run: cargo install cargo-lints
       - name: Clippy check (with lints)
-        run: cargo +nightly lints clippy --all-targets --all-features
+        run: cargo +${{ env.nightly_toolchain }} lints clippy --all-targets --all-features
+      - name: rust-toolchain.toml.bak renaming back
+        run: mv rust-toolchain.toml.bak rust-toolchain.toml
 
   machete:
     # Checks for unused dependencies.
@@ -109,11 +114,11 @@ jobs:
             ~/.cargo/registry/CACHEDIR.TAG
             ~/.cargo/git
             target
-          key: tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-nightly-${{ hashFiles('**/Cargo.lock') }}-small
+          key: tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable-${{ hashFiles('**/Cargo.lock') }}-small
           restore-keys: |
-            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-nightly-${{ hashFiles('**/Cargo.lock') }}-small
-            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-nightly-${{ hashFiles('**/Cargo.lock') }}
-            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-nightly
+            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable-${{ hashFiles('**/Cargo.lock') }}-small
+            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable-${{ hashFiles('**/Cargo.lock') }}
+            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable
       - name: cargo machete
         run: |
           cargo install cargo-machete
@@ -153,8 +158,6 @@ jobs:
             tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable-${{ hashFiles('**/Cargo.lock') }}
             tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable
             tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}
-      - name: rust-toolchain.toml override by removing
-        run: rm -f rust-toolchain.toml
       - name: toolchain
         uses: dtolnay/rust-toolchain@stable
         with:
@@ -184,7 +187,7 @@ jobs:
 
   licenses:
     name: file licenses
-    runs-on: [ubuntu-20.04]
+    runs-on: [ubuntu-latest]
     steps:
       - name: checkout
         uses: actions/checkout@v4
@@ -228,7 +231,7 @@ jobs:
       - name: Cache cargo files and outputs
         if: startsWith(runner.environment,'github-hosted')
         uses: Swatinem/rust-cache@v2
-      - name: caching (nightly)
+      - name: caching (stable)
         if: startsWith(runner.environment,'self-hosted')
         # Don't use rust-cache.
         # Rust-cache disables a key feature of actions/cache: restoreKeys.
@@ -243,11 +246,11 @@ jobs:
             ~/.cargo/registry/CACHEDIR.TAG
             ~/.cargo/git
             target
-          key: tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-nightly-${{ hashFiles('**/Cargo.lock') }}-${{ matrix.tari_target_network.target }}
+          key: tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable-${{ hashFiles('**/Cargo.lock') }}-${{ matrix.tari_target_network.target }}
           restore-keys: |
-            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-nightly-${{ hashFiles('**/Cargo.lock') }}-${{ matrix.tari_target_network.network }}
-            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-nightly-${{ hashFiles('**/Cargo.lock') }}
-            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-nightly
+            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable-${{ hashFiles('**/Cargo.lock') }}-${{ matrix.tari_target_network.network }}
+            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable-${{ hashFiles('**/Cargo.lock') }}
+            tari-${{ runner.os }}-${{ runner.cpu-model }}-${{ env.toolchain }}-stable
       - name: Install cargo-nextest
         run: cargo install cargo-nextest --locked --force
       - name: cargo test compile