diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8e2e2ea7ef..ec466f2fa1 100755
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -42,15 +42,20 @@ commands:
       - run:
           name: Install Rust
           command: |
-            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
-            source "$HOME/.cargo/env"
-            rustup install 1.82.0
-            rustup override set 1.82.0
-            cargo --version --verbose
-            rustc --version
+            # If Rust is not installed on the machine, install it
+            if ! command -v rustc &> /dev/null; then
+              curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+              source "$HOME/.cargo/env"
+              rustup install 1.82.0
+              rustup override set 1.82.0
+              cargo --version --verbose
+              rustc --version
+            fi
             if [ ! -f "Cargo.lock" ]; then
               cargo generate-lockfile
             fi
+            cargo install cargo-mtime
+            
             
 
   install-rust-windows:
@@ -71,6 +76,7 @@ commands:
             if (!(Test-Path "Cargo.lock" -PathType Leaf)) {
                 cargo generate-lockfile
             }
+            cargo install cargo-mtime
 
   build-and-test:
     description: "Build and run tests"
@@ -79,12 +85,14 @@ commands:
           name: Build
           no_output_timeout: 30m
           command: |
+            cargo-mtime . ~/.cache/mtimes/project.db
             cargo test --no-run --all --locked --profile ci --features only_testnet
       - run:
           name: Run tests
           no_output_timeout: 30m
           # The `--verbose` flag is used to check which files are being recompiled. Ideally, this should be none.
           command: |
+            cargo-mtime . ~/.cache/mtimes/project.db
             cargo test --all --locked --profile ci --features only_testnet --verbose
 
   install_rust_nightly:
@@ -144,6 +152,7 @@ jobs:
             - cargo-v1-{{ arch }}-{{ checksum "Cargo.toml" }}-{{ checksum "Cargo.lock" }}
             - cargo-v1-{{ arch }}-{{ checksum "Cargo.toml" }}
             - cargo-v1-{{ arch }}
+      - install-rust
       - run:
             name: Update Submodules
             command: git submodule update --init --recursive
diff --git a/.circleci/leo-example.sh b/.circleci/leo-example.sh
index 2e794f8121..8fbce490c0 100755
--- a/.circleci/leo-example.sh
+++ b/.circleci/leo-example.sh
@@ -1,3 +1,9 @@
+# Alias the leo command to use the local binary.
+# Note: Use a full path for $LEO when running locally.
+leo() {
+  $LEO "$@"
+}
+
 (
   # Create a new Leo lottery example program.
   $LEO example lottery || exit
diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 1e31031cbb..4a2ae1f647 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -55,7 +55,7 @@ jobs:
           make install DESTDIR=../../kcov-build
           cd ../..
           rm -rf kcov-master
-          for file in target/debug/deps/*-*; do if [[ "$file" != *\.* ]]; then mkdir -p "target/cov/$(basename $file)"; ./kcov-build/usr/local/bin/kcov --exclude-pattern=/.cargo,/usr/lib --exclude-region='@kcov_skip(start):@kcov_skip(end)' --verify "target/cov/$(basename $file)" "$file"; fi done
+          for file in target/ci/deps/*-*; do if [[ "$file" != *\.* ]]; then mkdir -p "target/cov/$(basename $file)"; ./kcov-build/usr/local/bin/kcov --exclude-pattern=/.cargo,/usr/lib --exclude-region='@kcov_skip(start):@kcov_skip(end)' --verify "target/cov/$(basename $file)" "$file"; fi done
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
diff --git a/build.rs b/build.rs
index 5420a093a7..c374d98662 100644
--- a/build.rs
+++ b/build.rs
@@ -71,8 +71,24 @@ fn check_file_licenses<P: AsRef<Path>>(path: P) {
         }
     }
 
-    // Re-run upon any changes to the workspace.
-    println!("cargo:rerun-if-changed=.");
+    // Watch the directories that contain Rust source files
+    println!("cargo:rerun-if-changed=compiler");
+    println!("cargo:rerun-if-changed=errors");
+    println!("cargo:rerun-if-changed=leo");
+    println!("cargo:rerun-if-changed=tests/test-framework");
+    println!("cargo:rerun-if-changed=utils");
+
+    // Watch the build script itself
+    println!("cargo:rerun-if-changed=build.rs");
+
+    // Watch the license header file
+    println!("cargo:rerun-if-changed=.resources/license_header");
+
+    // Watch the Cargo.toml file
+    println!("cargo:rerun-if-changed=Cargo.toml");
+
+    // Watch the Cargo.lock file
+    println!("cargo:rerun-if-changed=Cargo.lock");
 }
 
 // The build script; it currently only checks the licenses.
diff --git a/examples b/examples
index b75bb77851..155f8410fb 160000
--- a/examples
+++ b/examples
@@ -1 +1 @@
-Subproject commit b75bb77851667f6ece0af4cacfc27715aa7186aa
+Subproject commit 155f8410fb199c971b50950882a74ff593f8f5d9