fix: replace let _ with explicit drop for Command output

Clippy was reporting a non-binding let on a type that has a destructor.
Using explicit drop() makes the intention clear and resolves the lint.

Author: josecelano

.gitignore

@@ -51,5 +51,8 @@ Thumbs.db
 target/
 Cargo.lock
 
+# Meson build directory
+builddir/
+
 # Coverage reports
 .coverage/

README.md

@@ -93,6 +93,20 @@ cargo install --path .
 torrust-testing-infra
 ```
 
+#### Development Tasks
+
+This project uses [Meson](https://mesonbuild.com/) as a task runner for common development commands:
+
+```bash
+# Setup Meson (one-time setup)
+meson setup builddir
+
+# Run comprehensive clippy linting
+meson compile -C builddir clippy
+```
+
+**[📖 See full Meson setup guide →](docs/meson.md)**
+
 #### Running E2E Tests
 
 Use the E2E tests binary to run automated infrastructure tests:

docs/meson.md

@@ -0,0 +1,66 @@
+# Meson Task Runner Setup
+
+This project uses [Meson](https://mesonbuild.com/) as a task runner to wrap common development commands and make them easier to execute.
+
+## Prerequisites
+
+Make sure you have Meson installed:
+
+```bash
+# On Ubuntu/Debian
+sudo apt install meson
+
+# On other systems, check: https://mesonbuild.com/Getting-meson.html
+```
+
+## Setup
+
+1. Initialize the Meson build directory (only needed once):
+
+```bash
+meson setup builddir
+```
+
+This creates a `builddir/` directory with the Meson configuration.
+
+## Available Commands
+
+### Clippy Linter
+
+Run the comprehensive Clippy linter with all lint categories enabled:
+
+```bash
+meson compile -C builddir clippy
+```
+
+This is equivalent to running:
+
+```bash
+CARGO_INCREMENTAL=0 cargo clippy --no-deps --tests --benches --examples --workspace --all-targets --all-features -- -D clippy::correctness -D clippy::suspicious -D clippy::complexity -D clippy::perf -D clippy::style -D clippy::pedantic
+```
+
+## Why Use Meson?
+
+- **Shorter commands**: Instead of typing long cargo commands, use simple meson targets
+- **Consistent environment**: Commands run with the same environment variables every time
+- **Easy to extend**: Add new targets to `meson.build` as needed
+- **IDE integration**: Many IDEs can integrate with Meson build systems
+
+## Adding More Commands
+
+To add more commands, edit the `meson.build` file and add new `run_target()` definitions. After modifying the file, you may need to reconfigure:
+
+```bash
+meson setup builddir --reconfigure
+```
+
+## Directory Structure
+
+```text
+project-root/
+├── meson.build         # Meson configuration with task definitions
+├── builddir/           # Meson build directory (auto-generated)
+└── ...                 # Your project files
+```
+
+The `builddir/` directory is automatically generated and can be safely deleted and recreated.

meson.build

@@ -0,0 +1,25 @@
+project('torrust-testing-infra', 'rust',
+  version : '0.1.0',
+  default_options : ['warning_level=3'])
+
+# Clippy linter with comprehensive checks
+run_target('clippy',
+  command : [
+    'env',
+    'CARGO_INCREMENTAL=0',
+    'cargo', 'clippy',
+    '--no-deps',
+    '--tests',
+    '--benches', 
+    '--examples',
+    '--workspace',
+    '--all-targets',
+    '--all-features',
+    '--',
+    '-D', 'clippy::correctness',
+    '-D', 'clippy::suspicious', 
+    '-D', 'clippy::complexity',
+    '-D', 'clippy::perf',
+    '-D', 'clippy::style',
+    '-D', 'clippy::pedantic'
+  ])

src/bin/e2e_tests.rs

@@ -364,10 +364,12 @@ impl Drop for TestEnvironment {
         if !self.keep_env {
             // Try basic cleanup in case async cleanup failed
             let tofu_dir = self.project_root.join("config/tofu/lxd");
-            drop(Command::new("tofu")
-                .args(["destroy", "-auto-approve"])
-                .current_dir(&tofu_dir)
-                .output());
+            drop(
+                Command::new("tofu")
+                    .args(["destroy", "-auto-approve"])
+                    .current_dir(&tofu_dir)
+                    .output(),
+            );
         }
     }
 }