ci: Test for unused dependencies

src/jailer/Cargo.toml

@@ -14,7 +14,6 @@ bench = false
 [dependencies]
 libc = "0.2.168"
 log-instrument = { path = "../log-instrument", optional = true }
-nix = { version = "0.29.0", default-features = false, features = ["dir"] }
 regex = { version = "1.11.1", default-features = false, features = ["std"] }
 thiserror = "2.0.6"
 vmm-sys-util = "0.12.1"

src/utils/Cargo.toml

@@ -9,17 +9,10 @@ license = "Apache-2.0"
 bench = false
 
 [dependencies]
-derive_more = { version = "1.0.0", default-features = false, features = ["from"] }
 displaydoc = "0.2.5"
 libc = "0.2.168"
 log-instrument = { path = "../log-instrument", optional = true }
-serde = { version = "1.0.215", features = ["derive"] }
 thiserror = "2.0.6"
-vm-memory = { version = "0.16.1", features = ["backend-mmap", "backend-bitmap"] }
-vmm-sys-util = "0.12.1"
-
-[dev-dependencies]
-serde_json = "1.0.133"
 
 [features]
 tracing = ["log-instrument"]

src/vmm/Cargo.toml

@@ -24,7 +24,6 @@ gdbstub = { version = "0.7.3", optional = true }
 gdbstub_arch = { version = "0.3.1", optional = true }
 kvm-bindings = { version = "0.10.0", features = ["fam-wrappers", "serde"] }
 kvm-ioctls = "0.19.1"
-lazy_static = "1.5.0"
 libc = "0.2.168"
 linux-loader = "0.13.0"
 log = { version = "0.4.22", features = ["std", "serde"] }

tests/host_tools/cargo_build.py

@@ -14,18 +14,27 @@
 DEFAULT_TARGET_DIR = f"{DEFAULT_TARGET}/release/"
 
 
+def nightly_toolchain() -> str:
+    """Receives the name of the installed nightly toolchain"""
+    return utils.check_output("rustup toolchain list | grep nightly").stdout.strip()
+
+
 def cargo(
     subcommand,
     cargo_args: str = "",
     subcommand_args: str = "",
     *,
     env: dict = None,
     cwd: str = None,
+    nightly: bool = False,
 ):
     """Executes the specified cargo subcommand"""
+    toolchain = f"+{nightly_toolchain()}" if nightly else ""
     env = env or {}
     env_string = " ".join(f'{key}="{str(value)}"' for key, value in env.items())
-    cmd = f"{env_string} cargo {subcommand} {cargo_args} -- {subcommand_args}"
+    cmd = (
+        f"{env_string} cargo {toolchain} {subcommand} {cargo_args} -- {subcommand_args}"
+    )
     return utils.check_output(cmd, cwd=cwd)
 
 

tests/integration_tests/build/test_dependencies.py

@@ -0,0 +1,12 @@
+# Copyright 2024 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+"""Enforces controls over dependencies."""
+
+from host_tools.cargo_build import cargo
+
+
+def test_unused_dependencies():
+    """
+    Test that there are no unused dependencies.
+    """
+    cargo("udeps", "--all", nightly=True)