From c881fa706218558810f44e5652f886203e5f2942 Mon Sep 17 00:00:00 2001
From: Ludvig Liljenberg <4257730+ludfjig@users.noreply.github.com>
Date: Fri, 23 Oct 2026 10:38:34 -0700
Subject: [PATCH 1/3] Remove the print_debug feature and debug! macro

print_debug made the exported debug! macro also print to stdout in
debug builds. tracing::debug! already emits the same message. The
macro's cfg is evaluated in the caller's crate, so it never printed
for external users.

Signed-off-by: Ludvig Liljenberg <4257730+ludfjig@users.noreply.github.com>
---
 CHANGELOG.md                                     |  1 +
 Justfile                                         |  1 -
 src/hyperlight_host/Cargo.toml                   |  2 --
 src/hyperlight_host/build.rs                     |  2 --
 src/hyperlight_host/src/lib.rs                   | 11 -----------
 src/hyperlight_host/src/sandbox/trace/context.rs |  2 +-
 src/hyperlight_host/src/sandbox/uninitialized.rs |  2 +-
 7 files changed, 3 insertions(+), 18 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b2cbb54ef..4a1816922 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 * **Breaking:** Generated libc bindings use `usize` for `size_t` arguments and return values, including `strlen` and `memcpy`. Rust callers that use `u64` or `c_ulong` need explicit conversions. The C ABI is unchanged.
 
 ### Removed
+* **Breaking:** The `print_debug` cargo feature and the exported `hyperlight_host::debug!` macro. Use `tracing::debug!` with a subscriber.
 
 ### Fixed
 
diff --git a/Justfile b/Justfile
index fbb2b83ce..b615534b3 100644
--- a/Justfile
+++ b/Justfile
@@ -375,7 +375,6 @@ miri-tests: (ensure-cargo-nextest) (ensure-nightly-miri)
 check:
     {{ cargo-cmd }} check  {{ target-triple-flag }}
     {{ cargo-cmd }} check -p hyperlight-host --features crashdump  {{ target-triple-flag }}
-    {{ cargo-cmd }} check -p hyperlight-host --features print_debug  {{ target-triple-flag }}
     {{ cargo-cmd }} check -p hyperlight-host --features gdb  {{ target-triple-flag }}
     {{ cargo-cmd }} check -p hyperlight-host --features trace_guest,mem_profile  {{ target-triple-flag }}
     {{ cargo-cmd }} check -p hyperlight-host --features hw-interrupts  {{ target-triple-flag }}
diff --git a/src/hyperlight_host/Cargo.toml b/src/hyperlight_host/Cargo.toml
index bbaa1663f..e901ffebe 100644
--- a/src/hyperlight_host/Cargo.toml
+++ b/src/hyperlight_host/Cargo.toml
@@ -130,8 +130,6 @@ cc = "1.2"
 default = ["kvm", "mshv3", "hvf", "build-metadata"]
 function_call_metrics = []
 executable_heap = []
-# This feature enables printing of debug information to stdout in debug builds
-print_debug = []
 # Dumps the VM state to a file on unexpected errors or crashes. The path of the file will be printed on stdout and logged.
 crashdump = ["dep:chrono", "dep:elfcore"]
 trace_guest = ["dep:opentelemetry", "dep:tracing-opentelemetry", "dep:hyperlight-guest-tracing", "hyperlight-common/trace_guest"]
diff --git a/src/hyperlight_host/build.rs b/src/hyperlight_host/build.rs
index 6326b429d..ec9b1c041 100644
--- a/src/hyperlight_host/build.rs
+++ b/src/hyperlight_host/build.rs
@@ -155,8 +155,6 @@ fn main() -> Result<()> {
         mshv3: { all(feature = "mshv3", target_os = "linux") },
         hvf: { all(feature = "hvf", target_os = "macos") },
         crashdump: { all(feature = "crashdump", target_arch = "x86_64") },
-        // print_debug feature is aliased with debug_assertions to make it only available in debug-builds.
-        print_debug: { all(feature = "print_debug", debug_assertions) },
         // the gdb feature (only temporarily!) needs to use
         // writable/un-shared snapshot memories.
         unshared_snapshot_mem: { gdb },
diff --git a/src/hyperlight_host/src/lib.rs b/src/hyperlight_host/src/lib.rs
index afd9ade1f..b920b9961 100644
--- a/src/hyperlight_host/src/lib.rs
+++ b/src/hyperlight_host/src/lib.rs
@@ -136,17 +136,6 @@ macro_rules! log_then_return {
     };
 }
 
-/// Same as tracing::debug!, but will additionally print to stdout if the print_debug feature is enabled
-#[macro_export]
-macro_rules! debug {
-    ($($arg:tt)+) =>
-    {
-        #[cfg(print_debug)]
-        println!($($arg)+);
-        tracing::debug!($($arg)+);
-    }
-}
-
 // LOG_ONCE is used to log information about the crate version once
 #[cfg(feature = "build-metadata")]
 static LOG_ONCE: Once = Once::new();
diff --git a/src/hyperlight_host/src/sandbox/trace/context.rs b/src/hyperlight_host/src/sandbox/trace/context.rs
index e6eb677c6..bbd164a36 100644
--- a/src/hyperlight_host/src/sandbox/trace/context.rs
+++ b/src/hyperlight_host/src/sandbox/trace/context.rs
@@ -347,7 +347,7 @@ impl TraceContext {
 
     pub(crate) fn setup_guest_trace(&mut self, ctx: Context) {
         if self.start_instant.is_none() {
-            crate::debug!("Guest Start Epoch set");
+            tracing::debug!("Guest Start Epoch set");
             self.start_wall = Some(SystemTime::now());
             self.start_tsc = Some(hyperlight_guest_tracing::invariant_tsc::read_tsc());
             self.start_instant = Some(std::time::Instant::now());
diff --git a/src/hyperlight_host/src/sandbox/uninitialized.rs b/src/hyperlight_host/src/sandbox/uninitialized.rs
index bf6e3198b..83b2163dc 100644
--- a/src/hyperlight_host/src/sandbox/uninitialized.rs
+++ b/src/hyperlight_host/src/sandbox/uninitialized.rs
@@ -165,7 +165,7 @@ impl UninitializedSandbox {
             pending_file_mappings: Vec::new(),
         };
 
-        crate::debug!("Sandbox created:  {:#?}", sandbox);
+        tracing::debug!("Sandbox created:  {:#?}", sandbox);
 
         Ok(sandbox)
     }

From 90871c6fb8aa91984822a5d8e30b3a3b5f74b5b6 Mon Sep 17 00:00:00 2001
From: Ludvig Liljenberg <4257730+ludfjig@users.noreply.github.com>
Date: Fri, 23 Oct 2026 10:38:55 -0700
Subject: [PATCH 2/3] Remove the build-metadata feature

build-metadata used built with git2 to log build details on the
first sandbox creation. Its git fields were empty for crates.io users.

Dropping git2, which builds libgit2 from C, speeds up a clean debug
build of hyperlight-host with default features on 8 cores. Wall time
drops 35%, from 65.6 s to 42.5 s. CPU time drops 34%, from 319 s to
209 s. The build compiles 11 fewer crates, and the target directory
shrinks 7%, from 847 MB to 788 MB.

Signed-off-by: Ludvig Liljenberg <4257730+ludfjig@users.noreply.github.com>
---
 CHANGELOG.md                                  |  1 +
 Cargo.lock                                    | 53 ----------------
 Justfile                                      |  8 +--
 docs/how-to-run-coverage.md                   |  4 +-
 src/hyperlight_host/Cargo.toml                |  4 +-
 src/hyperlight_host/build.rs                  |  5 --
 src/hyperlight_host/src/lib.rs                | 63 -------------------
 .../src/sandbox/uninitialized.rs              |  7 ---
 8 files changed, 8 insertions(+), 137 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a1816922..af762a1f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ### Removed
 * **Breaking:** The `print_debug` cargo feature and the exported `hyperlight_host::debug!` macro. Use `tracing::debug!` with a subscriber.
+* **Breaking:** The `build-metadata` cargo feature. A library should not log build details, and for crates.io users its git fields were always empty. Applications can log build details with their own tooling.
 
 ### Fixed
 
diff --git a/Cargo.lock b/Cargo.lock
index 5292f14c8..79d96a917 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -295,16 +295,6 @@ dependencies = [
  "spin 0.10.1",
 ]
 
-[[package]]
-name = "built"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c0e531d93d39c34eef561e929e8a7f86d77a5af08aac4f6d6e39976c51858e9"
-dependencies = [
- "chrono",
- "git2",
-]
-
 [[package]]
 name = "bumpalo"
 version = "3.20.3"
@@ -1382,18 +1372,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "git2"
-version = "0.21.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ddddbf932745a6be37109b6112d3ee09696106f848449069d3a57bba937ab82e"
-dependencies = [
- "bitflags 2.13.2",
- "libc",
- "libgit2-sys",
- "log",
-]
-
 [[package]]
 name = "glib"
 version = "0.22.9"
@@ -1786,7 +1764,6 @@ dependencies = [
  "bindgen",
  "bitflags 2.13.2",
  "blake3",
- "built",
  "bytemuck",
  "cc",
  "cfg-if",
@@ -2254,18 +2231,6 @@ dependencies = [
  "cc",
 ]
 
-[[package]]
-name = "libgit2-sys"
-version = "0.18.8+1.9.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f7c568b25d7489bc3fb2988ed69ab111d2944d2f5fec3d5c987fe545ea97b50"
-dependencies = [
- "cc",
- "libc",
- "libz-sys",
- "pkg-config",
-]
-
 [[package]]
 name = "libloading"
 version = "0.8.9"
@@ -2308,18 +2273,6 @@ dependencies = [
  "escape8259",
 ]
 
-[[package]]
-name = "libz-sys"
-version = "1.1.29"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85bc9657773828b90eeb625adff10eeac83cc21bbfd8e23a03eaa8a33c9e28d9"
-dependencies = [
- "cc",
- "libc",
- "pkg-config",
- "vcpkg",
-]
-
 [[package]]
 name = "linkme"
 version = "0.3.37"
@@ -4383,12 +4336,6 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
 
-[[package]]
-name = "vcpkg"
-version = "0.2.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
-
 [[package]]
 name = "version-compare"
 version = "0.2.1"
diff --git a/Justfile b/Justfile
index b615534b3..72e7917ff 100644
--- a/Justfile
+++ b/Justfile
@@ -112,8 +112,8 @@ test-like-ci config=default-target hypervisor="kvm":
     @# with default features
     just test {{config}}
 
-    @# with only one driver enabled + build-metadata
-    just test {{config}} build-metadata,{{ if hypervisor == "mshv3" {"mshv3"} else {"kvm"} }}
+    @# with only one driver enabled
+    just test {{config}} {{ if hypervisor == "mshv3" {"mshv3"} else {"kvm"} }}
 
     @# with hw-interrupts enabled (+ explicit driver on Linux)
     {{ if os() == "linux" { if hypervisor == "mshv3" { "just test " + config + " mshv3,hw-interrupts" } else { "just test " + config + " kvm,hw-interrupts" } } else { "just test " + config + " hw-interrupts" } }}
@@ -586,8 +586,8 @@ coverage-run hypervisor="kvm": ensure-cargo-llvm-cov
     # tests with default features (all drivers; skip stress tests — too slow under instrumentation)
     cargo +{{nightly-toolchain}} test {{ coverage-packages }} --tests -- --skip stress_test
 
-    # tests with single driver + build-metadata
-    cargo +{{nightly-toolchain}} test {{ coverage-packages }} --no-default-features --features build-metadata,{{ if hypervisor == "mshv3" { "mshv3" } else { "kvm" } }} --tests -- --skip stress_test
+    # tests with single driver
+    cargo +{{nightly-toolchain}} test {{ coverage-packages }} --no-default-features --features {{ if hypervisor == "mshv3" { "mshv3" } else { "kvm" } }} --tests -- --skip stress_test
 
     # isolated tests (require running separately due to global state)
     cargo +{{nightly-toolchain}} test -p hyperlight-host --lib -- sandbox::uninitialized::tests::test_log_trace --exact --ignored
diff --git a/docs/how-to-run-coverage.md b/docs/how-to-run-coverage.md
index 7d2b41038..31b3072f4 100644
--- a/docs/how-to-run-coverage.md
+++ b/docs/how-to-run-coverage.md
@@ -98,8 +98,8 @@ We use [cargo-llvm-cov](https://github.com/taiki-e/cargo-llvm-cov) over alternat
 
 The `coverage-run` recipe mirrors the `test-like-ci` + `run-examples-like-ci` workflows by running all test phases and examples with different feature combinations:
 
-1. **Default features** — all drivers enabled (kvm + mshv3 + build-metadata)
-2. **Single driver** — only one hypervisor driver + build-metadata
+1. **Default features** — all drivers enabled (kvm + mshv3)
+2. **Single driver** — only one hypervisor driver
 3. **Isolated tests** — tests that require running separately due to global state
 4. **Integration tests** — including `executable_heap` feature
 5. **Crashdump** — tests + example with the `crashdump` feature enabled
diff --git a/src/hyperlight_host/Cargo.toml b/src/hyperlight_host/Cargo.toml
index e901ffebe..db6a80655 100644
--- a/src/hyperlight_host/Cargo.toml
+++ b/src/hyperlight_host/Cargo.toml
@@ -122,12 +122,11 @@ proc-maps = "0.5.0"
 [build-dependencies]
 anyhow = { version = "1.0.102" }
 cfg_aliases = "0.2.1"
-built = { version = "0.8.1", optional = true, features = ["chrono", "git2"] }
 bindgen = { version = "0.72", features = ["prettyplease"] }
 cc = "1.2"
 
 [features]
-default = ["kvm", "mshv3", "hvf", "build-metadata"]
+default = ["kvm", "mshv3", "hvf"]
 function_call_metrics = []
 executable_heap = []
 # Dumps the VM state to a file on unexpected errors or crashes. The path of the file will be printed on stdout and logged.
@@ -141,7 +140,6 @@ hw-interrupts = []
 # This enables easy debug in the guest
 gdb = ["dep:gdbstub", "dep:gdbstub_arch"]
 fuzzing = ["hyperlight-common/fuzzing"]
-build-metadata = ["dep:built"]
 
 [[bench]]
 name = "benchmarks"
diff --git a/src/hyperlight_host/build.rs b/src/hyperlight_host/build.rs
index ec9b1c041..41c9b1908 100644
--- a/src/hyperlight_host/build.rs
+++ b/src/hyperlight_host/build.rs
@@ -2,8 +2,6 @@
 // Copyright 2025 The Hyperlight Authors.
 
 use anyhow::{Context, Result};
-#[cfg(feature = "build-metadata")]
-use built::write_built_file;
 
 fn main() -> Result<()> {
     // re-run the build if this script is changed (or deleted!),
@@ -174,8 +172,5 @@ fn main() -> Result<()> {
         readable_shared_mem: { any(gdb, all(feature = "mem_profile", not(unshared_snapshot_mem))) },
     }
 
-    #[cfg(feature = "build-metadata")]
-    write_built_file()?;
-
     Ok(())
 }
diff --git a/src/hyperlight_host/src/lib.rs b/src/hyperlight_host/src/lib.rs
index b920b9961..1bbe61ed8 100644
--- a/src/hyperlight_host/src/lib.rs
+++ b/src/hyperlight_host/src/lib.rs
@@ -26,16 +26,6 @@
 #![cfg_attr(not(any(test, debug_assertions)), warn(clippy::expect_used))]
 #![cfg_attr(not(any(test, debug_assertions)), warn(clippy::unwrap_used))]
 
-#[cfg(feature = "build-metadata")]
-use std::sync::Once;
-
-#[cfg(feature = "build-metadata")]
-/// The `built` crate is used to generate a `built.rs` file that contains
-/// information about the build environment. This information is used to
-/// populate the `built_info` module, which is re-exported here.
-pub(crate) mod built_info {
-    include!(concat!(env!("OUT_DIR"), "/built.rs"));
-}
 /// Dealing with errors, including errors across VM boundaries
 pub mod error;
 /// Wrappers for host and guest functions.
@@ -135,56 +125,3 @@ macro_rules! log_then_return {
            return Err(__err);
     };
 }
-
-// LOG_ONCE is used to log information about the crate version once
-#[cfg(feature = "build-metadata")]
-static LOG_ONCE: Once = Once::new();
-
-#[cfg(feature = "build-metadata")]
-pub(crate) fn log_build_details() {
-    use tracing::info;
-    LOG_ONCE.call_once(|| {
-        info!("Package name: {}", built_info::PKG_NAME);
-        info!("Package version: {}", built_info::PKG_VERSION);
-        info!("Package features: {:?}", built_info::FEATURES);
-        info!("Target triple: {}", built_info::TARGET);
-        info!("Optimization level: {}", built_info::OPT_LEVEL);
-        info!("Profile: {}", built_info::PROFILE);
-        info!("Debug: {}", built_info::DEBUG);
-        info!("Rustc: {}", built_info::RUSTC);
-        info!("Built at: {}", built_info::BUILT_TIME_UTC);
-        match built_info::CI_PLATFORM.unwrap_or("") {
-            "" => info!("Not built on  a CI platform"),
-            other => info!("Built on : {}", other),
-        }
-        match built_info::GIT_COMMIT_HASH.unwrap_or("") {
-            "" => info!("No git commit hash found"),
-            other => info!("Git commit hash: {}", other),
-        }
-
-        let git = match built_info::GIT_HEAD_REF.unwrap_or("") {
-            "" => {
-                info!("No git head ref found");
-                false
-            }
-            other => {
-                info!("Git head ref: {}", other);
-                true
-            }
-        };
-        match built_info::GIT_VERSION.unwrap_or("") {
-            "" => info!("No git version found"),
-            other => info!("Git version: {}", other),
-        }
-        match built_info::GIT_DIRTY.unwrap_or(false) {
-            true => info!("Repo had uncommitted changes"),
-            false => {
-                if git {
-                    info!("Repo had no uncommitted changes")
-                } else {
-                    info!("No git repo found")
-                }
-            }
-        }
-    });
-}
diff --git a/src/hyperlight_host/src/sandbox/uninitialized.rs b/src/hyperlight_host/src/sandbox/uninitialized.rs
index 83b2163dc..07051e083 100644
--- a/src/hyperlight_host/src/sandbox/uninitialized.rs
+++ b/src/hyperlight_host/src/sandbox/uninitialized.rs
@@ -14,8 +14,6 @@ use super::snapshot::Snapshot;
 use super::uninitialized_evolve::initialize_sandbox;
 use crate::func::host_functions::{HostFunction, register_host_function};
 use crate::func::{ParameterTuple, SupportedReturnType};
-#[cfg(feature = "build-metadata")]
-use crate::log_build_details;
 use crate::mem::memory_region::{DEFAULT_GUEST_BLOB_MEM_FLAGS, MemoryRegionFlags};
 use crate::mem::mgr::SandboxMemoryManager;
 use crate::mem::shared_mem::{ExclusiveSharedMemory, SharedMemory};
@@ -142,9 +140,6 @@ impl UninitializedSandbox {
     //
     // This is ok for now as this is not a public function
     fn from_snapshot(snapshot: Arc<Snapshot>, cfg: Option<SandboxConfiguration>) -> Result<Self> {
-        #[cfg(feature = "build-metadata")]
-        log_build_details();
-
         // hyperlight is only supported on Windows 11 and Windows Server 2022 and later
         #[cfg(target_os = "windows")]
         check_windows_version()?;
@@ -794,7 +789,6 @@ mod tests {
     ///    our subscriber's `Interest::sometimes()`
     /// 3. Clear recorded state and run the real test
     #[test]
-    #[cfg(feature = "build-metadata")]
     fn test_trace_trace() {
         use hyperlight_testing::tracing_subscriber::TracingSubscriber;
         use tracing::Level;
@@ -905,7 +899,6 @@ mod tests {
     #[ignore]
     // Tests that traces are emitted as log records when there is no trace
     // subscriber configured.
-    #[cfg(feature = "build-metadata")]
     fn test_log_trace() {
         use std::path::PathBuf;
 

From 7a74694c5e9d9bd3004906e9c7f18c8e5879798b Mon Sep 17 00:00:00 2001
From: Ludvig Liljenberg <4257730+ludfjig@users.noreply.github.com>
Date: Fri, 23 Oct 2026 10:39:06 -0700
Subject: [PATCH 3/3] Remove redundant and stale cargo feature entries

* Enabling std on hyperlight-common no longer pulls in tracing.
* Feature lists name only the crates each package uses directly.
* Drop the empty hyperlight-libc features table and stale feature
  names from the clippy script.

Signed-off-by: Ludvig Liljenberg <4257730+ludfjig@users.noreply.github.com>
---
 hack/clippy-package-features.sh              | 2 +-
 src/hyperlight_common/Cargo.toml             | 2 +-
 src/hyperlight_guest_bin/Cargo.toml          | 2 +-
 src/hyperlight_libc/Cargo.toml               | 3 ---
 src/tests/rust_guests/dummyguest/Cargo.toml  | 2 +-
 src/tests/rust_guests/simpleguest/Cargo.toml | 4 ++--
 src/tests/rust_guests/witguest/Cargo.toml    | 4 ++--
 7 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/hack/clippy-package-features.sh b/hack/clippy-package-features.sh
index 49b6716b8..fc0b1b014 100755
--- a/hack/clippy-package-features.sh
+++ b/hack/clippy-package-features.sh
@@ -37,7 +37,7 @@ fi
 EXCLUDED_FEATURES=("${REQUIRED_FEATURES[@]}")
 
 if [[ -n "${TARGET_TRIPLE}" && "$TARGET_TRIPLE" =~ aarch64 ]] || [[ -z "${TARGET_TRIPLE}" && "$(uname -m)" = "aarch64" ]]; then
-    EXCLUDED_FEATURES+=("crashdump" "trace_guest" "mem_profile" "hw-interrupts" "gdb" "i686-guest" "nanvix-unstable")
+    EXCLUDED_FEATURES+=("crashdump" "trace_guest" "mem_profile" "hw-interrupts" "gdb")
 fi
 
 # Get all features for the package (excluding default and required features)
diff --git a/src/hyperlight_common/Cargo.toml b/src/hyperlight_common/Cargo.toml
index 3ea678ecf..975b10206 100644
--- a/src/hyperlight_common/Cargo.toml
+++ b/src/hyperlight_common/Cargo.toml
@@ -35,7 +35,7 @@ tracing = ["dep:tracing"]
 fuzzing = ["dep:arbitrary"]
 trace_guest = []
 mem_profile = []
-std = ["thiserror/std", "log/std", "tracing/std"]
+std = ["thiserror/std", "log/std", "tracing?/std"]
 
 [dev-dependencies]
 criterion = "0.8.1"
diff --git a/src/hyperlight_guest_bin/Cargo.toml b/src/hyperlight_guest_bin/Cargo.toml
index 6c6f86efe..f1af7f3e6 100644
--- a/src/hyperlight_guest_bin/Cargo.toml
+++ b/src/hyperlight_guest_bin/Cargo.toml
@@ -15,7 +15,7 @@ and third-party code used by our C-API needed to build a native hyperlight-guest
 [features]
 default = ["libc", "macros"]
 libc = ["dep:hyperlight-libc"] # compile libc from picolibc
-trace_guest = ["hyperlight-common/trace_guest", "hyperlight-guest/trace_guest", "hyperlight-guest-tracing/trace"]
+trace_guest = ["hyperlight-guest/trace_guest", "hyperlight-guest-tracing/trace"]
 mem_profile = ["hyperlight-common/mem_profile"]
 macros = ["dep:hyperlight-guest-macro", "dep:linkme"]
 
diff --git a/src/hyperlight_libc/Cargo.toml b/src/hyperlight_libc/Cargo.toml
index 405082008..a28784f64 100644
--- a/src/hyperlight_libc/Cargo.toml
+++ b/src/hyperlight_libc/Cargo.toml
@@ -13,9 +13,6 @@ This crate provides picolibc for Hyperlight guests.
 It builds the picolibc library and generates bindings to the libc types and functions.
 """
 
-[features]
-default = []
-
 [dependencies]
 
 [lints]
diff --git a/src/tests/rust_guests/dummyguest/Cargo.toml b/src/tests/rust_guests/dummyguest/Cargo.toml
index 6ef29a741..fca18bf8a 100644
--- a/src/tests/rust_guests/dummyguest/Cargo.toml
+++ b/src/tests/rust_guests/dummyguest/Cargo.toml
@@ -11,4 +11,4 @@ hyperlight-common = { path = "../../../hyperlight_common", default-features = fa
 [features]
 default = []
 trace_guest = ["hyperlight-guest-bin/trace_guest"]
-mem_profile = ["hyperlight-common/mem_profile", "hyperlight-guest-bin/mem_profile"]
+mem_profile = ["hyperlight-guest-bin/mem_profile"]
diff --git a/src/tests/rust_guests/simpleguest/Cargo.toml b/src/tests/rust_guests/simpleguest/Cargo.toml
index 456d31219..d68380111 100644
--- a/src/tests/rust_guests/simpleguest/Cargo.toml
+++ b/src/tests/rust_guests/simpleguest/Cargo.toml
@@ -13,6 +13,6 @@ tracing = { version = "0.1.41", default-features = false, features = ["log", "at
 
 [features]
 default = []
-trace_guest = ["hyperlight-guest-bin/trace_guest", "hyperlight-guest/trace_guest", "hyperlight-guest-tracing/trace"]
-mem_profile = ["hyperlight-common/mem_profile", "hyperlight-guest-bin/mem_profile"]
+trace_guest = ["hyperlight-guest-bin/trace_guest"]
+mem_profile = ["hyperlight-guest-bin/mem_profile"]
 
diff --git a/src/tests/rust_guests/witguest/Cargo.toml b/src/tests/rust_guests/witguest/Cargo.toml
index d1fe28464..51b75f0f4 100644
--- a/src/tests/rust_guests/witguest/Cargo.toml
+++ b/src/tests/rust_guests/witguest/Cargo.toml
@@ -12,5 +12,5 @@ spin = "0.12.0"
 
 [features]
 default = []
-trace_guest = ["hyperlight-guest-bin/trace_guest", "hyperlight-guest/trace_guest"]
-mem_profile = ["hyperlight-common/mem_profile", "hyperlight-guest-bin/mem_profile"]
+trace_guest = ["hyperlight-guest-bin/trace_guest"]
+mem_profile = ["hyperlight-guest-bin/mem_profile"]