1 files changed, 12 insertions, 6 deletions

diff --git a/src/collection/guard.rs b/src/collection/guard.rs
index ab66ffe..a9bf66e 100755
--- a/src/collection/guard.rs
+++ b/src/collection/guard.rs
@@ -1,13 +1,13 @@
-use std::fmt::{Debug, Display};
-use std::hash::Hash;
-use std::ops::{Deref, DerefMut};
+use core::fmt::{Debug, Display};
+use core::hash::Hash;
+use core::ops::{Deref, DerefMut};
 
 use super::LockGuard;
 
 #[mutants::skip] // hashing involves RNG and is hard to test
 #[cfg(not(tarpaulin_include))]
 impl<Guard: Hash> Hash for LockGuard<Guard> {
-	fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+	fn hash<H: core::hash::Hasher>(&self, state: &mut H) {
 		self.guard.hash(state)
 	}
 }
@@ -20,13 +20,13 @@ impl<Guard: Hash> Hash for LockGuard<Guard> {
 #[mutants::skip]
 #[cfg(not(tarpaulin_include))]
 impl<Guard: Debug> Debug for LockGuard<Guard> {
-	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+	fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
 		Debug::fmt(&**self, f)
 	}
 }
 
 impl<Guard: Display> Display for LockGuard<Guard> {
-	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+	fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
 		Display::fmt(&**self, f)
 	}
 }
@@ -59,10 +59,13 @@ impl<Guard> AsMut<Guard> for LockGuard<Guard> {
 
 #[cfg(test)]
 mod tests {
+	#[cfg(feature = "std")]
 	use crate::collection::OwnedLockCollection;
+	#[cfg(feature = "std")]
 	use crate::{LockCollection, Mutex, RwLock, ThreadKey};
 
 	#[test]
+	#[cfg(feature = "std")]
 	fn guard_display_works() {
 		let key = ThreadKey::get().unwrap();
 		let lock = OwnedLockCollection::new(RwLock::new("Hello, world!"));
@@ -71,6 +74,7 @@ mod tests {
 	}
 
 	#[test]
+	#[cfg(feature = "std")]
 	fn deref_mut_works() {
 		let key = ThreadKey::get().unwrap();
 		let locks = (Mutex::new(1), Mutex::new(2));
@@ -88,6 +92,7 @@ mod tests {
 	}
 
 	#[test]
+	#[cfg(feature = "std")]
 	fn as_ref_works() {
 		let key = ThreadKey::get().unwrap();
 		let locks = (Mutex::new(1), Mutex::new(2));
@@ -105,6 +110,7 @@ mod tests {
 	}
 
 	#[test]
+	#[cfg(feature = "std")]
 	fn as_mut_works() {
 		let key = ThreadKey::get().unwrap();
 		let locks = (Mutex::new(1), Mutex::new(2));