diff --git a/library/compiler-builtins/src/float/mod.rs b/library/compiler-builtins/src/float/mod.rs
index a82dd7d2a3b0..b0fbe8affcf7 100644
--- a/library/compiler-builtins/src/float/mod.rs
+++ b/library/compiler-builtins/src/float/mod.rs
@@ -14,6 +14,7 @@ pub mod trunc;
 
 public_test_dep! {
 /// Trait for some basic operations on floats
+#[allow(dead_code)]
 pub(crate) trait Float:
     Copy
     + core::fmt::Debug
diff --git a/library/compiler-builtins/src/int/mod.rs b/library/compiler-builtins/src/int/mod.rs
index 509f9fdae395..3ef71da8d5da 100644
--- a/library/compiler-builtins/src/int/mod.rs
+++ b/library/compiler-builtins/src/int/mod.rs
@@ -13,6 +13,7 @@ pub use self::leading_zeros::__clzsi2;
 
 public_test_dep! {
 /// Trait for some basic operations on integers
+#[allow(dead_code)]
 pub(crate) trait Int:
     Copy
     + core::fmt::Debug
diff --git a/library/compiler-builtins/testcrate/tests/cmp.rs b/library/compiler-builtins/testcrate/tests/cmp.rs
index 5c10a5601138..14dd76b2d7a7 100644
--- a/library/compiler-builtins/testcrate/tests/cmp.rs
+++ b/library/compiler-builtins/testcrate/tests/cmp.rs
@@ -1,5 +1,6 @@
 #![allow(unused_macros)]
 
+#[cfg(not(target_arch = "powerpc64"))]
 use testcrate::*;
 
 macro_rules! cmp {
diff --git a/library/compiler-builtins/testcrate/tests/conv.rs b/library/compiler-builtins/testcrate/tests/conv.rs
index 84828dbfa6c7..5cff01202a87 100644
--- a/library/compiler-builtins/testcrate/tests/conv.rs
+++ b/library/compiler-builtins/testcrate/tests/conv.rs
@@ -155,7 +155,7 @@ macro_rules! conv {
                     stringify!($fn)
                 );
             }
-        });
+        })
     };
 }
 
diff --git a/library/compiler-builtins/testcrate/tests/misc.rs b/library/compiler-builtins/testcrate/tests/misc.rs
index 402d202a82b2..cdc37e2a0d7e 100644
--- a/library/compiler-builtins/testcrate/tests/misc.rs
+++ b/library/compiler-builtins/testcrate/tests/misc.rs
@@ -1,7 +1,6 @@
 // makes configuration easier
 #![allow(unused_macros)]
 
-use compiler_builtins::float::Float;
 use testcrate::*;
 
 /// Make sure that the the edge case tester and randomized tester don't break, and list examples of
@@ -138,6 +137,7 @@ macro_rules! pow {
 #[test]
 fn float_pow() {
     use compiler_builtins::float::pow::{__powidf2, __powisf2};
+    use compiler_builtins::float::Float;
 
     pow!(
         f32, 1e-4, __powisf2;