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-rw-r--r--src/libstd/sys/common/mod.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/sys/common/mod.rs b/src/libstd/sys/common/mod.rs
index 67b19682fc9..a1f3f477b3a 100644
--- a/src/libstd/sys/common/mod.rs
+++ b/src/libstd/sys/common/mod.rs
@@ -28,7 +28,7 @@ macro_rules! rtassert {
 
 pub mod args;
 pub mod at_exit_imp;
-#[cfg(feature = "backtrace")]
+#[cfg(any(not(cargobuild), feature = "backtrace"))]
 pub mod backtrace;
 pub mod condvar;
 pub mod io;
@@ -43,7 +43,7 @@ pub mod thread_local;
 pub mod util;
 pub mod wtf8;
 
-#[cfg(feature = "backtrace")]
+#[cfg(any(not(cargobuild), feature = "backtrace"))]
 #[cfg(any(all(unix, not(any(target_os = "macos", target_os = "ios", target_os = "emscripten"))),
           all(windows, target_env = "gnu")))]
 pub mod gnu;