diff --git a/src/cargo/core/package.rs b/src/cargo/core/package.rs
index 29a768c47..952b7cba2 100644
--- a/src/cargo/core/package.rs
+++ b/src/cargo/core/package.rs
@@ -651,23 +651,6 @@ impl<'cfg> PackageSet<'cfg> {
     }
 }
 
-// When dynamically linked against libcurl, we want to ignore some failures
-// when using old versions that don't support certain features.
-macro_rules! try_old_curl {
-    ($e:expr, $msg:expr) => {
-        let result = $e;
-        if cfg!(target_os = "macos") {
-            if let Err(e) = result {
-                warn!("ignoring libcurl {} error: {}", $msg, e);
-            }
-        } else {
-            result.with_context(|| {
-                anyhow::format_err!("failed to enable {}, is curl not built right?", $msg)
-            })?;
-        }
-    };
-}
-
 impl<'a, 'cfg> Downloads<'a, 'cfg> {
     /// Starts to download the package for the `id` specified.
     ///
@@ -748,7 +731,7 @@ impl<'a, 'cfg> Downloads<'a, 'cfg> {
         // errors here on OSX, but consider this a fatal error to not activate
         // HTTP/2 on all other platforms.
         if self.set.multiplexing {
-            try_old_curl!(handle.http_version(HttpVersion::V2), "HTTP2");
+            crate::try_old_curl!(handle.http_version(HttpVersion::V2), "HTTP2");
         } else {
             handle.http_version(HttpVersion::V11)?;
         }
@@ -760,7 +743,7 @@ impl<'a, 'cfg> Downloads<'a, 'cfg> {
         // Once the main one is opened we realized that pipelining is possible
         // and multiplexing is possible with static.crates.io. All in all this
         // reduces the number of connections down to a more manageable state.
-        try_old_curl!(handle.pipewait(true), "pipewait");
+        crate::try_old_curl!(handle.pipewait(true), "pipewait");
 
         handle.write_function(move |buf| {
             debug!("{} - {} bytes of data", token, buf.len());
diff --git a/src/cargo/sources/registry/http_remote.rs b/src/cargo/sources/registry/http_remote.rs
index a57ebf46f..d5c433a3a 100644
--- a/src/cargo/sources/registry/http_remote.rs
+++ b/src/cargo/sources/registry/http_remote.rs
@@ -391,25 +391,6 @@ impl<'cfg> HttpRegistry<'cfg> {
     }
 }
 
-// copied from src/cargo/core/package.rs to keep change minimal
-//
-// When dynamically linked against libcurl, we want to ignore some failures
-// when using old versions that don't support certain features.
-macro_rules! try_old_curl {
-    ($e:expr, $msg:expr) => {
-        let result = $e;
-        if cfg!(target_os = "macos") {
-            if let Err(e) = result {
-                warn!("ignoring libcurl {} error: {}", $msg, e);
-            }
-        } else {
-            result.with_context(|| {
-                anyhow::format_err!("failed to enable {}, is curl not built right?", $msg)
-            })?;
-        }
-    };
-}
-
 impl<'cfg> RegistryData for HttpRegistry<'cfg> {
     fn prepare(&self) -> CargoResult<()> {
         Ok(())
@@ -572,7 +553,7 @@ impl<'cfg> RegistryData for HttpRegistry<'cfg> {
 
         // Enable HTTP/2 if possible.
         if self.multiplexing {
-            try_old_curl!(handle.http_version(HttpVersion::V2), "HTTP2");
+            crate::try_old_curl!(handle.http_version(HttpVersion::V2), "HTTP2");
         } else {
             handle.http_version(HttpVersion::V11)?;
         }
diff --git a/src/cargo/util/network.rs b/src/cargo/util/network.rs
index 337eef0b9..4b27160b0 100644
--- a/src/cargo/util/network.rs
+++ b/src/cargo/util/network.rs
@@ -110,6 +110,24 @@ where
     }
 }
 
+// When dynamically linked against libcurl, we want to ignore some failures
+// when using old versions that don't support certain features.
+#[macro_export]
+macro_rules! try_old_curl {
+    ($e:expr, $msg:expr) => {
+        let result = $e;
+        if cfg!(target_os = "macos") {
+            if let Err(e) = result {
+                warn!("ignoring libcurl {} error: {}", $msg, e);
+            }
+        } else {
+            result.with_context(|| {
+                anyhow::format_err!("failed to enable {}, is curl not built right?", $msg)
+            })?;
+        }
+    };
+}
+
 #[test]
 fn with_retry_repeats_the_call_then_works() {
     use crate::core::Shell;