This vala script is using stdout and stderr as variables which causes compiled C code to fail
because of conflict with global variables from stdlib
--- a/ssh/operation.vala
+++ b/ssh/operation.vala
@@ -84,12 +84,12 @@ public abstract class Operation : GLib.Object {
 
         // And off we go to run the program
         var subprocess = launcher.spawnv(args);
-        string? stdout = null, stderr = null;
+        string? gstdout = null, gstderr = null;
         try {
-            yield subprocess.communicate_utf8_async(input, cancellable, out stdout, out stderr);
-            return stdout;
+            yield subprocess.communicate_utf8_async(input, cancellable, out gstdout, out gstderr);
+            return gstdout;
         } catch (GLib.Error e) {
-            Seahorse.Util.show_error(null, this.prompt_title, stderr);
+            Seahorse.Util.show_error(null, this.prompt_title, gstderr);
             throw e;
         }
     }
@@ -221,10 +221,10 @@ public class PrivateImportOperation : Operation {
 
         // Start command to generate public key
         string cmd = "%s -y -f '%s'".printf(Config.SSH_KEYGEN_PATH, file);
-        string stdout = yield operation_async(cmd, null, cancellable);
+        string gstdout = yield operation_async(cmd, null, cancellable);
 
         // We'll build the key string from the output
-        var key_str = new StringBuilder(stdout);
+        var key_str = new StringBuilder(gstdout);
 
         // Only use the first line of the output
         int pos = int.max(key_str.str.index_of_char('\n'), key_str.str.index_of_char('\r'));
@@ -232,7 +232,7 @@ public class PrivateImportOperation : Operation {
             key_str.erase(pos);
 
         // Parse the data so we can get the fingerprint
-        KeyData? keydata = KeyData.parse_line(stdout);
+        KeyData? keydata = KeyData.parse_line(gstdout);
 
         // Add the comment to the output
         if (data.comment != null) {