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-rw-r--r--src/rt/rust_srv.cpp6
1 files changed, 1 insertions, 5 deletions
diff --git a/src/rt/rust_srv.cpp b/src/rt/rust_srv.cpp
index 758174a4ebb..9192af511d9 100644
--- a/src/rt/rust_srv.cpp
+++ b/src/rt/rust_srv.cpp
@@ -25,11 +25,7 @@ rust_srv::realloc(void *p, size_t bytes) {
 
 void
 rust_srv::log(char const *msg) {
-    printf("rust: %s\n", msg);
-    // FIXME: flushing each time is expensive, but at the moment
-    // necessary to get output through before a rust_task::fail
-    // call. This should be changed.
-    fflush(stdout);
+    fprintf(stderr, "rust: %s\n", msg);
 }
 
 void