rename census log files to avoid build breakage on MacOS
diff --git a/BUILD b/BUILD
index 0a5139d..f6c4338 100644
--- a/BUILD
+++ b/BUILD
@@ -283,7 +283,7 @@
     "src/core/tsi/transport_security.h",
     "src/core/tsi/transport_security_interface.h",
     "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
     "src/core/census/rpc_metric_id.h",
     "src/core/census/grpc_context.c",
     "src/core/census/grpc_filter.c",
@@ -436,7 +436,7 @@
     "src/core/tsi/transport_security.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
     "src/core/census/operation.c",
     "src/core/census/placeholders.c",
     "src/core/census/tracing.c",
@@ -589,7 +589,7 @@
     "src/core/transport/transport.h",
     "src/core/transport/transport_impl.h",
     "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
     "src/core/census/rpc_metric_id.h",
     "src/core/surface/init_unsecure.c",
     "src/core/census/grpc_context.c",
@@ -722,7 +722,7 @@
     "src/core/transport/transport_op_string.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
     "src/core/census/operation.c",
     "src/core/census/placeholders.c",
     "src/core/census/tracing.c",
@@ -1400,7 +1400,7 @@
     "src/core/tsi/transport_security.c",
     "src/core/census/context.c",
     "src/core/census/initialize.c",
-    "src/core/census/log.c",
+    "src/core/census/mlog.c",
     "src/core/census/operation.c",
     "src/core/census/placeholders.c",
     "src/core/census/tracing.c",
@@ -1548,7 +1548,7 @@
     "src/core/tsi/transport_security.h",
     "src/core/tsi/transport_security_interface.h",
     "src/core/census/aggregation.h",
-    "src/core/census/log.h",
+    "src/core/census/mlog.h",
     "src/core/census/rpc_metric_id.h",
   ],
   includes = [