diff --git a/src/main/java/com/google/devtools/build/lib/remote/logging/BUILD b/src/main/java/com/google/devtools/build/lib/remote/logging/BUILD
index 8cb4b04f90cbeb..46a9b5f5caaabe 100644
--- a/src/main/java/com/google/devtools/build/lib/remote/logging/BUILD
+++ b/src/main/java/com/google/devtools/build/lib/remote/logging/BUILD
@@ -18,6 +18,7 @@ java_library(
         "//src/main/java/com/google/devtools/build/lib/remote/util",
         "//src/main/java/com/google/devtools/build/lib/util/io",
         "//src/main/protobuf:remote_execution_log_java_proto",
+        "//third_party:flogger",
         "//third_party:jsr305",
         "//third_party/grpc:grpc-jar",
         "//third_party/protobuf:protobuf_java",
diff --git a/src/main/java/com/google/devtools/build/lib/remote/logging/LoggingInterceptor.java b/src/main/java/com/google/devtools/build/lib/remote/logging/LoggingInterceptor.java
index ee4771fe99e7f0..c6738942b2d783 100644
--- a/src/main/java/com/google/devtools/build/lib/remote/logging/LoggingInterceptor.java
+++ b/src/main/java/com/google/devtools/build/lib/remote/logging/LoggingInterceptor.java
@@ -20,6 +20,7 @@
 import build.bazel.remote.execution.v2.ExecutionGrpc;
 import build.bazel.remote.execution.v2.RequestMetadata;
 import com.google.bytestream.ByteStreamGrpc;
+import com.google.common.flogger.GoogleLogger;
 import com.google.devtools.build.lib.clock.Clock;
 import com.google.devtools.build.lib.remote.logging.RemoteExecutionLog.LogEntry;
 import com.google.devtools.build.lib.remote.util.TracingMetadataUtils;
@@ -39,6 +40,8 @@
 
 /** Client interceptor for logging details of certain gRPC calls. */
 public class LoggingInterceptor implements ClientInterceptor {
+  private static final GoogleLogger logger = GoogleLogger.forEnclosingClass();
+
   private final AsynchronousFileOutputStream rpcLogFile;
   private final Clock clock;
 
@@ -133,12 +136,22 @@ public void onMessage(RespT message) {
               super.onMessage(message);
             }
 
+            /**
+             * This method must not throw any exceptions! Doing so will cause the wrapped call to
+             * silently hang indefinitely: https://github.com/grpc/grpc-java/pull/6107
+             */
             @Override
             public void onClose(Status status, Metadata trailers) {
               entryBuilder.setEndTime(getCurrentTimestamp());
               entryBuilder.setStatus(makeStatusProto(status));
               entryBuilder.setDetails(handler.getDetails());
-              rpcLogFile.write(entryBuilder.build());
+              try {
+                rpcLogFile.write(entryBuilder.build());
+              } catch (RuntimeException e) {
+                // e.g. the log file is already closed.
+                logger.atWarning().withCause(e).log(
+                    "Unable to write RPC log entry for %s", entryBuilder.build());
+              }
               super.onClose(status, trailers);
             }
           },