x.connection_tls_version failing on Debian Stretch

On Debian Stretch, both release and debug builds:

x.connection_tls_version w2 [ fail ]
        Test ended at 2017-07-24 09:45:33

CURRENT_TEST: x.connection_tls_version
--- /mnt/workspace/mysql-5.7-param/BUILD_TYPE/release/Host/debian-stretch-64bit/rapid/plugin/x/tests/mtr/r/connection_tls_version.result 2017-07-24 12:36:57.001764000 +0300
+++ /mnt/workspace/mysql-5.7-param/BUILD_TYPE/release/Host/debian-stretch-64bit/build/mysql-test/var/2/log/connection_tls_version.reject 2017-07-24 12:45:33.005337265 +0300
@@ -167,7 +167,7 @@
   msg: "bye!"
 }
 ok
-Application terminated with expected error: unsupported protocol (code 2026)
+in main, line 0:ERROR: error:14171102:SSL routines:tls_process_server_hello:unsupported protocol (code 2026)
 not ok
 CONNECTION_TYPE
 SSL/TLS
@@ -182,7 +182,7 @@
   msg: "bye!"
 }
 ok
-Application terminated with expected error: unsupported protocol (code 2026)
+in main, line 0:ERROR: error:14171102:SSL routines:tls_process_server_hello:unsupported protocol (code 2026)
 not ok
 Application terminated with expected error: TLS version is invalid (code 2026)
 not ok
@@ -226,7 +226,7 @@
   msg: "bye!"
 }
 ok
-Application terminated with expected error: socket layer receive error (code 2026)
+in main, line 0:ERROR: error:1409442E:SSL routines:ssl3_read_bytes:tlsv1 alert protocol version (code 2026)
 not ok
 CONNECTION_TYPE
 SSL/TLS
@@ -241,7 +241,7 @@
   msg: "bye!"
 }
 ok
-Application terminated with expected error: socket layer receive error (code 2026)
+in main, line 0:ERROR: error:1409442E:SSL routines:ssl3_read_bytes:tlsv1 alert protocol version (code 2026)
 not ok
 CONNECTION_TYPE
 SSL/TLS

mysqltest: Result content mismatch