Redis I/O error when testing redis with make test

I'm nw to redis and just installed it (not installed yet, tested first) and I got this error. Is it something to worrie about or is it safe to continoue install?

Ubuntu 14.04 VMware Workstation with Ubuntu as guest and Windows as host CPU is maxed out during test, 100% PHP 5.6

=== REDIS BUG REPORT END. Make sure to include from START to END. ===

       Please report the crash by opening an issue on github:

           http://github.com/antirez/redis/issues

  Suspect RAM error? Use redis-server --test-memory to verify it.




Logged warnings (pid 5176):
(none)

[exception]: Executing test client: I/O error reading reply.
I/O error reading reply
    while executing
"wait_for_condition 500 100 {
                            [lindex [[lindex $slaves 0] role] 3] eq {connected} &&
                            [lindex [[..."
    ("uplevel" body line 26)
    invoked from within
"uplevel 1 $code"
    (procedure "test" line 29)
    invoked from within
"test "Connect multiple slaves at the same time (issue #141), diskless=$dl" {
                        # Send SLAVEOF commands to slaves
               ..."
    ("uplevel" body line 3)
    invoked from within
"uplevel 1 $code "
    (procedure "start_server" line 3)
    invoked from within
"start_server {} {
                    lappend slaves [srv 0 client]
                    test "Connect multiple slaves at the same time (issue #141), d..."
    ("uplevel" body line 3)
    invoked from within
"uplevel 1 $code "
    (procedure "start_server" line 3)
    invoked from within
"start_server {} {
                lappend slaves [srv 0 client]
                start_server {} {
                    lappend slaves [srv 0 client]
  ..."
    ("uplevel" body line 3)
    invoked from within
"uplevel 1 $code "
    (procedure "start_server" line 3)
    invoked from within
"start_server {} {
            lappend slaves [srv 0 client]
            start_server {} {
                lappend slaves [srv 0 client]
              ..."
    ("uplevel" body line 12)
    invoked from within
"uplevel 1 $code "
    (procedure "start_server" line 3)
    invoked from within
"start_server {tags {"repl"}} {
        set master [srv 0 client]
        $master config set repl-diskless-sync $dl
        set master_host [srv 0 host..."
    ("foreach" body line 2)
    invoked from within
"foreach dl {no yes} {
    start_server {tags {"repl"}} {
        set master [srv 0 client]
        $master config set repl-diskless-sync $dl
        s..."
    (file "tests/integration/replication.tcl" line 186)
    invoked from within
"source $path"
    (procedure "execute_tests" line 4)
    invoked from within
"execute_tests $data"
    (procedure "test_client_main" line 10)
    invoked from within
"test_client_main $::test_server_port "
Killing still running Redis server 3384
Killing still running Redis server 3431
Killing still running Redis server 3443
Killing still running Redis server 3728
Killing still running Redis server 4016
Killing still running Redis server 4060
Killing still running Redis server 5176
Killing still running Redis server 5205
Killing still running Redis server 5219
Killing still running Redis server 5697
Killing still running Redis server 5725
I/O error reading reply
    while executing
"{*}$r zrem $k $v"
    ("uplevel" body line 1)
    invoked from within
"uplevel 1 [lindex $args $path]"
    (procedure "randpath" line 3)
    invoked from within
"randpath {{*}$r zadd $k $d $v}  {{*}$r zrem $k $v}  {
                            set otherzset [findKeyWithType {*}$r zset]
                         ..."
    (procedure "createComplexDataset" line 68)
    invoked from within
"createComplexDataset $r $ops"
    (procedure "bg_complex_data" line 4)
    invoked from within
"bg_complex_data [lindex $argv 0] [lindex $argv 1] [lindex $argv 2] [lindex $argv 3]"
    (file "tests/helpers/bg_complex_data.tcl" line 10)
I/O error reading reply
    while executing
"{*}$r randomkey"
    (procedure "findKeyWithType" line 3)
    invoked from within
"findKeyWithType {*}$r zset"
    ("uplevel" body line 2)
    invoked from within
"uplevel 1 [lindex $args $path]"
    (procedure "randpath" line 3)
    invoked from within
"randpath {{*}$r zadd $k $d $v}  {{*}$r zrem $k $v}  {
                            set otherzset [findKeyWithType {*}$r zset]
                         ..."
    (procedure "createComplexDataset" line 68)
    invoked from within
"createComplexDataset $r $ops"
    (procedure "bg_complex_data" line 4)
    invoked from within
"bg_complex_data [lindex $argv 0] [lindex $argv 1] [lindex $argv 2] [lindex $argv 3]"
    (file "tests/helpers/bg_complex_data.tcl" line 10)
I/O error reading reply
    while executing
"{*}$r type $k"
    (procedure "createComplexDataset" line 43)
    invoked from within
"createComplexDataset $r $ops"
    (procedure "bg_complex_data" line 4)
    invoked from within
"bg_complex_data [lindex $argv 0] [lindex $argv 1] [lindex $argv 2] [lindex $argv 3]"
    (file "tests/helpers/bg_complex_data.tcl" line 10)
make[1]: *** [test] Error 1
make[1]: Leaving directory `/redis-stable/src'
make: *** [test] Error 2

Comment From: enoch85

Never mind, worked after I proceeded with install. Sorry for noice.

Comment From: cburatto

(CENTOS 7) This will sound obvious: I had the same issue, although installation was successful. Port 6379 was not opened on firewall. Opened port 6379 and all tests passed.

Comment From: andrewtyw

Opening port 6379 does not work for me. But for my cases, using make CFLAGS="-march=x86-64" test can work.