bazel build/test fails on centos 7.2

bazel version:
```
Build label: 0.14.1- (@non-git)
Build target: bazel-out/k8-opt/bin/src/main/java/com/google/devtools/build/lib/bazel/BazelServer_deploy.jar
Build time: Thu Jun 21 14:01:44 2018 (1529589704)
Build timestamp: 1529589704
Build timestamp as int: 1529589704
```
gcc version:
```
gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-16)
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
```
build failures:
absl/types/variant_exception_safety_test.cc
absl/types/optional_exception_safety_test.cc
assignment operator is deleted
```
ERROR: /data0/sangwu/abseil-cpp/absl/types/BUILD.bazel:263:1: C++ compilation of rule '//absl/types:variant_exception_safety_test' failed (Exit 1)
In file included from external/com_google_googletest/googletest/include/gtest/gtest.h:58:0,
from external/com_google_googletest/googlemock/include/gmock/internal/gmock-internal-utils.h:46,
from external/com_google_googletest/googlemock/include/gmock/gmock-actions.h:46,
from external/com_google_googletest/googlemock/include/gmock/gmock.h:58,
from absl/types/variant_exception_safety_test.cc:21:
absl/types/variant_exception_safety_test.cc: In lambda function:
absl/types/variant_exception_safety_test.cc:202:43: error: use of deleted function 'absl::lts_2018_06_20::variant& absl::lts_2018_06_20::variant::operator=(const absl::lts_2018_06_20::variant&) [with T0 = testing::ThrowingValue<>; Tn = {testing::ThrowingValue<(testing::TypeSpec)1>, testing::ThrowingValue<(testing::TypeSpec)2>, std::vector, testing::ThrowingAllocator, (testing::AllocSpec)0> >}]'
EXPECT_TRUE(TestNothrowOp([&]() { lhs = rhs; }));
```
test failures:
```
[ RUN ] Format.ExtendedSecondOffset
absl/time/internal/cctz/src/time_zone_format_test.cc:70: Failure
Expected equality of these values:
ans
Which is: "+04:31:19"
format(fmt, tp, tz)
Which is: "+04:00:00"
%E*z
absl/time/internal/cctz/src/time_zone_format_test.cc:71: Failure
Expected equality of these values:
"xxx " + ans
Which is: "xxx +04:31:19"
format("xxx " + fmt, tp, tz)
Which is: "xxx +04:00:00"
absl/time/internal/cctz/src/time_zone_format_test.cc:72: Failure
Expected equality of these values:
ans + " yyy"
Which is: "+04:31:19 yyy"
format(fmt + " yyy", tp, tz)
Which is: "+04:00:00 yyy"
absl/time/internal/cctz/src/time_zone_format_test.cc:73: Failure
Expected equality of these values:
"xxx " + ans + " yyy"
Which is: "xxx +04:31:19 yyy"
format("xxx " + fmt + " yyy", tp, tz)
Which is: "xxx +04:00:00 yyy"
absl/time/internal/cctz/src/time_zone_format_test.cc:70: Failure
Expected equality of these values:
ans
Which is: "+04:31"
format(fmt, tp, tz)
Which is: "+04:00"
%Ez
absl/time/internal/cctz/src/time_zone_format_test.cc:71: Failure
Expected equality of these values:
"xxx " + ans
Which is: "xxx +04:31"
format("xxx " + fmt, tp, tz)
Which is: "xxx +04:00"
absl/time/internal/cctz/src/time_zone_format_test.cc:72: Failure
Expected equality of these values:
ans + " yyy"
Which is: "+04:31 yyy"
format(fmt + " yyy", tp, tz)
Which is: "+04:00 yyy"
absl/time/internal/cctz/src/time_zone_format_test.cc:73: Failure
Expected equality of these values:
"xxx " + ans + " yyy"
Which is: "xxx +04:31 yyy"
format("xxx " + fmt + " yyy", tp, tz)
Which is: "xxx +04:00 yyy"
[ FAILED ] Format.ExtendedSecondOffset (0 ms)
```
```
[ RUN ] TimeZones.LoadZonesConcurrently
absl/time/internal/cctz/src/time_zone_lookup_test.cc:709: Failure
Expected: (failures.size()) <= (max_failures), actual: 10 vs 3
{ "America/Punta_Arenas", "Asia/Atyrau", "Asia/Barnaul", "Asia/Famagusta", "Asia/Tomsk", "Asia/Yangon", "Europe/Astrakhan", "Europe/Kirov", "Europe/Saratov", "Europe/Ulyanovsk" }
[ FAILED ] TimeZones.LoadZonesConcurrently (333 ms)
```