Jobs failing on Travis-CI for Intel

[kishorkunal-raj]

Hi All,
I am running jobs on travis-ci and found that jobs are failing for go1.8.X. Below are the logs

$ git clone --depth=50 --branch=master https://github.com/kishorkunal-raj/reflect2.git kishorkunal-raj/reflect2
$ travis_export_go 1.8.x github.com/kishorkunal-raj/reflect2
0.01s3.98s$ travis_setup_go
go version go1.8.7 linux/amd64
$ export GOPATH="/home/travis/gopath"
$ export PATH="/home/travis/gopath/bin:/home/travis/.gimme/versions/go1.8.7.linux.amd64/bin:/home/travis/bin:/home/travis/bin:/home/travis/.local/bin:/usr/local/lib/jvm/openjdk11/bin:/opt/pyenv/shims:/home/travis/.phpenv/shims:/home/travis/perl5/perlbrew/bin:/home/travis/.nvm/versions/node/v8.12.0/bin:/home/travis/.rvm/gems/ruby-2.5.3/bin:/home/travis/.rvm/gems/ruby-2.5.3@global/bin:/home/travis/.rvm/rubies/ruby-2.5.3/bin:/home/travis/gopath/bin:/home/travis/.gimme/versions/go1.11.1.linux.amd64/bin:/usr/local/maven-3.6.3/bin:/usr/local/cmake-3.12.4/bin:/usr/local/clang-7.0.0/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/home/travis/.rvm/bin:/home/travis/.phpenv/bin:/opt/pyenv/bin:/home/travis/.yarn/bin"
$ export GO111MODULE="auto"
$ gimme version
v1.5.4
$ go version
go version go1.8.7 linux/amd64
go.env
$ go env
before_install.1
1.02s$ go get -t -v ./...
before_install.2
11.36s$ go get -t -v github.com/modern-go/reflect2-tests/...
install
0.08s$ travis_install_go_dependencies 1.8.x -v
3.16s$ ./test.sh
warning: no packages being tested depend on github.com/modern-go/reflect2
ok github.com/modern-go/reflect2-tests 0.004s coverage: 12.2% of statements in github.com/modern-go/reflect2
warning: no packages being tested depend on github.com/modern-go/reflect2
ok github.com/modern-go/reflect2-tests/test15 0.003s coverage: 6.0% of statements in github.com/modern-go/reflect2
warning: no packages being tested depend on github.com/modern-go/reflect2

github.com/stretchr/testify/assert

../../stretchr/testify/assert/assertions.go:1703: undefined: errors.Is
../../stretchr/testify/assert/assertions.go:1726: undefined: errors.Is
../../stretchr/testify/assert/assertions.go:1749: undefined: errors.As
../../stretchr/testify/assert/assertions.go:1766: undefined: errors.Unwrap
../../stretchr/testify/assert/assertions.go:1770: undefined: errors.Unwrap
FAIL github.com/modern-go/reflect2-tests/tests [build failed]
The command "./test.sh" exited with 2.

Done. Your build exited with 1.

Please help me out to fix it.