What version of Go are you using (go version)?

$ go version
go version go1.16.5 linux/amd64

What operating system and processor architecture are you using (go env)?

$ go env
go env
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/go/pkg/mod"
GONOPROXY=""
GONOSUMDB="*.nokia.com"
GOOS="linux"
GOPATH="/go/"
GOPRIVATE=""
GOPROXY="https://repo.lab.pl.alcatel-lucent.com/gocenter"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org https://repo.lab.pl.alcatel-lucent.com/sum-golang-org/"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.17.1"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build4210459107=/tmp/go-build -gno-record-gcc-switches"

What did you do?

The process is running inside a container with base image centos-micro:7.9-22.0,
by calling:

/opt/health/healthClient <port_number>

What did you expect to see?

To create a client connection:

[HOME]/src/health/healthClient/main.go:21
conn, err := grpc.Dial(port, grpc.WithInsecure())
if err != nil {
l4g.Fatal("did not connect: %s", err)
}

What did you see instead?

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x46e0e8]

goroutine 1 [running]:
log.(*Logger).formatHeader(0xc000132140, 0xc000132170, 0xc04c9a9734a8c319, 0x600dae8, 0xc09120, 0x0, 0x0, 0x0)
/usr/local/go/src/log/log.go:105 +0x16e5
log.(*Logger).Output(0xc000132140, 0x2, 0xc000028560, 0x19, 0x0, 0x0)
/usr/local/go/src/log/log.go:179 +0x18d
log.(*Logger).Println(0xc000132140, 0xc0000205c0, 0x2, 0x2)
/usr/local/go/src/log/log.go:200 +0x6a
google.golang.org/grpc/grpclog.(*loggerT).Infoln(0xc0000200e0, 0xc0000205c0, 0x2, 0x2)
[HOME]/pkg/mod/google.golang.org/grpc@v1.36.0/grpclog/loggerv2.go:153 +0x58
google.golang.org/grpc/internal/grpclog.InfoDepth(0x2, 0xc0000205c0, 0x2, 0x2)
[HOME]/pkg/mod/google.golang.org/grpc@v1.36.0/internal/grpclog/grpclog.go:37 +0xa6
google.golang.org/grpc/grpclog.(*componentData).InfoDepth(0xc000112770, 0x1, 0xc000113c90, 0x1, 0x2)
[HOME]/pkg/mod/google.golang.org/grpc@v1.36.0/grpclog/component.go:36 +0x177
google.golang.org/grpc/internal/channelz.Infof(0x978298, 0xc000112770, 0x0, 0x8eba25, 0x11, 0xc000293950, 0x1, 0x1)
[HOME]/pkg/mod/google.golang.org/grpc@v1.36.0/internal/channelz/logging.go:50 +0x1a8
google.golang.org/grpc.DialContext(0x972a10, 0xc00002e058, 0x7ffc25c5a8f2, 0xe, 0xc000293f18, 0x1, 0x1, 0x0, 0x0, 0x0)
[HOME]/pkg/mod/google.golang.org/grpc@v1.36.0/clientconn.go:251 +0x996
google.golang.org/grpc.Dial(...)
[HOME]/pkg/mod/google.golang.org/grpc@v1.36.0/clientconn.go:105
main.main()
[HOME]/src/health/healthClient/main.go:21 +0xf8