go get github.com/derekparker/delve/cmd/dlv returned a non-zero code: 2

[rpfister51]

Docker build:

$ docker build -t webapp-go .

Fails with following:

Step 2/10 : RUN go get -u -v github.com/derekparker/delve/cmd/dlv
 ---> Running in 021b01f8ca84
github.com/derekparker/delve (download)
github.com/derekparker/delve/vendor/gopkg.in/yaml.v2
github.com/derekparker/delve/pkg/goversion
github.com/derekparker/delve/pkg/dwarf/util
github.com/derekparker/delve/pkg/dwarf/op
github.com/derekparker/delve/pkg/dwarf/godwarf
github.com/derekparker/delve/pkg/dwarf/frame
github.com/derekparker/delve/pkg/dwarf/line
github.com/derekparker/delve/pkg/dwarf/reader
# github.com/derekparker/delve/pkg/dwarf/reader
src/github.com/derekparker/delve/pkg/dwarf/reader/variables.go:78: vrdr.dwarf.Ranges undefined (type *dwarf.Data has no field or method Ranges, but does have dwarf.ranges)
github.com/derekparker/delve/vendor/golang.org/x/arch/x86/x86asm
github.com/derekparker/delve/pkg/config
github.com/derekparker/delve/vendor/golang.org/x/sys/unix
github.com/derekparker/delve/vendor/github.com/peterh/liner
github.com/derekparker/delve/pkg/version
github.com/derekparker/delve/vendor/github.com/spf13/pflag
github.com/derekparker/delve/vendor/github.com/spf13/cobra
The command '/bin/sh -c go get -u -v github.com/derekparker/delve/cmd/dlv' returned a non-zero code: 2

Noticed the line above which includes "vrdr.dwarf.Ranges undefined".

Traced to this problem https://github.com/derekparker/delve/issues/936

Resolution is that golang version 1.7 or greater is required. I will create a pull request.

[montera82]

try upgrading the docker image to latest tag in your docker file

[rpfister51]

"FROM golang:latest" certainly works. The point I was trying to make is that the previous version, "FROM golang:1.6" fails; anyone who tries to run this project with golang:1.6 will see an error. I would agree golang:latest is probably preferable, though some might argue that a project author should specify a version that is known to work.

[tbrownio]

thanks for the tip. I was stuck until I changed to FROM golang:latest