Cli: Dependency package download failed

[lvbin2012]

The package "https://github.com/cpuguy83/go-md2man/v2/md2man" used in docs.go could not been download any more. It needs to be fixed please.

[zzell]

Downgrading to v1.21.0 worked for me.

[lynncyrin]

@lvbin2012 @zzell @vulcan-lin @lbarman can any of you show me a CI build that reproduces this?

[saschagrunert]

@lvbin2012 did you run this with enabled go modules? How does the output of go env look like?

[johnnylei]

i met this problem also; "urfave/cli/docs.go:11:2: cannot find package "github.com/cpuguy83/go-md2man/v2/md2man"";
$ go env

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/root/go"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build572817432=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"

[lynncyrin]

Still waiting for someone to give me a full reproduction in CI 🙂

[lynncyrin]

Hey FYI for everyone following this, I still don't have enough information to debug this! Please help me out with a CI build I can look at, so I can have the full context of the failure

[johnnylei]

Still waiting for someone to give me a full reproduction in CI 🙂

Excuse me, What's "CI" means?

[saschagrunert]

Still waiting for someone to give me a full reproduction in CI slightly_smiling_face

Excuse me, What's "CI" means?

Can you provide us a reproducible environment, like a container and some commands? :)

[johnnylei]

go version:go version go1.7.1 linux/amd64
os: ubuntu 14.04
kernel:3.13.0-83-generic
command: $ go build main.go

package main

import (
    "fmt"
    "github.com/urfave/cli"
    "log"
    "os"
    "os/exec"
    "syscall"
)

func main() {
    app := cli.NewApp()
    app.Commands = []cli.Command{
        {
            Name: "run",
            Usage: `create a container with namespace and cgroups limit mydocker run -ti [command]`,
            Flags: []cli.Flag{
                cli.BoolFlag{
                    Name: "ti",
                },
            },
            Action: func(c *cli.Context) error {
                if len(c.Args()) < 1 {
                    return fmt.Errorf("missing container command")
                }

                cmd := exec.Command("/proc/self/exe", "init", c.Args().Get(0))
                cmd.SysProcAttr = &syscall.SysProcAttr{
                    Cloneflags:syscall.CLONE_NEWIPC | syscall.CLONE_NEWUTS | syscall.CLONE_NEWPID | syscall.CLONE_NEWNS | syscall.CLONE_NEWNET,
                }

                if tty := c.Bool("ti"); tty {
                    cmd.Stdin = os.Stdin
                    cmd.Stdout = os.Stdout
                    cmd.Stderr = os.Stderr
                }

                if err := cmd.Start(); err != nil {
                    log.Fatal(err)
                }

                if err := cmd.Wait(); err != nil {
                    log.Fatal(err)
                }

                return nil
            },
        },
        {
            Name: "init",
            Usage: "init for container",
            Action: func(c *cli.Context) error {
                command := c.Args().Get(0)
                if err := syscall.Mount("proc", "/proc", "proc", uintptr(syscall.MS_NOEXEC | syscall.MS_NOSUID | syscall.MS_NOSUID), ""); err != nil {
                    log.Fatal(err)
                }

                argv := []string{command}
                if err:= syscall.Exec(command, argv, os.Environ()); err !=nil {
                    log.Fatal(err)
                }
                return nil
            },
        },
    }

    if err := app.Run(os.Args); err != nil {
        log.Fatal(err)
    }
}

message

../../urfave/cli/docs.go:11:2: cannot find package "github.com/cpuguy83/go-md2man/v2/md2man" in any of:
    /usr/local/go/src/github.com/cpuguy83/go-md2man/v2/md2man (from $GOROOT)
    /root/go/src/github.com/cpuguy83/go-md2man/v2/md2man (from $GOPATH)

[lynncyrin]

@johnnylei that's better, but I need a bit more 🔍 if it's in a public repo, can you link me to the repo? Otherwise can you give me:

• your go.mod / go.sum file
• the command you are running when you get the error above

[johnnylei]

@johnnylei that's better, but I need a bit more 🔍 if it's in a public repo, can you link me to the repo? Otherwise can you give me:

• your go.mod / go.sum file
• the command you are running when you get the error above

https://github.com/johnnylei/my_docker

[AudriusButkevicius]

We use go modules, this requires go 1.12 or even 1.13. your go binary does not support go modules and fetches random versions of our dependencies.

[johnnylei]

We use go modules, this requires go 1.12 or even 1.13. your go binary does not support go modules and fetches random versions of our dependencies.

thanks, i fixed this problem using git checkout v1.17.0;

[lynncyrin]

Pre-emptively: please keep this issue open, I'm not confident that johnnylei's issue is the same as everyone else's.

[lynncyrin]

@lvbin2012 @zzell @vulcan-lin @lbarman @tharvik can you go through the debugging steps above, so we can get more details about this issue? You asked for us to fix a problem we don't know how to reproduce, and cannot help you without more input.

[lbarman]

Hi @lynncyrin , sorry for being unresponsive. The problem does not happen when I download everything on a fresh computer; I must have some package stuck somewhere, however go get -u ./... is currently not solving the issue. But I can confirm that if you start from 0 (no Go packages on a VM), I don't get the issue.

[lynncyrin]

@lbarman does that mean this issue https://github.com/dedis/prifi/issues/213 is resolved also?

[lynncyrin]

👋 @lvbin2012 one last ping on this 🙏 can you go through some of the same debugging instructions that are described above? If not, I can close this ♻️

[tharvik]

@lynncyrin dedis/prifi#213 is resolved (or rather, not reproducable), looks like a transient issue.

[lynncyrin]

As far as I can tell, nobody is still experiencing an issue here that we can solve on our end - so I'm closing this.

Please feel free to comment again if you have a similar issue, ideally with debugging information included. Thanks everyone! ✨