[ bug ] pouch logs panic

[shaloulcy]

Ⅰ. Issue Description

pouch logs command panic

Ⅱ. Describe what happened

pouch logs ebb3b6
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0xe8856d]

goroutine 1 [running]:
main.(*LogsCommand).runLogs(0xc420433600, 0xc420379b80, 0x1, 0x1, 0x0, 0x0)
	/tmp/pouchbuild/src/github.com/alibaba/pouch/cli/logs.go:71 +0xfd
main.(*LogsCommand).Init.func1(0xc4203fc6c0, 0xc420379b80, 0x1, 0x1, 0x0, 0x0)
	/tmp/pouchbuild/src/github.com/alibaba/pouch/cli/logs.go:40 +0x48
github.com/alibaba/pouch/vendor/github.com/spf13/cobra.(*Command).execute(0xc4203fc6c0, 0xc420379b50, 0x1, 0x1, 0xc4203fc6c0, 0xc420379b50)
	/tmp/pouchbuild/src/github.com/alibaba/pouch/vendor/github.com/spf13/cobra/command.go:742 +0x49b
github.com/alibaba/pouch/vendor/github.com/spf13/cobra.(*Command).ExecuteC(0xc420281d40, 0xc420153e98, 0x1, 0x1)
	/tmp/pouchbuild/src/github.com/alibaba/pouch/vendor/github.com/spf13/cobra/command.go:827 +0x30e
github.com/alibaba/pouch/vendor/github.com/spf13/cobra.(*Command).Execute(0xc420281d40, 0x1, 0xc420379ae0)
	/tmp/pouchbuild/src/github.com/alibaba/pouch/vendor/github.com/spf13/cobra/command.go:780 +0x2b
main.(*Cli).Run(0xc420078080, 0x164c7e0, 0xc420378240)
	/tmp/pouchbuild/src/github.com/alibaba/pouch/cli/cli.go:78 +0x2f
main.main()
	/tmp/pouchbuild/src/github.com/alibaba/pouch/cli/main.go:49 +0x977

Ⅲ. Describe what you expected to happen

expect to output the container log

Ⅳ. How to reproduce it (as minimally and precisely as possible)

Ⅴ. Anything else we need to know?

Ⅵ. Environment:

• pouch version (use pouch version):

GoVersion:       go1.9.1
KernelVersion:   4.4.0-116-generic
Os:              linux
Version:         0.4.0
APIVersion:      1.24
Arch:            amd64
BuildTime:       Wed, 18 Apr 2018 11:16:54 +0800
GitCommit:       5caea368e2adae0f173049bec2020d4e882dda66

• OS (e.g. from /etc/os-release):

NAME="Ubuntu"
VERSION="16.04.4 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.4 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial

• Kernel (e.g. uname -a):

Linux ubuntu-1 4.4.0-116-generic #140-Ubuntu SMP Mon Feb 12 21:23:04 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

• Install tools:
• Others:

[pouchrobot]

Thanks for your report, @shaloulcy
😱 This is a priority/P0 issue.
Seems to be severe enough.
ping @alibaba/pouch , PTAL.

[oiooj]

Fixed in #1192

[HusterWan]

@shaloulcy thanks for your feedback, since this panic has been solved in #1192 , i will close this issue.