CI: cannot install gometalinter at CircleCI

[sawadashota]

Describe the bug

No longer gometalinter installer doesn't work.
It seems default installation directory was changed to "$GOPATH" from "./bin"

alecthomas/gometalinter@8389125#diff-80423f13d45b53af35790ffc6009be4d

CircleCI log

$ #!/bin/bash -eo pipefail
curl -L https://git.io/vp6lP | sh
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0

100  9857  100  9857    0     0  89002      0 --:--:-- --:--:-- --:--:-- 89002
alecthomas/gometalinter info checking GitHub for latest tag
alecthomas/gometalinter info found version: 2.0.12 for v2.0.12/linux/amd64
install: cannot change permissions of ‘/go/bin’: Operation not permitted
Exited with code 1

To Reproduce
Steps to reproduce the behavior:

1. exec curl -L https://git.io/vp6lP | sh at CircleCI

Version:

• Environment: CircleCI
• Version master

[aeneasr]

Resolved by #1273 - thank you!