Two random plugins are never updated

I'm facing an issue where two random plugins do not get updated. It's always two, but it would not be the same ones every time. Have you seen this before? Any idea where I could start looking to solve this?

I see this on both my work and personal computer (sharing the same vim config).

```
Updating plugins (56/58)
[======================================================== ]

- papercolor-theme: OK
- fzf: OK
* vimwiki: Updating ...
- apiblueprint.vim: OK
- vim-puppet: OK
- vim-signify: OK
- vim-colors-solarized: OK
- yats.vim: OK
- neosnippet: OK
- vim-coffee-script: OK
- csv.vim: OK
- neomake: OK
- nvim-typescript: OK
- material.vim: OK
- neosnippet-snippets: OK
- ctrlp.vim: OK
- tagbar: OK
- vim-rhubarb: OK
- denite.nvim: OK
- vim-markdown: OK
- pgsql.vim: OK
- neocomplcache: OK
* goyo.vim: Updating ...
- vim-ruby: OK
- ack.vim: OK
- vim-go: OK
- vim-terraform: OK
- vim-airline: OK
- elly.vim: OK
- float-preview.nvim: OK
- iceberg.vim: OK
- editorconfig-vim: OK
- vim-toml: OK
- nerdtree-git-plugin: OK
- nerdtree: OK
- vim-fugitive: OK
- thrift.vim: OK
- vim-one: OK
- tabular: OK
- fzf.vim: OK
- ayu-vim: OK
- vim-tmux-navigator: OK
- vim-visual-multi: OK
- nginx.vim: OK
- vim-jsx: OK
- bclose.vim: OK
- vim-delve: OK
- vim-graphql: OK
- neoformat: OK
- minimalist: OK
- vim-pug: OK
- vim-surround: OK
- typescript-vim: OK
- vim-fish: OK
- vim-javascript: OK
- plantuml-syntax: OK
- nerdcommenter: OK
- haproxy.vim: OK
```

```
:version
NVIM v0.6.1
Build type: Release
LuaJIT 2.1.0-beta3
Compiled by builduser

Features: +acl +iconv +tui
See ":help feature-compile"

system vimrc file: "$VIM/sysinit.vim"
fall-back for $VIM: "/usr/share/nvim"

Run :checkhealth for more info
```

- Type:
- [ ] Bug
- [ ] Enhancement
- [ ] Feature Request
- [X] Question
- OS:
- [ ] All/Other
- [X] Linux
- [X] OS X
- [ ] Windows
- Vim:
- [ ] Terminal Vim
- [ ] GVim
- [X] Neovim