Comment 5 for bug 1559420

Downloading from the Vagrant fixes it.

This diff is rumored to fix it. From: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=818237#28

---
 lib/vagrant/bundler.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/vagrant/bundler.rb b/lib/vagrant/bundler.rb
index 5a5c185..c4a3837 100644
--- a/lib/vagrant/bundler.rb
+++ b/lib/vagrant/bundler.rb
@@ -272,7 +272,6 @@ module Vagrant

       # Reset the all specs override that Bundler does
       old_all = Gem::Specification._all
- Gem::Specification.all = nil

       # /etc/gemrc and so on.
       old_config = nil
@@ -286,6 +285,8 @@ module Vagrant
       end
       Gem.configuration = NilGemConfig.new

+ Gem::Specification.reset
+
       # Use a silent UI so that we have no output
       Gem::DefaultUserInteraction.use_ui(Gem::SilentUI.new) do
         return yield

--
2.7.0