Switch to rustup hyper backend temporarily
diff --git a/appveyor.yml b/appveyor.yml
index b6c666c..b58168c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,9 @@
environment:
+ # When this was added there were revocation check failures when using the
+ # libcurl backend as libcurl checks by default, but rustup doesn't provide the
+ # switch to turn this off. Switch to Hyper which looks to not check for
+ # revocation by default like libcurl does.
+ RUSTUP_USE_HYPER: 1
matrix:
- TARGET: x86_64-pc-windows-gnu
MSYS2_BITS: 64