Rollup merge of #49217 - kennytm:fix-dpl-788, r=alexcrichton
Rollup merge of #49217 - kennytm:fix-dpl-788, r=alexcrichton

Apply temporary fix of travis-ci/dpl#788.

GBGamer/rust,aidancully/rust,GBGamer/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,GBGamer/rust,graydon/rust,GBGamer/rust,graydon/rust,GBGamer/rust,graydon/rust,GBGamer/rust,aidancully/rust,graydon/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,aidancully/rust