submodules: update cargo from 974eb438d to 2d5c2381e

Changes:
````
Use the same index location on nightly as beta
relax deprecated diagnostic message check
Don't print to raw stderr in test
Emit the `test` field in cargo metadata
````
This commit is contained in:
Matthias Krüger 2020-08-01 01:41:36 +02:00
parent 62f9aa94c0
commit 21cab87f08

@ -1 +1 @@
Subproject commit 974eb438da8ced6e3becda2bbf63d9b643eacdeb
Subproject commit 2d5c2381e4e50484bf281fc1bfe19743aa9eb37a