Update MSRV to 1.49 to match ndarray 0.15

cassiersg · cassiersg · commit 08fa170d226d · 2021-04-06T17:22:18.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,7 +7,7 @@ addons:
       - libssl-dev
 cache: cargo
 rust:
-  - 1.42.0
+  - 1.49.0
   - stable
   - beta
   - nightly
