ci: switch to xenial (#1234)

BurntSushi · web-flow · commit bef1f0e77018 · 2019-04-03T19:52:34.000-04:00
Rust is having problems with trusty, in particular, see this bug I filed: rust-lang/rust#59411 This was purpotedly fixed in rust-lang/rust#59468, but it appears the issue is still occurring. This commit tries to update to Ubuntu 16.04 in the hope that it will fix this problem.
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,5 @@
 language: rust
+dist: xenial
 env:
   global:
     - PROJECT_NAME: ripgrep

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	`language: rust`
	`2`	`+dist: xenial`
`2`	`3`	`env:`
`3`	`4`	`global:`
`4`	`5`	`- PROJECT_NAME: ripgrep`