Update compile tests

Author: Marwes

.travis.yml

@@ -18,7 +18,7 @@ branches:
 
 matrix:
   include:
-  - rust: nightly-2020-03-12
+  - rust: nightly-2020-07-26
     #  - rust: beta
   - rust: stable
     env: ARCH=i686

tests/compile-fail/getable-reference-str.rs

@@ -18,6 +18,6 @@ fn main() {
     let vm = new_vm();
     add_extern_module(&vm, "test", |vm| {
         ExternModule::new(vm, primitive!(1, f))
-        //~^ cannot infer an appropriate lifetime for lifetime parameter `'vm` due to conflicting requirements
+        //~^ `thread` has lifetime `'thread` but it needs to satisfy a `'static` lifetime requirement
     });
 }

tests/compile-fail/getable-reference.rs

@@ -30,6 +30,6 @@ fn main() {
     let vm = new_vm();
     add_extern_module(&vm, "test", |vm| {
         ExternModule::new(vm, primitive!(1, f))
-        //~^ cannot infer an appropriate lifetime for lifetime parameter `'vm` due to conflicting requirements
+        //~^ `thread` has lifetime `'thread` but it needs to satisfy a `'static` lifetime requirement
     });
 }

tests/compile-fail/store-ref.rs

@@ -41,6 +41,6 @@ fn main() {
     let vm = new_vm();
     add_extern_module(&vm, "test", |vm| {
         ExternModule::new(vm, primitive!(2, f))
-        //~^ cannot infer an appropriate lifetime for lifetime parameter `'vm` due to conflicting requirements
+        //~^ `thread` has lifetime `'thread` but it needs to satisfy a `'static` lifetime requirement
     });
 }