Updated travis to use 1.38.0 since tarpaulin needs a newer feature

Author: TheDan64

.travis.yml

@@ -60,7 +60,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-3.6-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: trusty
     - env:
         - LLVM_VERSION="3.7"
@@ -73,7 +73,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-3.7-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: trusty
     - env:
         - LLVM_VERSION="3.8"
@@ -86,7 +86,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-3.8-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: trusty
     # 3.9 seems to have a linking issue :/
     # - env:
@@ -100,7 +100,7 @@ matrix:
     #       packages:
     #         - *BASE_PACKAGES
     #         - llvm-3.9-dev
-    #       rust: 1.36.0
+    #       rust: 1.38.0
     #       dist: trusty
     - env:
         - LLVM_VERSION="4.0"
@@ -113,7 +113,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-4.0-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: trusty
     - env:
         - LLVM_VERSION="5.0"
@@ -126,7 +126,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-5.0-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: trusty
     - env:
         - LLVM_VERSION="6.0"
@@ -139,7 +139,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-6.0-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: trusty
     - env:
         - LLVM_VERSION="7.0"
@@ -152,7 +152,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-7-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: trusty
     - env:
         - LLVM_VERSION="8.0"
@@ -165,7 +165,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-8-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: trusty
     - env:
         - LLVM_VERSION="9.0"
@@ -180,7 +180,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-9-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: bionic
     - env:
         - LLVM_VERSION="10.0"
@@ -195,7 +195,7 @@ matrix:
           packages:
             - *BASE_PACKAGES
             - llvm-10-dev
-      rust: 1.36.0
+      rust: 1.38.0
       dist: bionic
     - deploy: # Documentation build; Only latest supported LLVM version for now
         provider: pages
@@ -250,7 +250,7 @@ env:
     - RUSTFLAGS="-C link-dead-code -C target-cpu=native -l ffi"
 
 after_success: |
-  if [[ "$TRAVIS_RUST_VERSION" == 1.36.0 ]]; then
+  if [[ "$TRAVIS_RUST_VERSION" == 1.38.0 ]]; then
     cargo tarpaulin --features "llvm${LLVM_VERSION_DASH}" --out Xml
     bash <(curl -s https://codecov.io/bash)
   fi