Merge pull request #2021 from DARMA-tasking/2018-remove-support-for-o…

…ld-compilers

#2018: Remove support for old compilers

.github/ISSUE_TEMPLATE/bug_report.md

@@ -25,7 +25,7 @@ If applicable, add screenshots to help explain your problem.
 
 **Platform (please complete the following information):**
  - Supercomputer or desktop [e.g., Trinity, Sierra)
- - Compiler environment [e.g., clang-3.9, gcc8]
+ - Compiler environment [e.g., clang-4.0, gcc8]
  - Libraries [e.g., mpich-2, openmpi)
  - Commit ID or release of VT [e.g., vt-1.0.0]
 

.github/workflows/build-docs.yml

@@ -18,7 +18,7 @@ jobs:
       ARCH: amd64
       UBUNTU: 18.04
       COMPILER_TYPE: gnu
-      COMPILER: gcc-5
+      COMPILER: gcc-7
       BUILD_TYPE: release
       ULIMIT_CORE: 0
       VT_LB: 1

README.md

@@ -4,13 +4,10 @@
 [![codecov](https://codecov.io/gh/DARMA-tasking/vt/branch/develop/graph/badge.svg)](https://codecov.io/gh/DARMA-tasking/vt)
 [![License](https://img.shields.io/badge/License-BSD%203--Clause-orange.svg)](https://opensource.org/licenses/BSD-3-Clause)
 ![](https://github.com/DARMA-tasking/vt/workflows/Docker%20Image%20CI/badge.svg)
-[![gcc-5, ubuntu, mpich](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(gcc-5%2C%20ubuntu%2C%20mpich)?branchName=develop&Label=(gcc-5%2C%20ubuntu%2C%20mpich))](https://dev.azure.com/DARMA-tasking/DARMA/_build/latest?definitionId=2&branchName=develop)
-[![gcc-6, ubuntu, mpich](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(gcc-6%2C%20ubuntu%2C%20mpich)?branchName=develop&Label=(gcc-6%2C%20ubuntu%2C%20mpich))](https://dev.azure.com/DARMA-tasking/DARMA/_build/latest?definitionId=7&branchName=develop)
 [![gcc-7, ubuntu, mpich, trace runtime, LB](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(gcc-7%2C%20ubuntu%2C%20mpich%2C%20trace%20runtime%2C%20LB)?branchName=develop&Label=(gcc-7%2C%20ubuntu%2C%20mpich%2C%20trace%20runtime%2C%20LB))](https://dev.azure.com/DARMA-tasking/DARMA/_build/latest?definitionId=8&branchName=develop)
 [![gcc-8, ubuntu, mpich, address sanitizer](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(gcc-8%2C%20ubuntu%2C%20mpich%2C%20address%20sanitizer)?branchName=develop&Label=(gcc-8%2C%20ubuntu%2C%20mpich%2C%20address%20sanitizer))](https://dev.azure.com/DARMA-tasking/DARMA/_build/latest?definitionId=9&branchName=develop)
 [![gcc-9, ubuntu, mpich, zoltan](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(gcc-9%2C%20ubuntu%2C%20mpich%2C%20zoltan)?branchName=develop&Label=(gcc-9%2C%20ubuntu%2C%20mpich%2C%20zoltan))](https://dev.azure.com/DARMA-tasking/DARMA/_build/latest?definitionId=10&branchName=develop)
 [![gcc-10, ubuntu, openmpi, no LB](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(gcc-10%2C%20ubuntu%2C%20openmpi%2C%20no%20LB)?branchName=develop&Label=(gcc-10%2C%20ubuntu%2C%20openmpi%2C%20no%20LB))](https://dev.azure.com/DARMA-tasking/DARMA/_build/latest?definitionId=4&branchName=develop)
-[![clang-3.9, ubuntu, mpich](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(clang-3.9%2C%20ubuntu%2C%20mpich)?branchName=develop&Label=(clang-3.9%2C%20ubuntu%2C%20mpich))](https://dev.azure.com/DARMA-tasking/DARMA/_build/latest?definitionId=3&branchName=develop)
 [![clang-5, ubuntu, mpich, trace](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(clang-5.0%2C%20ubuntu%2C%20mpich)?branchName=develop&Label=(clang-5.0%2C%20ubuntu%2C%20mpich))](https://dev.azure.com/DARMA-tasking/DARMA/_build/latest?definitionId=5&branchName=develop)
 [![clang-9, ubuntu, mpich](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(clang-9%2C%20ubuntu%2C%20mpich)?branchName=develop&Label=(clang-9.0%2C%20ubuntu%2C%20mpich))](https://dev.azure.com/DARMA-tasking/DARMA/_build?definitionId=22&branchName=develop)
 [![clang-10, ubuntu, mpich](https://dev.azure.com/DARMA-tasking/DARMA/_apis/build/status/PR%20tests%20(clang-10%2C%20ubuntu%2C%20mpich)?branchName=develop&Label=(clang-10.0%2C%20ubuntu%2C%20mpich))](https://dev.azure.com/DARMA-tasking/DARMA/_build?definitionId=21&branchName=develop)