Python 3.10 builds are broken on Travis

Author: domdfcoding

.travis.yml

@@ -9,7 +9,6 @@ python:
   - '3.7'
   - '3.8'
   - '3.9'
-  - '3.10-dev'
 
 arch:
   - amd64
@@ -43,8 +42,6 @@ jobs:
       arch: arm64
     - python: '3.9'
       arch: arm64
-    - python: '3.10-dev'
-      arch: arm64
 
   include:
     - stage: test

repo_helper.yml

@@ -27,7 +27,6 @@ python_versions:
  - '3.7'
  - '3.8'
  - '3.9'
- - '3.10-dev'
 
 # additional lines for MANIFEST.in
 manifest_additional:

setup.cfg

@@ -27,7 +27,6 @@ classifiers =
     Operating System :: OS Independent
     Programming Language :: Python
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8

tox.ini

@@ -19,13 +19,13 @@
 #     * pytest
 
 [tox]
-envlist = py36, py37, py38, py39, py310-dev, mypy, build
+envlist = py36, py37, py38, py39, mypy, build
 skip_missing_interpreters = True
 requires = pip>=20.2.1
 isolated_build = True
 
 [envlists]
-test = py36, py37, py38, py39, py310-dev
+test = py36, py37, py38, py39
 qa = mypy, lint
 cov = py36, coverage
 
@@ -35,15 +35,13 @@ python =
     3.7: py37, build, mypy
     3.8: py38, build
     3.9: py39, build
-    3.10-dev: py310-dev, build
 
 [gh-actions]
 python =
     3.6: py36, build
     3.7: py37, build
     3.8: py38, build
     3.9: py39, build
-    3.10-dev: py310-dev, build
 
 [testenv]
 setenv =