diff --git a/.travis.yml b/.travis.yml
index dec435604..40f351ae6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,12 +12,7 @@ env:
     - TAHOE_LAFS_HYPOTHESIS_PROFILE=ci
 
 install:
-# ~/.local/bin is on $PATH by default, but on OS-X, --user puts it elsewhere
-  - if [ "${TRAVIS_OS_NAME}" = "osx" ]; then export PATH=$HOME/Library/Python/2.7/bin:$PATH; fi
-  - if [ "${TRAVIS_OS_NAME}" = "osx" ]; then wget https://bootstrap.pypa.io/get-pip.py && sudo python ./get-pip.py; fi
-  - pip list
-  - if [ "${TRAVIS_OS_NAME}" = "osx" ]; then pip install --user --upgrade codecov tox setuptools virtualenv; fi
-  - if [ "${TRAVIS_OS_NAME}" = "linux" ]; then pip install --upgrade codecov tox setuptools virtualenv; fi
+  - pip install --upgrade tox setuptools virtualenv
   - echo $PATH; which python; which pip; which tox
   - python misc/build_helpers/show-tool-versions.py
 
@@ -25,13 +20,6 @@ script:
   - |
     set -eo pipefail
     tox -e ${T}
-    # To verify that the resultant PyInstaller-generated binary executes
-    # cleanly (i.e., that it terminates with an exit code of 0 and isn't
-    # failing due to import/packaging-related errors, etc.).
-    if [ "${T}" = "pyinstaller" ]; then dist/Tahoe-LAFS/tahoe --version; fi
-
-after_success:
-  - if [ "${T}" = "coverage" ]; then codecov; fi
 
 notifications:
   email: false
@@ -45,26 +33,6 @@ notifications:
 
 matrix:
   include:
-  - os: linux
-    python: '2.7'
-    env: T=coverage LANG=en_US.UTF-8
-  - os: linux
-    python: '2.7'
-    env: T=codechecks LANG=en_US.UTF-8
-  - os: linux
-    python: '2.7'
-    env: T=pyinstaller LANG=en_US.UTF-8
-  - os: linux
-    python: '2.7'
-    env: T=py27 LANG=C
-  - os: osx
-    python: '2.7'
-    env: T=py27 LANG=en_US.UTF-8
-    language: generic  # "python" is not available on OS-X
-  - os: osx
-    python: '2.7'
-    env: T=pyinstaller LANG=en_US.UTF-8
-    language: generic  # "python" is not available on OS-X
   - os: linux
     python: '3.6'
     env: T=py36
diff --git a/newsfragments/3330.minor b/newsfragments/3330.minor
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index 000000000..e69de29bb
diff --git a/newsfragments/3331.minor b/newsfragments/3331.minor
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index 000000000..e69de29bb
diff --git a/newsfragments/3332.minor b/newsfragments/3332.minor
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index 000000000..e69de29bb
diff --git a/newsfragments/3333.minor b/newsfragments/3333.minor
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index 000000000..e69de29bb
diff --git a/newsfragments/3334.minor b/newsfragments/3334.minor
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index 000000000..e69de29bb
diff --git a/newsfragments/3335.minor b/newsfragments/3335.minor
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index 000000000..e69de29bb