Merge branch 'maint-0.4.0' into maint-0.4.1

.travis.yml

@@ -29,6 +29,9 @@ env:
     - HARDENING_OPTIONS="--enable-expensive-hardening"
     ## We turn off asciidoc by default, because it's slow
     - ASCIIDOC_OPTIONS="--disable-asciidoc"
+    ## Turn off tor's sandbox in chutney, until we fix sandbox errors that are
+    ## triggered by Ubuntu Xenial and Bionic. See #32722.
+    - CHUTNEY_TOR_SANDBOX="0"
   matrix:
     ## This matrix entry is required, but it doesn't actually create any jobs
     -
@@ -49,10 +52,6 @@ matrix:
     ## Chutney is a fast job, clang is slower on Linux, so we do Chutney clang
     - env: CHUTNEY="yes" CHUTNEY_ALLOW_FAILURES="2" SKIP_MAKE_CHECK="yes"
       compiler: clang
-      ## (Linux only) Use an older Linux image (Ubuntu Trusty)
-      ## The Xenial and Bionic images cause permissions issues for chutney,
-      ## this is a workaround, until we fix #32240.
-      dist: trusty
     ## We check asciidoc with distcheck, to make sure we remove doc products
     ## We use Linux clang, because there are no other Linux clang jobs
     - env: DISTCHECK="yes" ASCIIDOC_OPTIONS="" SKIP_MAKE_CHECK="yes"
@@ -116,8 +115,7 @@ addons:
       - libnss3-dev
       - libscrypt-dev
       - libseccomp-dev
-      ## zstd doesn't exist in Ubuntu Trusty
-      #- libzstd
+      - libzstd-dev
       - shellcheck
       ## Conditional build dependencies
       ## Always installed, so we don't need sudo

changes/ticket32240

+  o Testing:
+    - Turn off Tor's Sandbox in Chutney jobs, and run those jobs on Ubuntu
+      Bionic. Turning off the Sandbox is a work-around, until we fix the
+      sandbox errors in 32722. Closes ticket 32240.

changes/ticket32242

+  o Testing (continuous integration):
+    - Use zstd in our Travis Linux builds. Closes ticket 32242.