When a Travis chutney job fails, use chutney's new "diagnostics.sh" tool
to produce detailed diagnostic output.

Closes ticket 32792.

"ours" to avoid version bump.

Conflicts:
* Keep TOR_TEST_RNG_SEED from maint-0.4.1
* Keep the ordering from bug33195_035

Putting the slowest jobs first takes full advantage of Travis
concurrency.

Closes 33194.

Part of 33194.

The job was previously set to fast_finish / allow_failure, to
speed up the build.

Closes ticket 33195.

Alexander Færøy authored Jan 15, 2020 and teor committed Feb 12, 2020

This patch ensures that we always lowercase the BridgeDistribution from
torrc in descriptors before submitting it.

See: https://bugs.torproject.org/32753

This will our "git push" hook not complain about pushing from
maint-0.4.1.

We introduced these BUG() checks in b0ddaac0 to prevent a
recurrence of bug 23690.  But there's a report of the BUG() message
getting triggered and filling up the disk.  Let's change it to
IF_BUG_ONCE().

Fixes bug 33093; bugfix on 0.3.2.2-alpha.

Stop allowing failures on the Travis CI stem tests job. It looks like
all the stem hangs we were seeing are now fixed, but let's make sure we
see them if they happen again.

Closes ticket 33075.

Fixes bug 32778; bugfix on 0.4.1.1-alpha.

Peter Gerber authored Jan 05, 2020 and Peter Gerber committed Jan 05, 2020

Allow calls to dup() which was introduced in commit a22fbab9.

From a security perspective, I don't think this should impact the
security of the sandbox significantly. As far as I can tell, there
is nothing an adversary can do with a duplicated FD that can't be
done with the original.

Peter Gerber authored Jun 10, 2019 and Nick Mathewson committed Dec 17, 2019

This fixes a startup crash with libseccomp v2.4.0 if Sandbox is
set to 1.

Merge:
* libzstd-dev from ticket32242_035
* shellcheck from maint-0.4.0

Merge
* Chutney Trusty deletion in bug32240_029
* NSS addition in maint-0.3.5