Bug#917184: FTBFS building for armel on arm64

[Steve McIntyre]

Package: src:haskell-cipher-aes
Version: 0.2.11-8
Severity: important

Hi!

I've been doing a full rebuild of the Debian archive, building all
source packages targeting armel and armhf using arm64 hardware. We are
planning in future to move all of our 32-bit armel/armhf builds to
using arm64 machines, so this rebuild is to identify packages that
might have problems with this configuration.

I've tried to build haskell-cipher-aes like this, and it's failing its
test suite. I've tried to find out why, but the test suite is not very
helpful at identifying actual failures. Here's a log:

(sid-armel)steve at maul:~/build/haskell-cipher-aes/haskell-cipher-aes-0.2.11$ debian/hlibrary.setup test --builddir=dist-ghc --show-details=always -v2
Running 1 test suites...
Test suite test-cipher-aes: RUNNING...
dist-ghc/build/test-cipher-aes/test-cipher-aes
Test suite test-cipher-aes: FAIL
Test suite logged to: dist-ghc/test/cipher-aes-0.2.11-test-cipher-aes.log
0 of 1 test suites (0 of 1 test cases) passed.
(sid-armel)steve at maul:~/build/haskell-cipher-aes/haskell-cipher-aes-0.2.11$ cat dist-ghc/test/cipher-aes-0.2.11-test-cipher-aes.log
Test suite test-cipher-aes: RUNNING...
Test suite test-cipher-aes: FAIL
Test suite logged to: dist-ghc/test/cipher-aes-0.2.11-test-cipher-aes.log

I've no idea where to start with debugging this.

-- System Information:
Debian Release: 9.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-debug'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-8-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)