FAIL: test-out-of-memory?

Building your guile-2.2 package, or indeed debian's, fails identically for me, with

wrote `/home/ubuntu/xsrc/guile-2.2-2.2.2+2.orig/cache/guile/ccache/2.2-LE-8-3.A/home/ubuntu/xsrc/guile-2.2-2.2.2+2.orig/test-suite/standalone/test-out-of-memory.go'
GC Warning: Failed to expand heap by 134348800 bytes
GC Warning: Failed to expand heap by 134217728 bytes
GC Warning: Out of Memory! Heap size: 1 MiB. Returning NULL!
error creating finalization thread: Cannot allocate memory
GC Warning: Failed to expand heap by 1000132608 bytes
GC Warning: Failed to expand heap by 1000001536 bytes
GC Warning: Out of Memory! Heap size: 1 MiB. Returning NULL!
GC Warning: Failed to expand heap by 499712 bytes
GC Warning: Failed to expand heap by 65536 bytes
GC Warning: Out of Memory! Heap size: 1 MiB. Returning NULL!
GC Warning: Failed to expand heap by 499712 bytes
GC Warning: Failed to expand heap by 65536 bytes
GC Warning: Out of Memory! Heap size: 1 MiB. Returning NULL!
Warning: Unwind-only `out-of-memory' exception; skipping pre-unwind handler.
FAIL: test-out-of-memory
==================================
1 of 39 tests failed

This is on two different x86_64 machines, just running debuild -b -uc -us.

Suggestions?