I see that ci.guix.gnu.org's builders seem to run out of memory while building kernel headers for i686-linux:
------ xz: (stdin): Cannot allocate memory /gnu/store/ns71xxkb3fzr37934bim9l8xiv68kc7w-tar-1.34/bin/tar: /gnu/store/536ifp75wv8i1kb1k0szv7zd57ygpg0n-linux-libre-6.5.13-guix.tar.xz: Wrote only 2048 of 10240 bytes /gnu/store/ns71xxkb3fzr37934bim9l8xiv68kc7w-tar-1.34/bin/tar: Child returned status 1 /gnu/store/ns71xxkb3fzr37934bim9l8xiv68kc7w-tar-1.34/bin/tar: Error is not recoverable: exiting now ------ https://ci.guix.gnu.org/build/2736161/details
