On current ‘core-updates’, the code in (guix build graft) triggers random Guile crashes (GC issue? thread-safety issue?) when running on Guile 2.2.2, as initially reported by Marius at <https://lists.gnu.org/archive/html/guix-devel/2017-08/msg00013.html>:
--8<---------------cut here---------------start------------->8--- grafting '/gnu/store/i71kkrch1asnwvm0vm71w9aaza0n2m9q-icecat-52.1.0-gnu1' -> '/gnu/store/7w92kgcdcmf7lsc9nvs6b2ca7mk9422s-icecat-52.1.0-gnu1'... ERROR: In procedure put-bytevector: Wrong type argument in position 1 (expecting open output port): #<closed: file 8f1930> builder for `/gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv' failed with exit code 1 [...] ludo@ribbon ~/src/guix/+core-updates$ guix gc --clear-failures $(guix gc --list-failures) ludo@ribbon ~/src/guix/+core-updates$ guix build /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv La jena derivo estos konstruata: /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv @ build-started /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv - x86_64-linux /var/log/guix/drvs/3c//rrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv.bz2 grafting '/gnu/store/i71kkrch1asnwvm0vm71w9aaza0n2m9q-icecat-52.1.0-gnu1' -> '/gnu/store/7w92kgcdcmf7lsc9nvs6b2ca7mk9422s-icecat-52.1.0-gnu1'... ERROR: In procedure put-bytevector: Wrong type argument in position 1 (expecting open output port): #<closed: file 7517e0> builder for `/gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv' failed with exit code 1 @ build-failed /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv - 1 builder for `/gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv' failed with exit code 1 guix build: error: build failed: build of `/gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv' failed ludo@ribbon ~/src/guix/+core-updates$ guix gc --clear-failures $(guix gc --list-failures) ludo@ribbon ~/src/guix/+core-updates$ guix build /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv La jena derivo estos konstruata: /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv @ build-started /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv - x86_64-linux /var/log/guix/drvs/3c//rrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv.bz2 grafting '/gnu/store/i71kkrch1asnwvm0vm71w9aaza0n2m9q-icecat-52.1.0-gnu1' -> '/gnu/store/7w92kgcdcmf7lsc9nvs6b2ca7mk9422s-icecat-52.1.0-gnu1'... ERROR: In procedure variable-ref: Not a variable: (194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255) builder for `/gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv' failed with exit code 1 @ build-failed /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv - 1 builder for `/gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv' failed with exit code 1 --8<---------------cut here---------------end--------------->8--- The problem does not show up when running on a single thread: --8<---------------cut here---------------start------------->8--- guix build: error: build failed: build of `/gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv' failed ludo@ribbon ~/src/guix/+core-updates$ guix gc --clear-failures $(guix gc --list-failures) ludo@ribbon ~/src/guix/+core-updates$ guix build /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv --cores=1 La jena derivo estos konstruata: /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv @ build-started /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv - x86_64-linux /var/log/guix/drvs/3c//rrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv.bz2 grafting '/gnu/store/i71kkrch1asnwvm0vm71w9aaza0n2m9q-icecat-52.1.0-gnu1' -> '/gnu/store/7w92kgcdcmf7lsc9nvs6b2ca7mk9422s-icecat-52.1.0-gnu1'... @ build-succeeded /gnu/store/3crrls3ms9m3g860yvqib02rnm7akhf8-icecat-52.1.0-gnu1.drv - /gnu/store/7w92kgcdcmf7lsc9nvs6b2ca7mk9422s-icecat-52.1.0-gnu1 --8<---------------cut here---------------end--------------->8--- Ludo’.
