Hi, I stumbled upon this error while building the ‘guix’ channel for commit fee4afd84b772ce111629dd3ff7ff89636539859: --8<---------------cut here---------------start------------->8--- @ build-started /gnu/store/m7128g8wi8p529ifbqcbgpi0szvrwq8n-guix-cli.drv - x86_64-linux /var/log/guix/drvs/m7//128g8wi8p529ifbqcbgpi0szvrwq8n-guix-cli.drv.bz2 22747 [ 0/106] loading... 0.0% of 53 files [ 1/106] loading... 1.9% of 53 files [ 2/106] loading... 3.8% of 53 files [ 3/106] loading... 5.7% of 53 files [ 4/106] loading... 7.5% of 53 files [ 5/106] loading... 9.4% of 53 files [ 6/106] loading... 11.3% of 53 files [ 7/106] loading... 13.2% of 53 filesBacktrace: In ice-9/boot-9.scm: 222:29 19 (map1 (((gnu packages linux)) ((gnu packages man)) ((gnu packages nano)) ((gnu packages nvi)) ((gnu packages package-management)) ((gnu packages pciutils)) ((gnu packages texinfo)) # ?)) 222:29 18 (map1 (((gnu packages man)) ((gnu packages nano)) ((gnu packages nvi)) ((gnu packages package-management)) ((gnu packages pciutils)) ((gnu packages texinfo)) ((gnu packages zile)) # ?)) 222:29 17 (map1 (((gnu packages nano)) ((gnu packages nvi)) ((gnu packages package-management)) ((gnu packages pciutils)) ((gnu packages texinfo)) ((gnu packages zile)) ((gnu services)) ((?)) ?)) 222:29 16 (map1 (((gnu packages nvi)) ((gnu packages package-management)) ((gnu packages pciutils)) ((gnu packages texinfo)) ((gnu packages zile)) ((gnu services)) ((gnu services shepherd)) # ?)) 222:29 15 (map1 (((gnu packages package-management)) ((gnu packages pciutils)) ((gnu packages texinfo)) ((gnu packages zile)) ((gnu services)) ((gnu services shepherd)) ((gnu services base)) # ?)) 222:29 14 (map1 (((gnu packages pciutils)) ((gnu packages texinfo)) ((gnu packages zile)) ((gnu services)) ((gnu services shepherd)) ((gnu services base)) ((gnu bootloader)) ((gnu system #)) # ?)) 222:29 13 (map1 (((gnu packages texinfo)) ((gnu packages zile)) ((gnu services)) ((gnu services shepherd)) ((gnu services base)) ((gnu bootloader)) ((gnu system shadow)) ((gnu system nss)) (#) ?)) 222:29 12 (map1 (((gnu packages zile)) ((gnu services)) ((gnu services shepherd)) ((gnu services base)) ((gnu bootloader)) ((gnu system shadow)) ((gnu system nss)) ((gnu system locale)) ((?)) ?)) 222:29 11 (map1 (((gnu services)) ((gnu services shepherd)) ((gnu services base)) ((gnu bootloader)) ((gnu system shadow)) ((gnu system nss)) ((gnu system locale)) ((gnu system pam)) ((gnu ?)) ?)) 222:29 10 (map1 (((gnu services shepherd)) ((gnu services base)) ((gnu bootloader)) ((gnu system shadow)) ((gnu system nss)) ((gnu system locale)) ((gnu system pam)) ((gnu system #)) ((gnu ?)) ?)) 222:17 9 (map1 (((gnu services base)) ((gnu bootloader)) ((gnu system shadow)) ((gnu system nss)) ((gnu system locale)) ((gnu system pam)) ((gnu system linux-initrd)) ((gnu system uuid)) (#) ?)) 3297:17 8 (resolve-interface (gnu services base) #:select _ #:hide _ #:prefix _ #:renamer _ #:version _) In ice-9/threads.scm: 390:8 7 (_ _) In ice-9/boot-9.scm: 3223:13 6 (_) In ice-9/threads.scm: 390:8 5 (_ _) In ice-9/boot-9.scm: 3507:20 4 (_) 2806:4 3 (save-module-excursion #) 3527:26 2 (_) In unknown file: 1 (primitive-load-path "gnu/services/base" #) In gnu/services/base.scm: 1883:8 0 (_) gnu/services/base.scm:1883:8: In procedure allocate-struct: Wrong type argument in position 1 (expecting struct): # builder for `/gnu/store/m7128g8wi8p529ifbqcbgpi0szvrwq8n-guix-cli.drv' failed with exit code 1 @ build-failed /gnu/store/m7128g8wi8p529ifbqcbgpi0szvrwq8n-guix-cli.drv - 1 builder for `/gnu/store/m7128g8wi8p529ifbqcbgpi0szvrwq8n-guix-cli.drv' failed with exit code 1 cannot build derivation `/gnu/store/53ispcqx4wfqnfxbggxdi0h5bhm2i4n5-guix-cli-modules.drv': 1 dependencies couldn't be built cannot build derivation `/gnu/store/qlai4gy7gkdp7fpjwn94mig8mhfk7vvn-guix-system-tests.drv': 1 dependencies couldn't be built cannot build derivation `/gnu/store/s43p40z233ilnr1w0kbyx6y0fv6c63sr-guix-fee4afd84-modules.drv': 1 dependencies couldn't be built cannot build derivation `/gnu/store/fa6m8apnhg61q5vywq34rv20aiqaq1qx-guix-fee4afd84.drv': 1 dependencies couldn't be built cannot build derivation `/gnu/store/ah90pwc8xvand39j2z8zfxf2kkzzy6ay-profile.drv': 1 dependencies couldn't be built --8<---------------cut here---------------end--------------->8--- Looks like a GC/memory corruption/thread-safety issue—scary. Ludo’.