this derivation will be built:
  /nix/store/nikkvbi9s34ibhc6l74agy6ymf4wraxv-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/nikkvbi9s34ibhc6l74agy6ymf4wraxv-bcachefs-module-7.0.0-30-generic.drv'...
error: Cannot build '/nix/store/nikkvbi9s34ibhc6l74agy6ymf4wraxv-bcachefs-module-7.0.0-30-generic.drv'.
       Reason: builder failed with exit code 2.
       Output paths:
         /nix/store/v92kggdc6fxllyq01174fa2j7a3viwjw-bcachefs-module-7.0.0-30-generic
       Last 25 log lines:
       > src/fs/bcachefs/util/util.c: In function 'bch2_time_stats_json_to_text':
       > src/fs/bcachefs/util/util.c:498:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=]
       >   498 | }
       >       | ^
       >   CC [M]  src/fs/bcachefs/vfs/fiemap.o
       >   CC [M]  src/fs/bcachefs/vfs/fs.o
       >   CC [M]  src/fs/bcachefs/vfs/ioctl.o
       >   CC [M]  src/fs/bcachefs/vfs/io.o
       > src/fs/bcachefs/vfs/fs.c: In function 'bch2_vfs_readdir':
       > src/fs/bcachefs/vfs/fs.c:1637:46: error: initialization of 'bool (*)(struct dir_context *, const char *, int,  loff_t,  u64,  unsigned int)' {aka '_Bool (*)(struct dir_context *, const char *, int,  long long int,  long long unsigned int,  unsigned int)'} from incompatible pointer type 'bch2_filldir_ret_t (*)(struct dir_context *, const char *, int,  loff_t,  u64,  unsigned int)' {aka 'int (*)(struct dir_context *, const char *, int,  long long int,  long long unsigned int,  unsigned int)'} [-Wincompatible-pointer-types]
       >  1637 |                         .ctx    = { .actor = bch2_readdir_emit32, .pos = start, },
       >       |                                              ^~~~~~~~~~~~~~~~~~~
       > src/fs/bcachefs/vfs/fs.c:1637:46: note: (near initialization for 'ctx32.ctx.actor')
       > src/fs/bcachefs/vfs/fs.c:1576:27: note: 'bch2_readdir_emit32' declared here
       >  1576 | static bch2_filldir_ret_t bch2_readdir_emit32(struct dir_context *ctx,
       >       |                           ^~~~~~~~~~~~~~~~~~~
       > make[5]: *** [/build/bcachefs-dkms-src/kdir/headers/linux-headers-7.0.0-30-generic/scripts/Makefile.build:289: src/fs/bcachefs/vfs/fs.o] Error 1
       > make[5]: *** Waiting for unfinished jobs....
       > make[4]: *** [/build/bcachefs-dkms-src/kdir/headers/linux-headers-7.0.0-30-generic/scripts/Makefile.build:548: src/fs/bcachefs] Error 2
       > make[3]: *** [/build/bcachefs-dkms-src/kdir/headers/linux-headers-7.0.0-30-generic/Makefile:2115: .] Error 2
       > make[2]: *** [/build/bcachefs-dkms-src/kdir/headers/linux-headers-7.0.0-30-generic/Makefile:248: __sub-make] Error 2
       > make[2]: Leaving directory '/build/bcachefs-dkms-src'
       > make[1]: *** [Makefile:248: __sub-make] Error 2
       > make[1]: Leaving directory '/build/bcachefs-dkms-src/kdir/headers/linux-headers-7.0.0-30-generic'
       > make: *** [Makefile:18: default] Error 2
       For full logs, run:
         nix log /nix/store/nikkvbi9s34ibhc6l74agy6ymf4wraxv-bcachefs-module-7.0.0-30-generic.drv