Panic in hasher when mounting with vfs-cache and not synced data in the cache

The binary is build by Gentoo portage and is the official Gentoo package.
Gentoo Linux is source based distribution and everything is compiled locally.

Anyway this is the output of the official release:

# ~/rclone-official -vv  --transfers=8   --cache-dir=/storage/hot/rclone-cache/ --vfs-cache-mode full  --config ~/.config/rclone/blomp.conf mount blomp-arch-hash:/final-backup/ remote
2022/03/11 23:58:52 DEBUG : rclone: Version "v1.57.0" starting with parameters ["/root/rclone-official" "-vv" "--transfers=8" "--cache-dir=/storage/hot/rclone-cache/" "--vfs-cache-mode" "full" "--config" "/root/.config/rclone/blomp.conf" "mount" "blomp-arch-hash:/final-backup/" "remote"]
2022/03/11 23:58:52 DEBUG : Creating backend with remote "blomp-arch-hash:/final-backup/"
2022/03/11 23:58:52 DEBUG : Using config file from "/root/.config/rclone/blomp.conf"
2022/03/11 23:58:52 INFO  : Hasher is EXPERIMENTAL!
2022/03/11 23:58:52 DEBUG : Creating backend with remote "blomp-arch:/final-backup"
2022/03/11 23:58:52 DEBUG : Creating backend with remote "blomp-remote:CENSORED/arch/final-backup.json"
2022/03/11 23:58:58 DEBUG : Creating backend with remote "blomp-remote:CENSORED/arch/final-backup"
2022/03/11 23:59:00 DEBUG : hasher::blomp-arch-hash:/final-backup/: Groups by usage: cached [md5, sha1, sha256], passed [md5], auto [md5, sha1, sha256], slow [], supported [md5, sha1, sha256]
2022/03/11 23:59:00 DEBUG : blomp-arch~hasher.bolt: Opened for reading in 53.282┬Ás
2022/03/11 23:59:00 INFO  : hasher::blomp-arch-hash:/final-backup/: poll-interval is not supported by this remote
2022/03/11 23:59:00 DEBUG : vfs cache: root is "/storage/hot/rclone-cache"
2022/03/11 23:59:00 DEBUG : vfs cache: data root is "/storage/hot/rclone-cache/vfs/blomp-arch-hash/final-backup"
2022/03/11 23:59:00 DEBUG : vfs cache: metadata root is "/storage/hot/rclone-cache/vfsMeta/blomp-arch-hash/final-backup"
2022/03/11 23:59:00 DEBUG : Creating backend with remote "/storage/hot/rclone-cache/vfs/blomp-arch-hash//final-backup/"
2022/03/11 23:59:00 DEBUG : Creating backend with remote "/storage/hot/rclone-cache/vfsMeta/blomp-arch-hash//final-backup/"
2022/03/11 23:59:00 DEBUG : blomp-arch~hasher.bolt: released
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0xdbb780]

goroutine 1 [running]:
github.com/rclone/rclone/backend/hasher.(*Object).Fs(0x15f26aa)
        github.com/rclone/rclone/backend/hasher/hasher.go:435
github.com/rclone/rclone/fs.Fingerprint({0x1e6bfe8, 0xc000128008}, {0x7f93e082f690, 0x0}, 0x0)
        github.com/rclone/rclone/fs/fingerprint.go:24 +0x7d
github.com/rclone/rclone/vfs/vfscache.(*Item)._checkObject(0xc00071c460, {0x1e9f8c8, 0x0})
        github.com/rclone/rclone/vfs/vfscache/item.go:787 +0xe9
github.com/rclone/rclone/vfs/vfscache.(*Item).open(0xc00071c460, {0x1e9f8c8, 0x0})
        github.com/rclone/rclone/vfs/vfscache/item.go:519 +0x130
github.com/rclone/rclone/vfs/vfscache.(*Item).Open(0xc00071c460, {0x1e9f8c8, 0x0})
        github.com/rclone/rclone/vfs/vfscache/item.go:490 +0xab
github.com/rclone/rclone/vfs/vfscache.(*Item).reload(0xc00071c460, {0x1e6bfb0, 0xc000802180})
        github.com/rclone/rclone/vfs/vfscache/item.go:742 +0xdc
github.com/rclone/rclone/vfs/vfscache.(*Cache).reload.func1({0xc00014b900, 0x3a}, {0x1e79bb0, 0xc0004a7110}, {0xc0009b4edb, 0x17})
        github.com/rclone/rclone/vfs/vfscache/cache.go:506 +0x9c
github.com/rclone/rclone/vfs/vfscache.(*Cache).walk.func1({0xc0009b4ea0, 0x52}, {0x1e79bb0, 0xc0004a7110}, {0x0, 0x0})
        github.com/rclone/rclone/vfs/vfscache/cache.go:489 +0xac
path/filepath.walk({0xc0009b4ea0, 0x52}, {0x1e79bb0, 0xc0004a7110}, 0xc000b07928)
        path/filepath/path.go:418 +0x125
path/filepath.walk({0xc000718f00, 0x4f}, {0x1e79bb0, 0xc0004a6750}, 0xc000b07928)
        path/filepath/path.go:442 +0x28f
path/filepath.walk({0xc0007184b0, 0x4c}, {0x1e79bb0, 0xc000336b60}, 0xc000b07928)
        path/filepath/path.go:442 +0x28f
path/filepath.walk({0xc0007183c0, 0x49}, {0x1e79bb0, 0xc0003121a0}, 0xc000b07928)
        path/filepath/path.go:442 +0x28f
path/filepath.walk({0xc0007182d0, 0x46}, {0x1e79bb0, 0xc0002e1ee0}, 0xc000b07928)
        path/filepath/path.go:442 +0x28f
path/filepath.walk({0xc0007181e0, 0x43}, {0x1e79bb0, 0xc0002e1a00}, 0xc000b07928)
        path/filepath/path.go:442 +0x28f
path/filepath.walk({0xc00014bf00, 0x40}, {0x1e79bb0, 0xc0003851e0}, 0xc000b07928)
        path/filepath/path.go:442 +0x28f
path/filepath.walk({0xc00014bd40, 0x3d}, {0x1e79bb0, 0xc000384b60}, 0xc000b07928)
        path/filepath/path.go:442 +0x28f
path/filepath.walk({0xc00014b900, 0x3a}, {0x1e79bb0, 0xc000384a90}, 0xc000b07928)
        path/filepath/path.go:442 +0x28f
path/filepath.Walk({0xc00014b900, 0x3a}, 0xc000b07928)
        path/filepath/path.go:505 +0x6c
github.com/rclone/rclone/vfs/vfscache.(*Cache).walk(0x30, {0xc00014b900, 0xc000b079e8}, 0x40ce34)
        github.com/rclone/rclone/vfs/vfscache/cache.go:474 +0x5c
github.com/rclone/rclone/vfs/vfscache.(*Cache).reload(0xc0005ee540, {0x1e6bfb0, 0xc000802180})
        github.com/rclone/rclone/vfs/vfscache/cache.go:500 +0x10f
github.com/rclone/rclone/vfs/vfscache.New({0x1e6bfb0, 0xc000802180}, {0x1e9f858, 0xc0005de090}, 0xc0002f6888, 0xc000208730)
        github.com/rclone/rclone/vfs/vfscache/cache.go:131 +0x56d
github.com/rclone/rclone/vfs.(*VFS).SetCacheMode(0xc0002f6870, 0x3)
        github.com/rclone/rclone/vfs/vfs.go:269 +0x134
github.com/rclone/rclone/vfs.New({0x1e9f858, 0xc0005de090}, 0xc0005da200)
        github.com/rclone/rclone/vfs/vfs.go:234 +0x5d9
github.com/rclone/rclone/cmd/mountlib.(*MountPoint).Mount(0xc0005da160)
        github.com/rclone/rclone/cmd/mountlib/mount.go:247 +0xc7
github.com/rclone/rclone/cmd/mountlib.NewMountCommand.func1(0xc0003d1400, {0xc00048fcb0, 0x9, 0xe})
        github.com/rclone/rclone/cmd/mountlib/mount.go:176 +0x278
github.com/spf13/cobra.(*Command).execute(0xc0003d1400, {0xc00042e1c0, 0x9, 0xe})
        github.com/spf13/cobra@v1.2.1/command.go:860 +0x5f8
github.com/spf13/cobra.(*Command).ExecuteC(0x2bdede0)
        github.com/spf13/cobra@v1.2.1/command.go:974 +0x3bc
github.com/spf13/cobra.(*Command).Execute(...)
        github.com/spf13/cobra@v1.2.1/command.go:902
github.com/rclone/rclone/cmd.Main()
        github.com/rclone/rclone/cmd/cmd.go:555 +0x76
main.main()
        github.com/rclone/rclone/rclone.go:14 +0x17