[v1.0.1] panic in bbolt.(*Bucket).Cursor(...) when running analyze

[AwesomePatrol]

For command auger analyze -f db encountered a panic:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0xa4a6a5]

goroutine 1 [running]:
go.etcd.io/bbolt.(*Bucket).Cursor(...)
	/root/go/pkg/mod/go.etcd.io/bbolt@v1.3.11/bucket.go:84
github.com/etcd-io/auger/pkg/data.walk.func1(0x400000?)
	/root/go/pkg/mod/github.com/etcd-io/auger@v1.0.1/pkg/data/data.go:413 +0x45
go.etcd.io/bbolt.(*DB).View(0x2066f40?, 0xc000175608)
	/root/go/pkg/mod/go.etcd.io/bbolt@v1.3.11/db.go:917 +0x6c
github.com/etcd-io/auger/pkg/data.walk(0x7ffd5eb3de6d?, 0x2c?)
	/root/go/pkg/mod/github.com/etcd-io/auger@v1.0.1/pkg/data/data.go:411 +0x29
github.com/etcd-io/auger/pkg/data.ListKeySummaries({0xc00027e9a0, {0x16687c0, 0xc000013098}, {0xc00027c8c0, 0x3, 0x4}, {0x166ffd0, 0xc0001333b0}}, {0x7ffd5eb3de6d, 0x2c}, ...)
	/root/go/pkg/mod/github.com/etcd-io/auger@v1.0.1/pkg/data/data.go:221 +0x475
github.com/etcd-io/auger/cmd.analyzeValidateAndRun()
	/root/go/pkg/mod/github.com/etcd-io/auger@v1.0.1/cmd/analyze.go:48 +0x99
github.com/etcd-io/auger/cmd.init.func1(0xc000208800?, {0x14521f2?, 0x4?, 0x145210a?})
	/root/go/pkg/mod/github.com/etcd-io/auger@v1.0.1/cmd/analyze.go:32 +0xf
github.com/spf13/cobra.(*Command).execute(0x20510e0, {0xc0003f74e0, 0x2, 0x2})
	/root/go/pkg/mod/github.com/spf13/cobra@v1.8.1/command.go:985 +0xaaa
github.com/spf13/cobra.(*Command).ExecuteC(0x2051f40)
	/root/go/pkg/mod/github.com/spf13/cobra@v1.8.1/command.go:1117 +0x3ff
github.com/spf13/cobra.(*Command).Execute(...)
	/root/go/pkg/mod/github.com/spf13/cobra@v1.8.1/command.go:1041
main.main()
	/root/go/pkg/mod/github.com/etcd-io/auger@v1.0.1/main.go:26 +0x1a

Unfortunately I can't provide DB file or retry with a different auger version, so this is more of "FYI"