go-licenses check main.go
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x38 pc=0x92f859]

goroutine 1 [running]:
github.com/google/go-licenses/licenses.Libraries.func1(0xc009f34140)
/home/ubuntu/work/pkg/mod/github.com/google/go-licenses@v1.1.0/licenses/library.go:100 +0x259
golang.org/x/tools/go/packages.Visit.func1(0xc009f34140)
/home/ubuntu/work/pkg/mod/golang.org/x/tools@v0.1.10/go/packages/visit.go:26 +0xaa
golang.org/x/tools/go/packages.Visit({0xc003ea5b50, 0x1, 0x1?}, 0xc009d1b850, 0x0)
/home/ubuntu/work/pkg/mod/golang.org/x/tools@v0.1.10/go/packages/visit.go:43 +0x10e
github.com/google/go-licenses/licenses.Libraries({0x134b2a8?, 0xc00011c000?}, {0x1344960, 0xc003ea55a8}, {0xc0002b0ce0?, 0xc00035fd68?, 0xc00035fd90?})
/home/ubuntu/work/pkg/mod/github.com/google/go-licenses@v1.1.0/licenses/library.go:76 +0x22c
main.checkMain(0x16d44e0?, {0xc0002b0ce0, 0x1, 0x1})
/home/ubuntu/work/pkg/mod/github.com/google/go-licenses@v1.1.0/check.go:47 +0x8e
github.com/spf13/cobra.(*Command).execute(0x16d44e0, {0xc0002b0cc0, 0x1, 0x1})
/home/ubuntu/work/pkg/mod/github.com/spf13/cobra@v1.4.0/command.go:856 +0x67c
github.com/spf13/cobra.(*Command).ExecuteC(0x16d4260)
/home/ubuntu/work/pkg/mod/github.com/spf13/cobra@v1.4.0/command.go:974 +0x3b4
github.com/spf13/cobra.(*Command).Execute(...)
/home/ubuntu/work/pkg/mod/github.com/spf13/cobra@v1.4.0/command.go:902
main.main()
/home/ubuntu/work/pkg/mod/github.com/google/go-licenses@v1.1.0/main.go:72 +0x85