Swag init can't parse struct but no error message

[fivemeepo]

Describe the bug

type Example struct {
   Status         uint32 `json:"status" example:"true"`
}

swag init can't parse this struct, but it prints success.

To Reproduce

1. install swag 1.6.5

export GO111MODULE=off
go get -d -u github.com/swaggo/swag/cmd/swag
cd "$(go env GOPATH)"/src/github.com/swaggo/swag
make
cp swag "$(go env GOPATH)"/bin/

2. swag init
3. Check docs/docs.go

Expected behavior
I expect to see some error message when I run swag init

Screenshots

Your swag version
1.6.5

Your go version
1.13.4

Desktop (please complete the following information):

• OS: MacOS
• Browser: chrome
• Version: 10.14.3

Additional context
The reason is in my struct, the type of the field status is uint32, but I use a wrong example true which caused that issue.

[sdghchj]

will report error next PR