Bug#1109577: lintian: Please check for missing (Static-)Built-Using for rust-using packages

[Chris Hofstädtler <zeha@debian.org>]

Source: lintian
Version: 2.122.0
Severity: normal
X-Debbugs-Cc: debian-rust@lists.debian.org

Hi,

packages Build-Depending on rustc should most likely emit 
Built-Using and Static-Built-Using fields into at least one binary 
package.

If these fields are absent or are missing the "rustc" source package,
it would be great if lintian could flag this as an error.

For clarification, both Built-Using and Static-Built-Using should 
have the "rustc" source package listed.

Best,
Chris