Problems for source package rust-heck

BuildDepends

Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on armhf. Package rust-heck does not exist on armhf.
Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on armel. Package rust-heck does not exist on armel.
Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on amd64. Package rust-heck does not exist on amd64.
Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on arm64. Package rust-heck does not exist on arm64.
Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on s390x. Package rust-heck does not exist on s390x.
Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on ppc64el. Package rust-heck does not exist on ppc64el.
Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on mips64el. Package rust-heck does not exist on mips64el.
Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on i386. Package rust-heck does not exist on i386.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on i386. Package rust-heck does not exist on i386.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on s390x. Package rust-heck does not exist on s390x.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on mips64el. Package rust-heck does not exist on mips64el.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on ppc64el. Package rust-heck does not exist on ppc64el.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on amd64. Package rust-heck does not exist on amd64.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on arm64. Package rust-heck does not exist on arm64.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on armhf. Package rust-heck does not exist on armhf.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on armel. Package rust-heck does not exist on armel.

Malformed Build-Depends

Package declares a build time dependency on 'cargo:native <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'rustc:native (>= 1.56) <!nocheck>' which is broken Syntax.