Problems for source package rust-serde-derive

Malformed Build-Depends

Package declares a build time dependency on 'librust-proc-macro2-0.4+default-dev ' which is broken Syntax.
Package declares a build time dependency on 'librust-quote-0.6+default-dev (>= 0.6.3-~~) ' which is broken Syntax.
Package declares a build time dependency on 'rustc:native ' which is broken Syntax.
Package declares a build time dependency on 'cargo:native ' which is broken Syntax.
Package declares a build time dependency on 'librust-syn-0.15+default-dev (>= 0.15.22-~~) ' which is broken Syntax.
Package declares a build time dependency on 'librust-syn-0.15+visit-dev (>= 0.15.22-~~) ' which is broken Syntax.
Package declares a build time dependency on 'libstd-rust-dev ' which is broken Syntax.

Binary Package: librust-serde-derive-dev (Version: 1.0.98-1)

Relationships

Package has a Depends on librust-syn-0.15+visit-dev (>= 0.15.22-~~) which cannot be satisfied on mips64el.
Package has a Depends on librust-syn-0.15+visit-dev (>= 0.15.22-~~) which cannot be satisfied on i386.
Package has a Depends on librust-syn-0.15+visit-dev (>= 0.15.22-~~) which cannot be satisfied on amd64.
Package has a Depends on librust-syn-0.15+visit-dev (>= 0.15.22-~~) which cannot be satisfied on armel.
Package has a Depends on librust-syn-0.15+visit-dev (>= 0.15.22-~~) which cannot be satisfied on s390x.
Package has a Depends on librust-syn-0.15+visit-dev (>= 0.15.22-~~) which cannot be satisfied on armhf.
Package has a Depends on librust-syn-0.15+visit-dev (>= 0.15.22-~~) which cannot be satisfied on ppc64el.
Package has a Depends on librust-syn-0.15+visit-dev (>= 0.15.22-~~) which cannot be satisfied on mipsel.
Package has a Depends on librust-syn-0.15+visit-dev (>= 0.15.22-~~) which cannot be satisfied on arm64.
Package has a Depends on librust-quote-0.6+default-dev (>= 0.6.3-~~) which cannot be satisfied on armhf.
Package has a Depends on librust-quote-0.6+default-dev (>= 0.6.3-~~) which cannot be satisfied on s390x.
Package has a Depends on librust-quote-0.6+default-dev (>= 0.6.3-~~) which cannot be satisfied on amd64.
Package has a Depends on librust-quote-0.6+default-dev (>= 0.6.3-~~) which cannot be satisfied on armel.
Package has a Depends on librust-quote-0.6+default-dev (>= 0.6.3-~~) which cannot be satisfied on i386.
Package has a Depends on librust-quote-0.6+default-dev (>= 0.6.3-~~) which cannot be satisfied on mips64el.
Package has a Depends on librust-quote-0.6+default-dev (>= 0.6.3-~~) which cannot be satisfied on arm64.
Package has a Depends on librust-quote-0.6+default-dev (>= 0.6.3-~~) which cannot be satisfied on mipsel.
Package has a Depends on librust-quote-0.6+default-dev (>= 0.6.3-~~) which cannot be satisfied on ppc64el.
Package has a Depends on librust-proc-macro2-0.4+default-dev which cannot be satisfied on mipsel.
Package has a Depends on librust-proc-macro2-0.4+default-dev which cannot be satisfied on arm64.
Package has a Depends on librust-proc-macro2-0.4+default-dev which cannot be satisfied on ppc64el.
Package has a Depends on librust-proc-macro2-0.4+default-dev which cannot be satisfied on armhf.
Package has a Depends on librust-proc-macro2-0.4+default-dev which cannot be satisfied on mips64el.
Package has a Depends on librust-proc-macro2-0.4+default-dev which cannot be satisfied on armel.
Package has a Depends on librust-proc-macro2-0.4+default-dev which cannot be satisfied on amd64.
Package has a Depends on librust-proc-macro2-0.4+default-dev which cannot be satisfied on i386.
Package has a Depends on librust-proc-macro2-0.4+default-dev which cannot be satisfied on s390x.
Package has a Depends on librust-syn-0.15+default-dev (>= 0.15.22-~~) which cannot be satisfied on armhf.
Package has a Depends on librust-syn-0.15+default-dev (>= 0.15.22-~~) which cannot be satisfied on s390x.
Package has a Depends on librust-syn-0.15+default-dev (>= 0.15.22-~~) which cannot be satisfied on mips64el.
Package has a Depends on librust-syn-0.15+default-dev (>= 0.15.22-~~) which cannot be satisfied on i386.
Package has a Depends on librust-syn-0.15+default-dev (>= 0.15.22-~~) which cannot be satisfied on amd64.
Package has a Depends on librust-syn-0.15+default-dev (>= 0.15.22-~~) which cannot be satisfied on armel.
Package has a Depends on librust-syn-0.15+default-dev (>= 0.15.22-~~) which cannot be satisfied on arm64.
Package has a Depends on librust-syn-0.15+default-dev (>= 0.15.22-~~) which cannot be satisfied on mipsel.
Package has a Depends on librust-syn-0.15+default-dev (>= 0.15.22-~~) which cannot be satisfied on ppc64el.