Problems for source package rust-num-bigint

Malformed Build-Depends

Package declares a build time dependency on 'librust-num-integer-0.1+std-dev (>= 0.1.42-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-autocfg-1+default-dev <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-num-traits-0.2+std-dev (>= 0.2.11-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'rustc:native <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-num-traits-0.2-dev (>= 0.2.11-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'cargo:native <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'libstd-rust-dev <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-num-integer-0.1-dev (>= 0.1.42-~~) <!nocheck>' which is broken Syntax.

Binary Package: librust-num-bigint+quickcheck-macros-dev (Version: 0.2.6-1)

Relationships

Package has a Depends on librust-quickcheck-macros-0.8-dev which cannot be satisfied on armel.
Package has a Depends on librust-quickcheck-macros-0.8-dev which cannot be satisfied on s390x.
Package has a Depends on librust-quickcheck-macros-0.8-dev which cannot be satisfied on i386.
Package has a Depends on librust-quickcheck-macros-0.8-dev which cannot be satisfied on ppc64el.
Package has a Depends on librust-quickcheck-macros-0.8-dev which cannot be satisfied on arm64.
Package has a Depends on librust-quickcheck-macros-0.8-dev which cannot be satisfied on amd64.
Package has a Depends on librust-quickcheck-macros-0.8-dev which cannot be satisfied on armhf.
Package has a Depends on librust-quickcheck-macros-0.8-dev which cannot be satisfied on mips64el.
Package has a Depends on librust-quickcheck-macros-0.8-dev which cannot be satisfied on mipsel.