Problems for source package rust-ncurses

Malformed Build-Depends

Package declares a build time dependency on 'libstd-rust-dev <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-cc-1+default-dev (>= 1.0.18-~~) <!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-libc-0.2+default-dev <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'libncurses5-dev <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-pkg-config-0.3+default-dev <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'cargo:native <!nocheck>' which is broken Syntax.

Binary Package: librust-ncurses-dev (Version: 5.99.0-3)

Old Libraries

Package has a Depends on libncurses5-dev which is in Section oldlibs on i386.
Package has a Depends on libncurses5-dev which is in Section oldlibs on armhf.
Package has a Depends on libncurses5-dev which is in Section oldlibs on armel.
Package has a Depends on libncurses5-dev which is in Section oldlibs on ppc64el.
Package has a Depends on libncurses5-dev which is in Section oldlibs on mips64el.
Package has a Depends on libncurses5-dev which is in Section oldlibs on mipsel.
Package has a Depends on libncurses5-dev which is in Section oldlibs on arm64.
Package has a Depends on libncurses5-dev which is in Section oldlibs on amd64.
Package has a Depends on libncurses5-dev which is in Section oldlibs on s390x.