Problems for source package rust-serde-json

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.

Binary Package: librust-serde-json-dev (Version: 1.0.128-1)

Half Broken Relationships

Package has a Depends on librust-indexmap-1+default-dev (>= 1.5.2-~~) which cannot be satisfied on armhf. At least one of librust-indexmap-2+default-dev | librust-indexmap-1+default-dev (>= 1.5.2-~~) can be satisfied however.
Package has a Depends on librust-indexmap-1+default-dev (>= 1.5.2-~~) which cannot be satisfied on s390x. At least one of librust-indexmap-2+default-dev | librust-indexmap-1+default-dev (>= 1.5.2-~~) can be satisfied however.
Package has a Depends on librust-indexmap-1+default-dev (>= 1.5.2-~~) which cannot be satisfied on armel. At least one of librust-indexmap-2+default-dev | librust-indexmap-1+default-dev (>= 1.5.2-~~) can be satisfied however.
Package has a Depends on librust-indexmap-1+default-dev (>= 1.5.2-~~) which cannot be satisfied on amd64. At least one of librust-indexmap-2+default-dev | librust-indexmap-1+default-dev (>= 1.5.2-~~) can be satisfied however.
Package has a Depends on librust-indexmap-1+default-dev (>= 1.5.2-~~) which cannot be satisfied on arm64. At least one of librust-indexmap-2+default-dev | librust-indexmap-1+default-dev (>= 1.5.2-~~) can be satisfied however.
Package has a Depends on librust-indexmap-1+default-dev (>= 1.5.2-~~) which cannot be satisfied on ppc64el. At least one of librust-indexmap-2+default-dev | librust-indexmap-1+default-dev (>= 1.5.2-~~) can be satisfied however.
Package has a Depends on librust-indexmap-1+default-dev (>= 1.5.2-~~) which cannot be satisfied on mips64el. At least one of librust-indexmap-2+default-dev | librust-indexmap-1+default-dev (>= 1.5.2-~~) can be satisfied however.
Package has a Depends on librust-indexmap-1+default-dev (>= 1.5.2-~~) which cannot be satisfied on i386. At least one of librust-indexmap-2+default-dev | librust-indexmap-1+default-dev (>= 1.5.2-~~) can be satisfied however.