Problems for source package rust-tokio-util

BuildDepends

Package declares a build time dependency on librust-futures-sink-0.3+default-dev <!nocheck> which cannot be satisfied on armel. Package rust-tokio-util does not exist on armel.
Package declares a build time dependency on librust-futures-sink-0.3+default-dev <!nocheck> which cannot be satisfied on mips64el. Package rust-tokio-util does not exist on mips64el.
Package declares a build time dependency on librust-tokio-1+sync-dev (>= 1.28.0-~~) <!nocheck> which cannot be satisfied on armel. Package rust-tokio-util does not exist on armel.
Package declares a build time dependency on librust-tokio-1+sync-dev (>= 1.28.0-~~) <!nocheck> which cannot be satisfied on mips64el. Package rust-tokio-util does not exist on mips64el.
Package declares a build time dependency on librust-bytes-1+default-dev <!nocheck> which cannot be satisfied on mips64el. Package rust-tokio-util does not exist on mips64el.
Package declares a build time dependency on librust-bytes-1+default-dev <!nocheck> which cannot be satisfied on armel. Package rust-tokio-util does not exist on armel.
Package declares a build time dependency on librust-futures-core-0.3+default-dev <!nocheck> which cannot be satisfied on armel. Package rust-tokio-util does not exist on armel.
Package declares a build time dependency on librust-futures-core-0.3+default-dev <!nocheck> which cannot be satisfied on mips64el. Package rust-tokio-util does not exist on mips64el.
Package declares a build time dependency on libstd-rust-dev <!nocheck> which cannot be satisfied on mips64el. Package rust-tokio-util does not exist on mips64el.
Package declares a build time dependency on libstd-rust-dev <!nocheck> which cannot be satisfied on armel. Package rust-tokio-util does not exist on armel.
Package declares a build time dependency on librust-tokio-1+default-dev (>= 1.28.0-~~) <!nocheck> which cannot be satisfied on armel. Package rust-tokio-util does not exist on armel.
Package declares a build time dependency on librust-tokio-1+default-dev (>= 1.28.0-~~) <!nocheck> which cannot be satisfied on mips64el. Package rust-tokio-util does not exist on mips64el.
Package declares a build time dependency on librust-pin-project-lite-0.2+default-dev (>= 0.2.11-~~) <!nocheck> which cannot be satisfied on armel. Package rust-tokio-util does not exist on armel.
Package declares a build time dependency on librust-pin-project-lite-0.2+default-dev (>= 0.2.11-~~) <!nocheck> which cannot be satisfied on mips64el. Package rust-tokio-util does not exist on mips64el.
Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on armel. Package rust-tokio-util does not exist on armel.
Package declares a build time dependency on dh-cargo (>= 25) which cannot be satisfied on mips64el. Package rust-tokio-util does not exist on mips64el.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on mips64el. Package rust-tokio-util does not exist on mips64el.
Package declares a build time dependency on debhelper (>= 12) which cannot be satisfied on armel. Package rust-tokio-util 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.