Problems for source package rust-async-dup

BuildDepends

Package declares a build time dependency on libstd-rust-dev <!nocheck> which cannot be satisfied on mips64el. Package rust-async-dup does not exist on mips64el.
Package declares a build time dependency on libstd-rust-dev <!nocheck> which cannot be satisfied on armel. Package rust-async-dup does not exist on armel.
Package declares a build time dependency on librust-async-lock-3+default-dev (>= 3.1.0-~~) <!nocheck> which cannot be satisfied on mips64el. Package rust-async-dup does not exist on mips64el.
Package declares a build time dependency on librust-async-lock-3+default-dev (>= 3.1.0-~~) <!nocheck> which cannot be satisfied on armel. Package rust-async-dup does not exist on armel.
Package declares a build time dependency on librust-futures-io-0.3+default-dev (>= 0.3.5-~~) <!nocheck> which cannot be satisfied on mips64el. Package rust-async-dup does not exist on mips64el.
Package declares a build time dependency on librust-futures-io-0.3+default-dev (>= 0.3.5-~~) <!nocheck> which cannot be satisfied on armel. Package rust-async-dup does not exist on armel.
Package declares a build time dependency on debhelper-compat (= 13) which cannot be satisfied on armel. Package rust-async-dup does not exist on armel.
Package declares a build time dependency on debhelper-compat (= 13) which cannot be satisfied on mips64el. Package rust-async-dup does not exist on mips64el.
Package declares a build time dependency on dh-sequence-cargo which cannot be satisfied on armel. Package rust-async-dup does not exist on armel.
Package declares a build time dependency on dh-sequence-cargo which cannot be satisfied on mips64el. Package rust-async-dup does not exist on mips64el.

Malformed Build-Depends

Package declares a build time dependency on 'rustc:native (>= 1.59) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'cargo:native <!nocheck>' which is broken Syntax.