Problems for source package rust-regex

Malformed Build-Depends

Package declares a build time dependency on 'librust-regex-syntax-0.6+unicode-segment-dev (>= 0.6.17-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-thread-local-1+default-dev <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-regex-syntax-0.6+unicode-perl-dev (>= 0.6.17-~~) <!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 'rustc:native <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-aho-corasick-0.7+default-dev (>= 0.7.6-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-regex-syntax-0.6+unicode-gencat-dev (>= 0.6.17-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-regex-syntax-0.6+unicode-age-dev (>= 0.6.17-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-regex-syntax-0.6+unicode-case-dev (>= 0.6.17-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-regex-syntax-0.6+unicode-script-dev (>= 0.6.17-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-regex-syntax-0.6+unicode-bool-dev (>= 0.6.17-~~) <!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-memchr-2+default-dev (>= 2.2.1-~~) <!nocheck>' which is broken Syntax.
Package declares a build time dependency on 'librust-regex-syntax-0.6-dev (>= 0.6.17-~~) <!nocheck>' which is broken Syntax.