rustpkg: Remove #[allow(vecs_implicitly_copyable)]
compiletest: Remove #[allow(vecs_implicitly_copyable)]
syntax: Remove #[allow(vecs_implicitly_copyable)]
rusti: Remove #[allow(vecs_implicitly_copyable)]
Remove vecs_implicitly_copyable from the compiler
Fix test fallout from removing vecs_implicitly_copyable