That's kinda an answer to a different question. The question you replied to was asking about other non-NP-hard systems and you replied with how much time your system took.
If you take a moment to read the linked comment, you will see that it describes how Cargo's selection algorithm is a simple heuristic that avoids NP-hardness. The subsequent timing example exists to demonstrate that the heuristic actually succeeds at avoiding pathological performance; Servo has more transitive dependencies than any known Rust project, and your development box is certainly more powerful than my $5 VPS.
> Yes, Rust's Cargo: https://github.com/rust-lang/cargo/blob/master/src/cargo/cor.... For comparison, on my low-end VPS Cargo takes less than a quarter second to select the versions of the 289 transitive dependencies used by Servo
That's kinda an answer to a different question. The question you replied to was asking about other non-NP-hard systems and you replied with how much time your system took.