Increased build time using cargo-near-build after #289 PR

[frolvanya]

Is it possible that this #289 PR increased building time? It runs slower on cargo-near-build v0.4.3 than on v0.4.3 + patching to the #292 PR

I have two workflow runs. The faster one was executed with

[patch.crates-io]
cargo-near-build = { git = "https://github.com/near/cargo-near", rev = "2851dc60945bb9da25b38bd46b3ba7b445db33d6" }

https://github.com/Near-One/omni-bridge/actions/runs/13063259194/job/36450815503
https://github.com/Near-One/omni-bridge/actions/runs/13063409784/job/36451266656

[frolvanya]

Additional context, I tried experimenting with patching and sscache:

rust-cache + cargo-near-build v0.4.3 without patching
cold – total duration 24mins, test duration 912s
warm – total duration 17mins, test duration 919s
Conclustion, while compilation time went down, test duration remains the same

sscache + cargo-near-build v0.4.3 without patching
cold – total duration 16mins, test duration 725s
warm – N/A

sscache + cargo-near-build v0.4.3 with patching
cold/warm (? I'm not sure, it says that cache was extracted, but all packages were recompiled) – total duration 10mins, test duration 478s

I was using this for patching for these tests:

[patch.crates-io]
cargo-near-build = { git = "https://github.com/dj8yfo/cargo-near", rev = "0fdf154175b6f62d6a3fee460dd43658aab68d53" }

[dj8yfo]

@frolvanya nope, not likely #289 introduced any additional time. It just unsets an env variable for a subprocess, the change should be on the scale of microseconds max.

I wouldn't rely on measuring time with gh actions executors performance. It differs from time to time even for identical code. It's like measuring length with rubber tape.
A set of a few runs on some local env without the unknowns of sscache would be more informative, at least with regard to measuring a difference of some patch introduced.

The annoying time addition is of wasm-opt-rs compiling.
I'll close this issue for now. Please reopen if you have an idea of what can be done to remedy this.