solana-faucet v3.1.x has incorrect solana-instruction version pin (=3.0.0 instead of =3.1.0)

[serejke]

Problem

Published solana-faucet versions 3.1.x on crates.io have an incorrect version pin for solana-instruction:

• Current: solana-instruction = "=3.0.0"
• Expected: solana-instruction = "=3.1.0"

This causes dependency resolution failures for downstream projects that use other solana crates from the 3.1.x release (which depend on solana-instruction ~3.1).

Error Example

error: failed to select a version for `solana-instruction`.
... required by package `solana-faucet v3.1.5`
... which satisfies dependency `solana-faucet = "=3.1.5"` of package `solana-rpc v3.1.5`

versions that meet the requirements `=3.0.0` are: 3.0.0

previously selected package `solana-instruction v3.1.0`
... which satisfies dependency `solana-instruction = "~3.1"` of package `downstream-crate`

Root Cause

• PR update solana-system-interface, cost model regression test #9341 accidentally relaxed version pins in solana-faucet
• PR pin solana-instruction version for solana-cli, solana-faucet and solana-keygen #9797 fixed this on master by re-pinning to =3.1.0
• The fix has not been backported to the v3.1 branch

Current state on v3.1 branch:

# faucet/Cargo.toml on origin/v3.1
solana-instruction = "=3.0.0"  # Should be "=3.1.0"

Requested Action

1. Backport PR pin solana-instruction version for solana-cli, solana-faucet and solana-keygen #9797 to the v3.1 branch
2. Publish a new solana-faucet version (3.1.7+) with the correct pin

Affected Crates

Per PR #9797, the same issue affects:

• solana-cli
• solana-faucet
• solana-keygen

All three should have the backport applied.

References

• Fix PR (on master): pin solana-instruction version for solana-cli, solana-faucet and solana-keygen #9797
• PR that introduced the regression: update solana-system-interface, cost model regression test #9341

[serejke]

cc @yihau - as the author of the fix in #9797, would you be able to create a backport to the v3.1 branch?

[yihau]

we published solana-faucet v3.1.6 two days ago. I'm not sure which issue you're referring to. could you please share a minimal reproducible example?