Build failure: p256/p384 v0.14.0-rc.8 incompatible with elliptic-curve v0.14.0-rc.31

[L-jasmine]

Problem

When depending on `rustls-rustcrypto`, the build fails due to incompatible version constraints in the dependency tree:

Error:
```
error[E0277]: the trait bound `for<'a> primeorder::AffinePoint: MulVartime<&'a Scalar>` is not satisfied
--> p256-0.14.0-rc.8/src/arithmetic.rs:24:24
```

Root Cause

The dependency chain pulls incompatible versions:

• `rustls-rustcrypto` → `ecdsa v0.17.0-rc.17` → `elliptic-curve v0.14.0-rc.31`
• `rustls-rustcrypto` → `p256 v0.14.0-rc.8` (requires `elliptic-curve` v0.14.0-rc.29 API)

`p256 v0.14.0-rc.8` and `p384 v0.14.0-rc.8` were released against `elliptic-curve v0.14.0-rc.29`, but `ecdsa v0.17.0-rc.17` pulls `elliptic-curve v0.14.0-rc.31` which has breaking API changes.

Working Configuration

Using `ecdsa v0.17.0-rc.16` (which pulls `elliptic-curve v0.14.0-rc.29`) works correctly.

Dependency Tree (failing)

```
elliptic-curve v0.14.0-rc.31
├── ecdsa v0.17.0-rc.17
│ ├── p256 v0.14.0-rc.8 ← incompatible with rc.31
│ └── p384 v0.14.0-rc.8 ← incompatible with rc.31
```

Suggested Fix

1. Pin `ecdsa` to `0.17.0-rc.16` in `Cargo.toml` until `p256`/`p384` are updated
2. Or update `p256`/`p384` to versions compatible with `elliptic-curve` rc.31

Environment

• Rust: 1.77+
• Commit: `aecee37208823f6a4ffabeb7c0a1227015b131cb`

[L-jasmine]

Workaround found:

Adding this to Cargo.toml fixes the build:

elliptic-curve = { version = "=0.14.0-rc.29", default-features = false }

This pins elliptic-curve to the version compatible with p256/p384 rc.8.

[tarcieri]

Sorry about that. I'll be publishing new versions of p256, p384, and others shortly