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Set opt-level 1 for fast build profile (#16481) 

Test cases:

```
touch crates/uv-resolver/src/resolver/mod.rs && time cargo nextest run --cargo-profile dev --no-fail-fast -- --skip python_install
touch crates/uv-resolver/src/resolver/mod.rs && time cargo nextest run --cargo-profile fast-build --no-fail-fast -- --skip python_install
```

On my machine, we go from 7.x s (dev) to 8.x s (dev + opt-level 1) for
compilation, and 6.x s for the combined `fast-build` profile. With
opt-level 1, we go from 84s for the first line to 64s for the second
line.
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konsti 2025-10-28 13:31:18 +01:00 committed by GitHub
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Cargo.toml
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@ -314,6 +314,7 @@ lto = false
[profile.fast-build] [profile.fast-build]
inherits = "dev" inherits = "dev"
opt-level = 1
debug = 0 debug = 0
strip = "debuginfo" strip = "debuginfo"