My cargo.config

config.toml

[env]

[profile.dev.package."*"]
opt-level = 2

[profile.dev.build-override]
opt-level = 2

[net]
git-fetch-with-cli = true

[unstable]
gc = true

[build]
rustflags = ["-C", "target-cpu=native"]

[profile.bench]
lto = "thin"

[target.x86_64-pc-windows-msvc]
linker = "rust-lld.exe"