fix: Downgrade AWS SDK packages and crc-fast for Rust 1.87.0 compatibility

   The crc-fast crate version 1.6.0+ requires Rust features that are only
   available in Rust 1.88+. Additionally, several AWS SDK packages and the
   home crate released after May 2025 require Rust 1.88.0+. Since Rust
   1.88.0 is not yet available in the Nix rust-overlay, we downgrade to
   compatible versions:

   - aws-config: 1.8.10 → 1.8.0
   - aws-sdk-s3: 1.112.0 → 1.107.0
   - aws-sdk-sso: 1.89.0 → 1.86.0
   - aws-sdk-ssooidc: 1.91.0 → 1.88.0
   - aws-sdk-sts: 1.92.0 → 1.89.0
   - aws-smithy-checksums: 0.63.11 → 0.63.10
   - crc-fast: 1.6.0 → 1.3.0
   - home: 0.5.12 → 0.5.11

   This keeps Rust at 1.87.0 while avoiding the unstable feature error:
   error[E0658]: use of unstable library feature `stdarch_x86_avx512`

   Fixes the following CI failures:
   - coverage/ (Nix build failure)
   - publish-image/ (Docker image build failure)
   - asan-ubuntu-24/ (ASAN test failure)

Author: MarcusSorealheis

Cargo.lock

@@ -10,12 +10,9 @@ resolver = "2"
 [package]
 edition = "2024"
 name = "nativelink"
-rust-version = "1.88.0"
+rust-version = "1.87.0"
 version = "0.7.6"
 
-[package.metadata.cargo-machete]
-ignored = ["crc-fast"]
-
 [profile.release]
 lto = true
 
@@ -77,10 +74,6 @@ tonic = { version = "0.13.0", features = [
 tower = { version = "0.5.2", default-features = false }
 tracing = { version = "0.1.41", default-features = false }
 
-# Pin crc-fast to avoid unstable features in 1.6.0+
-# See: https://github.com/rust-lang/rust/issues/111137
-crc-fast = { version = "=1.3.0", default-features = false }
-
 [workspace.cargo-features-manager.keep]
 async-lock = ["std"]
 aws-sdk-s3 = ["rt-tokio"]

Cargo.toml

@@ -14,4 +14,4 @@ disallowed-methods = [
   { path = "tokio::task::spawn_blocking", reason = "use `nativelink-util::task::spawn_blocking` instead" },
   { path = "tokio::task::spawn_local", reason = "use one of the `nativelink-util::task` functions instead" },
 ]
-msrv = "1.88.0"
+msrv = "1.87.0"

clippy.toml

@@ -1,5 +1,5 @@
 let
-  defaultStableVersion = "1.88.0";
+  defaultStableVersion = "1.87.0";
   defaultNightlyVersion = "2025-05-21";
 in rec {
   # This map translates execution platforms to sensible targets that can