ci: Switch to Swatinem/rust-cache@v2 (#1113)

Fixed #1038

sccache is not very effective at caching dependencies, the external
C/C++ is recompiled in every ci and it takes a lot of time.

Compilation of other Rust dependencies also takes quite some time and
sccache is not helping at all, so I decided to switch to
`Swatinem/rust-cache@v2`.

The downside of the new caching method is that a new cache conntaining
part of the `.cargo/` and `target/` will be created whenver
`Cargo.lock`/`Cargo.toml` changes, but it can still reuse the old cache
to create new caching.

This is acceptable given that `sccache` often fails to reuse
cache due to rate limiting from GHA, since it is not designed for use
like a s3 object pool, and `sccache` will create a lot of new cache
artifacts for a given branch that cannot be reused in main and would
have to cleanup via a cronjob.

Edit:

rust 1.70 uses llvm 16.0, however ubuntu-latest still uses llvm 15.0
As such, during release-build, cross-lang-lto failed due to llvm is too
old.

Temporarily disable linker-plugin-lto to fix this.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

.github/workflows/ci.yml

@@ -47,8 +47,6 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - uses: ./.github/actions/just-setup
-      with:
-        cache-suffix: ${{ env.CARGO_BUILD_TARGET }}
       env:
         # just-setup use binstall to install sccache,
         # which works better when we provide it with GITHUB_TOKEN.
@@ -78,8 +76,6 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - uses: ./.github/actions/just-setup
-      with:
-        cache-suffix: ${{ env.CARGO_BUILD_TARGET }}
       env:
         # just-setup use binstall to install sccache,
         # which works better when we provide it with GITHUB_TOKEN.
@@ -97,8 +93,6 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - uses: ./.github/actions/just-setup
-      with:
-        cache-suffix: ${{ env.CARGO_BUILD_TARGET }}
       env:
         # just-setup use binstall to install sccache,
         # which works better when we provide it with GITHUB_TOKEN.
@@ -115,8 +109,6 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - uses: ./.github/actions/just-setup
-      with:
-        cache-suffix: ${{ env.CARGO_BUILD_TARGET }}
       env:
         # just-setup use binstall to install sccache,
         # which works better when we provide it with GITHUB_TOKEN.
@@ -141,8 +133,6 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - uses: ./.github/actions/just-setup
-      with:
-        cache-suffix: ${{ matrix.target }}
 
     - run: just toolchain rustfmt,clippy
     - run: just ci-install-deps

.github/workflows/release-build.yml

@@ -52,7 +52,6 @@ jobs:
     - uses: actions/checkout@v3
     - uses: ./.github/actions/just-setup
       with:
-        cache-suffix: release-${{ matrix.t }}
         tools: cargo-auditable
       env:
         # just-setup use binstall to install sccache and cargo-auditable,