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Stop caching target/ and fix sccache's per-run cache key

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target/ was the majority of the ~1.5GB cache each of the 5 CI jobs
tarred and uploaded on every run — expensive on a single runner where
those uploads contend for the same disk/network, and pointless since
these jobs build different feature-set combinations into one
identically-keyed target dir anyway. sccache already gives compiler-
level reuse without that duplication.

sccache's cache key was keyed to github.run_id, which never gets an
exact hit, so its ~377MB also re-uploaded in full every single run
with no benefit. Key it to Cargo.lock like the registry cache instead,
so it only re-saves when dependencies actually change.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Austin Schaefer 2026-09-16 15:22:30 +02:00
parent ef37690473
commit 9a9cd9d1d3
1 changed files with 9 additions and 13 deletions
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22
.forgejo/workflows/ci.yml
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@ -24,7 +24,6 @@ jobs:
path: |
~/.cargo/registry
~/.cargo/git
target
key: cargo-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
cargo-${{ runner.os }}-
@ -33,10 +32,11 @@ jobs:
uses: actions/cache@v4
with:
path: /root/.cache/sccache
# Not keyed to Cargo.lock: sccache caches individual compiler
# invocations by content hash, so it should accumulate across
# dependency bumps rather than reset like the target/ cache above.
key: sccache-${{ runner.os }}-${{ github.run_id }}
# Keyed to Cargo.lock, not github.run_id: a per-run key never
# gets an exact hit, so actions/cache re-uploads the full
# sccache dir on every single run even when nothing changed.
# This still refreshes whenever dependencies bump.
key: sccache-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
sccache-${{ runner.os }}-
@ -54,7 +54,6 @@ jobs:
path: |
~/.cargo/registry
~/.cargo/git
target
key: cargo-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
cargo-${{ runner.os }}-
@ -63,7 +62,7 @@ jobs:
uses: actions/cache@v4
with:
path: /root/.cache/sccache
key: sccache-${{ runner.os }}-${{ github.run_id }}
key: sccache-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
sccache-${{ runner.os }}-
@ -81,7 +80,6 @@ jobs:
path: |
~/.cargo/registry
~/.cargo/git
target
key: cargo-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
cargo-${{ runner.os }}-
@ -90,7 +88,7 @@ jobs:
uses: actions/cache@v4
with:
path: /root/.cache/sccache
key: sccache-${{ runner.os }}-${{ github.run_id }}
key: sccache-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
sccache-${{ runner.os }}-
@ -115,7 +113,6 @@ jobs:
path: |
~/.cargo/registry
~/.cargo/git
target
key: cargo-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
cargo-${{ runner.os }}-
@ -124,7 +121,7 @@ jobs:
uses: actions/cache@v4
with:
path: /root/.cache/sccache
key: sccache-${{ runner.os }}-${{ github.run_id }}
key: sccache-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
sccache-${{ runner.os }}-
@ -143,7 +140,6 @@ jobs:
path: |
~/.cargo/registry
~/.cargo/git
target
key: cargo-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
cargo-${{ runner.os }}-
@ -152,7 +148,7 @@ jobs:
uses: actions/cache@v4
with:
path: /root/.cache/sccache
key: sccache-${{ runner.os }}-${{ github.run_id }}
key: sccache-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
restore-keys: |
sccache-${{ runner.os }}-