Disable incremental compilation when sccache is used

See https://github.com/mozilla/sccache#rust

.github/workflows/ci-python.yml

@@ -16,6 +16,7 @@ jobs:
     env:
       SCCACHE_GHA_ENABLED: "true"
       RUSTC_WRAPPER: "sccache"
+      CARGO_INCREMENTAL: 0
     steps:
       - uses: actions/checkout@v3
 

.github/workflows/ci.yml

@@ -17,6 +17,7 @@ jobs:
     env:
       SCCACHE_GHA_ENABLED: "true"
       RUSTC_WRAPPER: "sccache"
+      CARGO_INCREMENTAL: 0
     steps:
       - uses: actions/checkout@v3
       - uses: r7kamura/rust-problem-matchers@v1.1.0
@@ -41,6 +42,7 @@ jobs:
     env:
       SCCACHE_GHA_ENABLED: "true"
       RUSTC_WRAPPER: "sccache"
+      CARGO_INCREMENTAL: 0
     steps:
       - uses: actions/checkout@v3
 
@@ -78,6 +80,7 @@ jobs:
     env:
       SCCACHE_GHA_ENABLED: "true"
       RUSTC_WRAPPER: "sccache"
+      CARGO_INCREMENTAL: 0
     steps:
       - uses: actions/checkout@v3
 
@@ -114,6 +117,7 @@ jobs:
     env:
       SCCACHE_GHA_ENABLED: "true"
       RUSTC_WRAPPER: "sccache"
+      CARGO_INCREMENTAL: 0
     steps:
       - uses: actions/checkout@v3
 
@@ -133,6 +137,7 @@ jobs:
     env:
       SCCACHE_GHA_ENABLED: "true"
       RUSTC_WRAPPER: "sccache"
+      CARGO_INCREMENTAL: 0
     steps:
       - uses: actions/checkout@v3
 
@@ -165,6 +170,7 @@ jobs:
     env:
       SCCACHE_GHA_ENABLED: "true"
       RUSTC_WRAPPER: "sccache"
+      CARGO_INCREMENTAL: 0
     steps:
       - uses: actions/checkout@v3