ci: convert build and test steps to use cargo-all-features

Ensure that every permutation of feature flags is both build-tested, and
has their unit-tests ran.

The unit-testing part can be reverted to `--all-features` at some point,
once we have made sure that all our cargo features are actually
additive.

Signed-off-by: Patrick Roy <[email protected]>

Author: roypat

.buildkite/test_description.json

@@ -2,7 +2,7 @@
   "tests": [
     {
       "test_name": "build-gnu",
-      "command": "RUSTFLAGS=\"-D warnings\" cargo build --release --workspace --all-targets",
+      "command": "RUSTFLAGS=\"-D warnings\" cargo all-features build --release --workspace --all-targets",
       "platform": [
         "x86_64",
         "aarch64",
@@ -11,7 +11,7 @@
     },
     {
       "test_name": "build-musl",
-      "command": "RUSTFLAGS=\"-D warnings\" cargo build --release --target {target_platform}-unknown-linux-musl --workspace --all-targets",
+      "command": "RUSTFLAGS=\"-D warnings\" cargo all-features build --release --target {target_platform}-unknown-linux-musl --workspace --all-targets",
       "platform": [
         "x86_64",
         "aarch64"
@@ -39,7 +39,7 @@
     },
     {
       "test_name": "unittests-musl",
-      "command": "cargo test --all-features --workspace --target {target_platform}-unknown-linux-musl",
+      "command": "cargo all-features test --workspace --target {target_platform}-unknown-linux-musl",
       "platform": [
         "x86_64",
         "aarch64"
@@ -50,7 +50,7 @@
     },
     {
       "test_name": "unittests-gnu-release",
-      "command": "cargo test --release --all-features --workspace",
+      "command": "cargo all-features test --release --workspace",
       "platform": [
         "x86_64",
         "aarch64",
@@ -62,7 +62,7 @@
     },
     {
       "test_name": "unittests-musl-release",
-      "command": "cargo test --release --all-features --workspace --target {target_platform}-unknown-linux-musl",
+      "command": "cargo all-features test --release --workspace --target {target_platform}-unknown-linux-musl",
       "platform": [
         "x86_64",
         "aarch64"