Install Rust before make jerboa (native-bundle needs cargo)

ober

22745e24b878ac1e116b819ee68b463155a20bb7

diff --git a/.builds/ci.yml b/.builds/ci.yml
index 15ffb47..c63f825 100644
--- a/.builds/ci.yml
+++ b/.builds/ci.yml
@@ -13,8 +13,6 @@ packages:
 - tar
 - zlib1g-dev
 - liblz4-dev
-- cargo
-- rustc
 sources:
 - https://git.sr.ht/~lisp/jerboa
 - https://git.sr.ht/~lisp/jerboa-secmonlib
@@ -23,12 +21,11 @@ artifacts:
 tasks:
 - build-jerboa: |
     cd jerboa
+    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
+      sh -s -- -y --profile minimal --default-toolchain 1.94.1
+    source "$HOME/.cargo/env"
     make jerboa CHEZ_CONFIGURE_EXTRA=--disable-x11
     echo 'export PATH="$HOME/jerboa/dist:$PATH"' >> ~/.buildenv
-- setup-rust: |
-    # Install Rust toolchain matching jerboa's native FFI build.
-    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain 1.88.0
-    echo 'source "$HOME/.cargo/env"' >> ~/.buildenv
 - package: |
     cd jerboa-secmonlib
     J="$HOME/jerboa/dist/jerboa"