Build: removing Rust build info on stdout

This drastically reduces the logging information we get when building Mina.
The user can always use `dune build --verbose` for a verbose build.

Author: dannywillems

src/lib/crypto/kimchi_bindings/stubs/dune

@@ -54,23 +54,24 @@
   (env_var KIMCHI_STUBS))
  (locks /cargo-lock) ;; lock for rustup
  (action
-  (progn
-   (setenv
-    RUSTFLAGS
-    %{read:rustflags.sexp}
-    (run
-     cargo
-     build
-     -p
-     kimchi-stubs
-     --release
-     --target-dir
-     %{read:../dune-build-root}/cargo_kimchi_stubs
-     --offline))
-   (run
-    cp
-    %{read:../dune-build-root}/cargo_kimchi_stubs/release/libkimchi_stubs.a
-    .))))
+  (ignore-stdout
+    (progn
+     (setenv
+      RUSTFLAGS
+      %{read:rustflags.sexp}
+      (run
+       cargo
+       build
+       -p
+       kimchi-stubs
+       --release
+       --target-dir
+       %{read:../dune-build-root}/cargo_kimchi_stubs
+       --offline))
+     (run
+      cp
+      %{read:../dune-build-root}/cargo_kimchi_stubs/release/libkimchi_stubs.a
+      .)))))
 
 ;; this is used by nix
 
@@ -166,14 +167,15 @@
   (env_var KIMCHI_STUBS))
  (locks /cargo-lock) ;; lock for rustup
  (action
-  (progn
-   (run rm -rf ./target)
-   (run rm -f ./Cargo.lock)
-   (setenv
-    CARGO_TARGET_DIR
-    "%{read:../dune-build-root}/cargo_kimchi_bindgen"
-    (run cargo run %{targets} --offline))
-   (run ocamlformat -i %{targets}))))
+  (ignore-stdout
+    (progn
+     (run rm -rf ./target)
+     (run rm -f ./Cargo.lock)
+     (setenv
+      CARGO_TARGET_DIR
+      "%{read:../dune-build-root}/cargo_kimchi_bindgen"
+      (run cargo run %{targets} --offline))
+     (run ocamlformat -i %{targets})))))
 
 ;; this is used by nix