no need for (modes native), this is known as ocaml/dune#9979

Author: hannesm

tests/dune

@@ -6,59 +6,51 @@
 
 (test
  (name test_symmetric_runner)
- (modes native)
  (libraries test_common mirage-crypto ounit2)
  (package mirage-crypto)
  (modules test_base test_cipher test_symmetric_runner))
 
 (test
  (name test_random_runner)
- (modes native)
  (libraries test_common mirage-crypto mirage-crypto-rng mirage-crypto-rng.unix
    randomconv ounit2)
  (package mirage-crypto-rng)
  (modules test_random_runner))
 
 (test
  (name test_pk_runner)
- (modes native)
  (libraries test_common mirage-crypto-pk mirage-crypto-rng.unix randomconv
    ounit2)
  (package mirage-crypto-pk)
  (modules test_numeric test_dh test_dsa test_rsa test_pk_runner))
 
 (test
  (name test_entropy_collection)
- (modes native)
  (modules test_entropy_collection)
  (package mirage-crypto-rng-mirage)
  (libraries mirage-crypto-rng-mirage mirage-unix mirage-time-unix
    mirage-clock-unix duration ohex))
 
 (test
  (name test_entropy_collection_async)
- (modes native)
  (modules test_entropy_collection_async)
  (package mirage-crypto-rng-async)
  (libraries mirage-crypto-rng-async ohex))
 
 (test
  (name test_entropy)
- (modes native)
  (modules test_entropy)
  (package mirage-crypto-rng)
  (libraries mirage-crypto-rng ohex))
 
 (test
  (name test_ec)
- (modes native)
  (modules test_ec)
  (libraries test_common alcotest mirage-crypto-ec mirage-crypto-rng.unix)
  (package mirage-crypto-ec))
 
 (test
  (name test_ec_wycheproof)
- (modes native)
  (modules test_ec_wycheproof)
  (deps ecdh_secp256r1_test.json ecdsa_secp256r1_sha256_test.json
    ecdsa_secp256r1_sha512_test.json ecdh_secp384r1_test.json
@@ -70,14 +62,12 @@
 
 (tests
  (names     test_eio_rng test_eio_entropy_collection)
- (modes native)
  (modules   test_eio_rng test_eio_entropy_collection)
  (libraries mirage-crypto-rng-eio duration eio_main ohex)
  (package   mirage-crypto-rng-eio))
 
 (tests
  (names     test_miou_rng test_miou_entropy_collection)
- (modes native)
  (modules   test_miou_rng test_miou_entropy_collection)
  (libraries mirage-crypto-rng-miou-unix duration ohex)
  (package   mirage-crypto-rng-miou-unix))