diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c91fdf3b0..f3ccd2622 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -65,6 +65,17 @@ jobs:
             ssl: ssl
             debug: debug
             hup: no_hup
+          # wasm32-unknown-unknown
+          - runtime: wasmtime
+            wasmtime: 23.0.2
+            os: ubuntu-latest
+            cc: gcc-12
+            ngx: 1.27.1
+            ipc: no_ipc
+            ssl: no_ssl
+            debug: debug
+            hup: no_hup
+            wasm_target: wasm32-unknown-unknown
           # Old Nginx
           - label: old_nginx
             os: ubuntu-latest
@@ -146,6 +157,7 @@ jobs:
       ssl: ${{ matrix.ssl }}
       debug: ${{ matrix.debug }}
       hup: ${{ matrix.hup }}
+      wasm_target: ${{ matrix.wasm_target }}
       module_type: ${{ matrix.module_type }}
       coverage: true
     secrets: inherit
@@ -162,7 +174,7 @@ jobs:
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           parallel-finished: true
-          carryforward: 'unit-ngx_1.27.1-wasmer-no_ipc-ssl-debug-no_hup-static,unit-ngx_1.27.1-wasmer-no_ipc-ssl-no_debug-no_hup-static,unit-ngx_1.27.1-wasmtime-no_ipc-ssl-debug-hup-static,unit-ngx_1.27.1-wasmtime-no_ipc-ssl-debug-hup-dynamic,unit-ngx_1.27.1-v8-no_ipc-ssl-debug-no_hup-static,unit-ngx_1.21.6-wasmer-no_ipc-ssl-debug-no_hup-static,unit-ngx_1.27.1-wasmer-no_ipc-no_ssl-no_debug-no_hup-static,unit-openresty_1.25.3.2-wasmtime-no_ipc-ssl-debug-no_hup-static,unit-openresty_1.25.3.2-wasmtime-no_ipc-ssl-debug-no_hup-dynamic,unit-ngx_1.27.1-wasmtime-ipc-no_ssl-debug-no_hup-static'
+          carryforward: 'unit-ngx_1.27.1-wasmer-no_ipc-ssl-debug-no_hup-static,unit-ngx_1.27.1-wasmer-no_ipc-ssl-no_debug-no_hup-static,unit-ngx_1.27.1-wasmtime-no_ipc-ssl-debug-hup-static,unit-ngx_1.27.1-wasmtime-no_ipc-ssl-debug-hup-dynamic,unit-ngx_1.27.1-v8-no_ipc-ssl-debug-no_hup-static,unit-ngx_1.27.1-wasmtime-no_ipc-no_ssl-debug-no_hup-static-wasm32-unknown-unknown,unit-ngx_1.21.6-wasmer-no_ipc-ssl-debug-no_hup-static,unit-ngx_1.27.1-wasmer-no_ipc-no_ssl-no_debug-no_hup-static,unit-openresty_1.25.3.2-wasmtime-no_ipc-ssl-debug-no_hup-static,unit-openresty_1.25.3.2-wasmtime-no_ipc-ssl-debug-no_hup-dynamic,unit-ngx_1.27.1-wasmtime-ipc-no_ssl-debug-no_hup-static'
 
   valgrind:
     name: 'Valgrind'
diff --git a/.github/workflows/job-unit-tests.yml b/.github/workflows/job-unit-tests.yml
index 70d2037d1..f797d2472 100644
--- a/.github/workflows/job-unit-tests.yml
+++ b/.github/workflows/job-unit-tests.yml
@@ -39,6 +39,9 @@ on:
       hup:
         required: true
         type: string
+      wasm_target:
+        required: false
+        type: string
       module_type:
         required: true
         type: string
@@ -64,6 +67,7 @@ env:
   TEST_NGINX_TIMEOUT: 60
   TEST_NGINX_EXTERNAL_TIMEOUT: 60s
   TEST_NGINX_EXTERNAL_RESOLVER: 127.0.0.1:8053
+  TEST_NGINX_CARGO_RUSTTARGET: ${{ inputs.wasm_target }}
 
 jobs:
   tests:
@@ -170,6 +174,9 @@ jobs:
           else
             name="$name-static"
           fi
+          if [ -n "${{ inputs.wasm_target }}" ]; then
+            name="$name-${{ inputs.wasm_target }}"
+          fi
           echo "name=$name" >> $GITHUB_OUTPUT
       - name: Coveralls Upload
         if: ${{ !env.ACT && inputs.coverage }}
diff --git a/Makefile b/Makefile
index 50cc8dc26..166e3f0be 100644
--- a/Makefile
+++ b/Makefile
@@ -54,7 +54,7 @@ setup:
 
 .PHONY: test
 test:
-	@util/test.sh t/0*
+	@util/test.sh t/
 
 .PHONY: test-build
 test-build:
diff --git a/t/01-wasm/hfuncs/wasi/000-non_host_wasi.t b/t/01-wasm/hfuncs/wasi/000-non_host_wasi.t
index 1ed456625..8e6a1112a 100644
--- a/t/01-wasm/hfuncs/wasi/000-non_host_wasi.t
+++ b/t/01-wasm/hfuncs/wasi/000-non_host_wasi.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 our $nginxV = $t::TestWasmX::nginxV;
 
 plan_tests(4);
diff --git a/t/01-wasm/hfuncs/wasi/001-random_get.t b/t/01-wasm/hfuncs/wasi/001-random_get.t
index c4fd6eb16..0689dfc62 100644
--- a/t/01-wasm/hfuncs/wasi/001-random_get.t
+++ b/t/01-wasm/hfuncs/wasi/001-random_get.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/002-environ_sizes_get.t b/t/01-wasm/hfuncs/wasi/002-environ_sizes_get.t
index d7814e6f4..b58cac71a 100644
--- a/t/01-wasm/hfuncs/wasi/002-environ_sizes_get.t
+++ b/t/01-wasm/hfuncs/wasi/002-environ_sizes_get.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/003-environ_get.t b/t/01-wasm/hfuncs/wasi/003-environ_get.t
index 55f9163da..de0d3ec7e 100644
--- a/t/01-wasm/hfuncs/wasi/003-environ_get.t
+++ b/t/01-wasm/hfuncs/wasi/003-environ_get.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/004-clock_time_get.t b/t/01-wasm/hfuncs/wasi/004-clock_time_get.t
index 20908d7e9..131ce3448 100644
--- a/t/01-wasm/hfuncs/wasi/004-clock_time_get.t
+++ b/t/01-wasm/hfuncs/wasi/004-clock_time_get.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/005-args_sizes_get.t b/t/01-wasm/hfuncs/wasi/005-args_sizes_get.t
index 8b2a3cb3a..deb710c99 100644
--- a/t/01-wasm/hfuncs/wasi/005-args_sizes_get.t
+++ b/t/01-wasm/hfuncs/wasi/005-args_sizes_get.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/006-args_get.t b/t/01-wasm/hfuncs/wasi/006-args_get.t
index e2f5600a2..3397c2e17 100644
--- a/t/01-wasm/hfuncs/wasi/006-args_get.t
+++ b/t/01-wasm/hfuncs/wasi/006-args_get.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/007-fd_write.t b/t/01-wasm/hfuncs/wasi/007-fd_write.t
index ecfe5a0e4..383c8c576 100644
--- a/t/01-wasm/hfuncs/wasi/007-fd_write.t
+++ b/t/01-wasm/hfuncs/wasi/007-fd_write.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/008-fd_close.t b/t/01-wasm/hfuncs/wasi/008-fd_close.t
index 8fca9a49a..22897526c 100644
--- a/t/01-wasm/hfuncs/wasi/008-fd_close.t
+++ b/t/01-wasm/hfuncs/wasi/008-fd_close.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/009-fd_fdstat_get.t b/t/01-wasm/hfuncs/wasi/009-fd_fdstat_get.t
index af00db446..911c7d192 100644
--- a/t/01-wasm/hfuncs/wasi/009-fd_fdstat_get.t
+++ b/t/01-wasm/hfuncs/wasi/009-fd_fdstat_get.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/010-fd_prestat_get.t b/t/01-wasm/hfuncs/wasi/010-fd_prestat_get.t
index e9744f316..cc608ad15 100644
--- a/t/01-wasm/hfuncs/wasi/010-fd_prestat_get.t
+++ b/t/01-wasm/hfuncs/wasi/010-fd_prestat_get.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/011-fd_prestat_dir_name.t b/t/01-wasm/hfuncs/wasi/011-fd_prestat_dir_name.t
index bc643ca83..81ed0f854 100644
--- a/t/01-wasm/hfuncs/wasi/011-fd_prestat_dir_name.t
+++ b/t/01-wasm/hfuncs/wasi/011-fd_prestat_dir_name.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/012-fd_read.t b/t/01-wasm/hfuncs/wasi/012-fd_read.t
index 1efe44e8d..08673deed 100644
--- a/t/01-wasm/hfuncs/wasi/012-fd_read.t
+++ b/t/01-wasm/hfuncs/wasi/012-fd_read.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/013-fd_seek.t b/t/01-wasm/hfuncs/wasi/013-fd_seek.t
index 46963a992..ca2cd162f 100644
--- a/t/01-wasm/hfuncs/wasi/013-fd_seek.t
+++ b/t/01-wasm/hfuncs/wasi/013-fd_seek.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/01-wasm/hfuncs/wasi/014-path_open.t b/t/01-wasm/hfuncs/wasi/014-path_open.t
index b0d8a37b6..217db6eb9 100644
--- a/t/01-wasm/hfuncs/wasi/014-path_open.t
+++ b/t/01-wasm/hfuncs/wasi/014-path_open.t
@@ -4,6 +4,8 @@ use strict;
 use lib '.';
 use t::TestWasmX;
 
+skip_no_wasi();
+
 plan_tests(3);
 run_tests();
 
diff --git a/t/03-proxy_wasm/hfuncs/101-proxy_get_current_time.t b/t/03-proxy_wasm/hfuncs/101-proxy_get_current_time.t
index c8d632937..547886605 100644
--- a/t/03-proxy_wasm/hfuncs/101-proxy_get_current_time.t
+++ b/t/03-proxy_wasm/hfuncs/101-proxy_get_current_time.t
@@ -21,6 +21,6 @@ should produce a log with the current time (ms as ~ns)
 --- response_body
 ok
 --- error_log eval
-qr/\[info\] .*? now: 2.*? UTC/,
+qr/\[info\] .*? now: SystemTime\(\d+\.\d+s\)/,
 --- no_error_log
 [error]
diff --git a/t/10-build/001-build_options.t b/t/10-build/001-build_options.t
index be4df8b82..ff0b44d65 100644
--- a/t/10-build/001-build_options.t
+++ b/t/10-build/001-build_options.t
@@ -4,7 +4,7 @@ use strict;
 use lib '.';
 use t::TestBuild;
 
-skip_valgrind();
+skip_no_test_nginx();
 
 our $buildroot = $t::TestBuild::buildroot;
 our $openssl_ver = get_variable_from_makefile("OPENSSL");
diff --git a/t/10-build/002-runtime_linking.t b/t/10-build/002-runtime_linking.t
index 14033c338..e06c4927a 100644
--- a/t/10-build/002-runtime_linking.t
+++ b/t/10-build/002-runtime_linking.t
@@ -4,7 +4,7 @@ use strict;
 use lib '.';
 use t::TestBuild;
 
-skip_valgrind();
+skip_no_test_nginx();
 
 our $buildroot = $t::TestBuild::buildroot;
 
diff --git a/t/10-build/003-dynamic_module.t b/t/10-build/003-dynamic_module.t
index a34054c74..9cd942cd4 100644
--- a/t/10-build/003-dynamic_module.t
+++ b/t/10-build/003-dynamic_module.t
@@ -4,7 +4,7 @@ use strict;
 use lib '.';
 use t::TestBuild;
 
-skip_valgrind();
+skip_no_test_nginx();
 
 our $buildroot = $t::TestBuild::buildroot;
 
diff --git a/t/10-build/004-ngx_wasm_rs_linking.t b/t/10-build/004-ngx_wasm_rs_linking.t
index 883cd5d25..db81ddaba 100644
--- a/t/10-build/004-ngx_wasm_rs_linking.t
+++ b/t/10-build/004-ngx_wasm_rs_linking.t
@@ -4,7 +4,7 @@ use strict;
 use lib '.';
 use t::TestBuild;
 
-skip_valgrind();
+skip_no_test_nginx();
 
 our $buildroot = $t::TestBuild::buildroot;
 
diff --git a/t/TestBuild.pm b/t/TestBuild.pm
index fb91e0f8b..4f004593d 100644
--- a/t/TestBuild.pm
+++ b/t/TestBuild.pm
@@ -17,6 +17,7 @@ our $buildroot = $ENV{NGX_BUILD_DIR_BUILDROOT};
 our @EXPORT = qw(
     $buildroot
     skip_valgrind
+    skip_no_test_nginx
     get_variable_from_makefile
     run_tests
 );
@@ -45,6 +46,14 @@ sub skip_valgrind {
     }
 }
 
+sub skip_no_test_nginx {
+    if (!defined $ENV{TEST_NGINX_NO_TEST_NGINX}
+        || $ENV{TEST_NGINX_NO_TEST_NGINX} != 1)
+    {
+        plan(skip_all => "skip without build test mode (\$TEST_NGINX_NO_TEST_NGINX=1)");
+    }
+}
+
 sub get_variable_from_makefile($) {
     my $name = shift;
 
diff --git a/t/TestWasmX.pm b/t/TestWasmX.pm
index e89cc1b47..a59fb2605 100644
--- a/t/TestWasmX.pm
+++ b/t/TestWasmX.pm
@@ -40,6 +40,7 @@ our @EXPORT = qw(
     skip_no_debug
     skip_no_go_sdk
     skip_no_assemblyscript_sdk
+    skip_no_wasi
 );
 
 $ENV{TEST_NGINX_USE_HUP} ||= 0;
@@ -103,6 +104,12 @@ sub skip_no_assemblyscript_sdk {
     }
 }
 
+sub skip_no_wasi {
+    if ($ENV{TEST_NGINX_CARGO_RUSTTARGET} !~ m/wasi/) {
+        plan(skip_all => "skip without WASI target (\$TEST_NGINX_CARGO_RUSTTARGET is set to \"$ENV{TEST_NGINX_CARGO_RUSTTARGET}\")");
+    }
+}
+
 sub load_nginx_modules (@) {
     splice @nginx_modules, 0, 0, @_;
 }
diff --git a/t/lib/Cargo.lock b/t/lib/Cargo.lock
index 1c9a1cff3..c1fe84706 100644
--- a/t/lib/Cargo.lock
+++ b/t/lib/Cargo.lock
@@ -46,21 +46,6 @@ version = "0.2.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5c6cb57a04249c6480766f7f7cef5467412af1490f8d1e243141daddada3264f"
 
-[[package]]
-name = "android-tzdata"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
-
-[[package]]
-name = "android_system_properties"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "arrayref"
 version = "0.3.9"
@@ -73,12 +58,6 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
-[[package]]
-name = "autocfg"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
-
 [[package]]
 name = "backtrace"
 version = "0.3.74"
@@ -105,12 +84,6 @@ dependencies = [
  "proxy-wasm 0.2.2",
 ]
 
-[[package]]
-name = "bitflags"
-version = "2.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
-
 [[package]]
 name = "blake3"
 version = "1.5.4"
@@ -124,12 +97,6 @@ dependencies = [
  "constant_time_eq",
 ]
 
-[[package]]
-name = "bumpalo"
-version = "3.16.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
-
 [[package]]
 name = "bytes"
 version = "1.7.2"
@@ -151,20 +118,6 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
-name = "chrono"
-version = "0.4.38"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a21f936df1771bf62b77f047b726c4625ff2e8aa607c01ec06e5a05bd8463401"
-dependencies = [
- "android-tzdata",
- "iana-time-zone",
- "js-sys",
- "num-traits",
- "wasm-bindgen",
- "windows-targets",
-]
-
 [[package]]
 name = "constant_time_eq"
 version = "0.3.1"
@@ -179,12 +132,6 @@ dependencies = [
  "proxy-wasm 0.2.2",
 ]
 
-[[package]]
-name = "core-foundation-sys"
-version = "0.8.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
-
 [[package]]
 name = "enum-utils"
 version = "0.1.2"
@@ -232,7 +179,7 @@ checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasi",
 ]
 
 [[package]]
@@ -270,7 +217,6 @@ checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 name = "hostcalls"
 version = "0.1.0"
 dependencies = [
- "chrono",
  "enum-utils",
  "http",
  "log",
@@ -289,29 +235,6 @@ dependencies = [
  "itoa",
 ]
 
-[[package]]
-name = "iana-time-zone"
-version = "0.1.61"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "235e081f3925a06703c2d0117ea8b91f042756fd6e7a6e5d901e8ca1a996b220"
-dependencies = [
- "android_system_properties",
- "core-foundation-sys",
- "iana-time-zone-haiku",
- "js-sys",
- "wasm-bindgen",
- "windows-core",
-]
-
-[[package]]
-name = "iana-time-zone-haiku"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
-dependencies = [
- "cc",
-]
-
 [[package]]
 name = "instance-lifecycle"
 version = "0.1.0"
@@ -326,15 +249,6 @@ version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
 
-[[package]]
-name = "js-sys"
-version = "0.3.70"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1868808506b929d7b0cfa8f75951347aa71bb21144b7791bae35d9bccfcfe37a"
-dependencies = [
- "wasm-bindgen",
-]
-
 [[package]]
 name = "libc"
 version = "0.2.158"
@@ -378,16 +292,6 @@ name = "ngx-rust-tests"
 version = "0.1.0"
 dependencies = [
  "ngx",
- "wasi 0.13.2+wasi-0.2.1",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
-dependencies = [
- "autocfg",
 ]
 
 [[package]]
@@ -537,21 +441,12 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
-[[package]]
-name = "wasi"
-version = "0.13.2+wasi-0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9860ef2271bc7a6e1f985ac4438862a165137fe585ac10bdfad0a8aeb37ba25"
-dependencies = [
- "wit-bindgen-rt",
-]
-
 [[package]]
 name = "wasi-host-tests"
 version = "0.1.0"
 dependencies = [
  "ngx",
- "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasi",
 ]
 
 [[package]]
@@ -559,71 +454,7 @@ name = "wasi-vm-tests"
 version = "0.1.0"
 dependencies = [
  "ngx",
- "wasi 0.11.0+wasi-snapshot-preview1",
-]
-
-[[package]]
-name = "wasm-bindgen"
-version = "0.2.93"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a82edfc16a6c469f5f44dc7b571814045d60404b55a0ee849f9bcfa2e63dd9b5"
-dependencies = [
- "cfg-if",
- "once_cell",
- "wasm-bindgen-macro",
-]
-
-[[package]]
-name = "wasm-bindgen-backend"
-version = "0.2.93"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9de396da306523044d3302746f1208fa71d7532227f15e347e2d93e4145dd77b"
-dependencies = [
- "bumpalo",
- "log",
- "once_cell",
- "proc-macro2",
- "quote",
- "syn 2.0.77",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-macro"
-version = "0.2.93"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "585c4c91a46b072c92e908d99cb1dcdf95c5218eeb6f3bf1efa991ee7a68cccf"
-dependencies = [
- "quote",
- "wasm-bindgen-macro-support",
-]
-
-[[package]]
-name = "wasm-bindgen-macro-support"
-version = "0.2.93"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afc340c74d9005395cf9dd098506f7f44e38f2b4a21c6aaacf9a105ea5e1e836"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.77",
- "wasm-bindgen-backend",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-shared"
-version = "0.2.93"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c62a0a307cb4a311d3a07867860911ca130c3494e8c2719593806c08bc5d0484"
-
-[[package]]
-name = "windows-core"
-version = "0.52.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
-dependencies = [
- "windows-targets",
+ "wasi",
 ]
 
 [[package]]
@@ -690,15 +521,6 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
-[[package]]
-name = "wit-bindgen-rt"
-version = "0.29.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b18e27825442721d23ed98591a80f55220cfe0bf883d92b1ead6c9be237bb34"
-dependencies = [
- "bitflags",
-]
-
 [[package]]
 name = "zerocopy"
 version = "0.7.35"
diff --git a/t/lib/ngx-rust-tests/Cargo.toml b/t/lib/ngx-rust-tests/Cargo.toml
index aed8933ee..e19c4c90b 100644
--- a/t/lib/ngx-rust-tests/Cargo.toml
+++ b/t/lib/ngx-rust-tests/Cargo.toml
@@ -9,4 +9,3 @@ crate-type = ["cdylib"]
 
 [dependencies]
 ngx = { path = "../../../lib/ngx-rust" }
-wasi = "*"
diff --git a/t/lib/proxy-wasm-tests/hostcalls/Cargo.toml b/t/lib/proxy-wasm-tests/hostcalls/Cargo.toml
index 4fc4c8beb..dad9e5d85 100644
--- a/t/lib/proxy-wasm-tests/hostcalls/Cargo.toml
+++ b/t/lib/proxy-wasm-tests/hostcalls/Cargo.toml
@@ -11,6 +11,5 @@ crate-type = ["cdylib"]
 proxy-wasm = "0.2"
 log = "0.4"
 http = "0.2"
-chrono = "0.4"
 enum-utils = "0.1.2"
 urlencoding = "2.1.2"
diff --git a/t/lib/proxy-wasm-tests/hostcalls/src/tests/mod.rs b/t/lib/proxy-wasm-tests/hostcalls/src/tests/mod.rs
index 82993ef99..ae4ffb612 100644
--- a/t/lib/proxy-wasm-tests/hostcalls/src/tests/mod.rs
+++ b/t/lib/proxy-wasm-tests/hostcalls/src/tests/mod.rs
@@ -2,7 +2,6 @@ pub mod echo;
 pub mod host;
 
 use crate::{types::*, *};
-use chrono::{DateTime, Utc};
 use log::*;
 use proxy_wasm::hostcalls::*;
 use proxy_wasm::types::*;
@@ -27,8 +26,8 @@ pub(crate) fn test_log_levels(_: &TestHttp) {
 }
 
 pub(crate) fn test_log_current_time(ctx: &TestHttp) {
-    let now: DateTime<Utc> = ctx.get_current_time().into();
-    info!("now: {}", now)
+    let now = ctx.get_current_time();
+    info!("now: {:?}", now)
 }
 
 pub(crate) fn test_log_request_header(ctx: &TestHttp) {
diff --git a/util/test.sh b/util/test.sh
index 82a4d568f..798f4a7cc 100755
--- a/util/test.sh
+++ b/util/test.sh
@@ -18,7 +18,7 @@ source $NGX_WASM_DIR/util/_lib.sh
 while (( "$#" )); do
     case "$1" in
         --no-test-nginx)
-            NO_TEST_NGINX=1
+            export TEST_NGINX_NO_TEST_NGINX=1
             shift
             ;;
         -j)
@@ -42,7 +42,7 @@ export PERL5LIB=$DIR_CPANM/lib/perl5:$PERL5LIB
 
 # Test::Build
 
-if [[ "$NO_TEST_NGINX" == 1 ]]; then
+if [[ "$TEST_NGINX_NO_TEST_NGINX" == 1 ]]; then
     export TEST_NGINX_NPROC=$(n_jobs)
     exec prove $@
 fi
@@ -72,6 +72,7 @@ export LD_PRELOAD=$DIR_MOCKEAGAIN/mockeagain.so
 #export TEST_NGINX_NO_CLEAN=1
 #export TEST_NGINX_BENCHMARK='1000 10'
 export TEST_NGINX_CLEAN_LOG=${TEST_NGINX_CLEAN_LOG:=0}
+export TEST_NGINX_CARGO_RUSTTARGET=${TEST_NGINX_CARGO_RUSTTARGET:=wasm32-wasip1}
 export TEST_NGINX_CARGO_RUSTFLAGS=${TEST_NGINX_CARGO_RUSTFLAGS:=}
 export TEST_NGINX_CARGO_PROFILE=${TEST_NGINX_CARGO_PROFILE:=release}
 
@@ -102,15 +103,14 @@ if [ "$TEST_NGINX_CARGO_PROFILE" = release ]; then
     args+="--release"
 fi
 
-export RUSTTARGET=wasm32-wasip1
 export RUSTFLAGS="$TEST_NGINX_CARGO_RUSTFLAGS"
 eval cargo build \
     --manifest-path t/lib/Cargo.toml \
     --lib \
-    --target $RUSTTARGET \
+    --target $TEST_NGINX_CARGO_RUSTTARGET \
     "${args[@]}"
 
-eval cp t/lib/target/$RUSTTARGET/$TEST_NGINX_CARGO_PROFILE/*.wasm \
+eval cp t/lib/target/$TEST_NGINX_CARGO_RUSTTARGET/$TEST_NGINX_CARGO_PROFILE/*.wasm \
     $DIR_TESTS_LIB_WASM
 
 $NGX_WASM_DIR/util/sdk.sh -S go --install