Disable unsupported tests

Unclear why this needs to be done manually and is not done by the existing Trusty patches.

library/std/src/fs.rs

@@ -14,7 +14,8 @@
         target_os = "emscripten",
         target_os = "wasi",
         target_env = "sgx",
-        target_os = "xous"
+        target_os = "xous",
+        target_os = "trusty",
     ))
 ))]
 mod tests;

library/std/src/net/tcp.rs

@@ -5,7 +5,8 @@
     not(any(
         target_os = "emscripten",
         all(target_os = "wasi", target_env = "p1"),
-        target_os = "xous"
+        target_os = "xous",
+        target_os = "trusty",
     ))
 ))]
 mod tests;

library/std/src/net/udp.rs

@@ -4,7 +4,8 @@
         target_os = "emscripten",
         all(target_os = "wasi", target_env = "p1"),
         target_env = "sgx",
-        target_os = "xous"
+        target_os = "xous",
+        target_os = "trusty",
     ))
 ))]
 mod tests;

library/std/src/process.rs

@@ -154,7 +154,8 @@
         target_os = "emscripten",
         target_os = "wasi",
         target_env = "sgx",
-        target_os = "xous"
+        target_os = "xous",
+        target_os = "trusty",
     ))
 ))]
 mod tests;