2 files changed, 2 insertions, 2 deletions
diff --git a/ctr-std/src/sys/wasm/os.rs b/ctr-std/src/sys/wasm/os.rs
index 23ca175..0cb991e 100644
--- a/ctr-std/src/sys/wasm/os.rs
+++ b/ctr-std/src/sys/wasm/os.rs
@@ -21,7 +21,7 @@ pub fn errno() -> i32 {
 }
 
 pub fn error_string(_errno: i32) -> String {
-    format!("operation successful")
+    "operation successful".to_string()
 }
 
 pub fn getcwd() -> io::Result<PathBuf> {
diff --git a/ctr-std/src/sys/wasm/thread.rs b/ctr-std/src/sys/wasm/thread.rs
index 728e678..8173a62 100644
--- a/ctr-std/src/sys/wasm/thread.rs
+++ b/ctr-std/src/sys/wasm/thread.rs
@@ -19,7 +19,7 @@ pub struct Thread(Void);
 pub const DEFAULT_MIN_STACK_SIZE: usize = 4096;
 
 impl Thread {
-    pub unsafe fn new<'a>(_stack: usize, _p: Box<FnBox() + 'a>)
+    pub unsafe fn new<'a>(_stack: usize, _p: Box<dyn FnBox() + 'a>)
         -> io::Result<Thread>
     {
         unsupported()