diff --git a/library/std/src/sys/sync/condvar/no_threads.rs b/library/std/src/sys/sync/condvar/no_threads.rs
index 98ca2288f74a2..ff2046b0edcdf 100644
--- a/library/std/src/sys/sync/condvar/no_threads.rs
+++ b/library/std/src/sys/sync/condvar/no_threads.rs
@@ -8,6 +8,9 @@ use crate::time::Duration;
     // the main thread, but they are forbidden from accessing sync primitives (the same as UNIX
     // signal handlers).
     not(target_os = "vexos"),
+    // Trusty is "target_has_threads" because it needs atomics for shared-memory IPC, but processes
+    // can't spawn threads.
+    not(target_os = "trusty"),
 ))]
 compile_error!("Using no_threads implementation on a target with threads");
 
diff --git a/library/std/src/sys/sync/mutex/no_threads.rs b/library/std/src/sys/sync/mutex/no_threads.rs
index d031c0e7e1dcf..6fcbb29cfaaeb 100644
--- a/library/std/src/sys/sync/mutex/no_threads.rs
+++ b/library/std/src/sys/sync/mutex/no_threads.rs
@@ -6,6 +6,9 @@ use crate::cell::Cell;
     // the main thread, but they are forbidden from accessing sync primitives (the same as UNIX
     // signal handlers).
     not(target_os = "vexos"),
+    // Trusty is "target_has_threads" because it needs atomics for shared-memory IPC, but processes
+    // can't spawn threads.
+    not(target_os = "trusty"),
 ))]
 compile_error!("Using no_threads implementation on a target with threads");
 
diff --git a/library/std/src/sys/sync/once/no_threads.rs b/library/std/src/sys/sync/once/no_threads.rs
index 725ec28f7cd4f..c4eb8a775ef6e 100644
--- a/library/std/src/sys/sync/once/no_threads.rs
+++ b/library/std/src/sys/sync/once/no_threads.rs
@@ -8,6 +8,9 @@ use crate::sync::once::OnceExclusiveState;
     // the main thread, but they are forbidden from accessing sync primitives (the same as UNIX
     // signal handlers).
     not(target_os = "vexos"),
+    // Trusty is "target_has_threads" because it needs atomics for shared-memory IPC, but processes
+    // can't spawn threads.
+    not(target_os = "trusty"),
 ))]
 compile_error!("Using no_threads implementation on a target with threads");
 
diff --git a/library/std/src/sys/sync/rwlock/no_threads.rs b/library/std/src/sys/sync/rwlock/no_threads.rs
index e7e845cc785c7..62c893dd56e0e 100644
--- a/library/std/src/sys/sync/rwlock/no_threads.rs
+++ b/library/std/src/sys/sync/rwlock/no_threads.rs
@@ -6,6 +6,9 @@ use crate::cell::Cell;
     // the main thread, but they are forbidden from accessing sync primitives (the same as UNIX
     // signal handlers).
     not(target_os = "vexos"),
+    // Trusty is "target_has_threads" because it needs atomics for shared-memory IPC, but processes
+    // can't spawn threads.
+    not(target_os = "trusty"),
 ))]
 compile_error!("Using no_threads implementation on a target with threads");
 
diff --git a/library/std/src/sys/thread_local/no_threads.rs b/library/std/src/sys/thread_local/no_threads.rs
index c8d40a5f4e5d7..fe77ca61b6f6a 100644
--- a/library/std/src/sys/thread_local/no_threads.rs
+++ b/library/std/src/sys/thread_local/no_threads.rs
@@ -12,6 +12,9 @@ use crate::ptr;
     // Since there is only one context that's allowed to access thread locals, it's sound to use the
     // no_threads implementation.
     not(target_os = "vexos"),
+    // Trusty is "target_has_threads" because it needs atomics for shared-memory IPC, but processes
+    // can't spawn threads.
+    not(target_os = "trusty"),
 ))]
 compile_error!("Using no_threads implementation on a target with threads");