diff --git a/Cargo.toml b/Cargo.toml
index 0874c2c..381b7dc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -220,7 +220,6 @@ string_add = "warn"
 string_add_assign = "warn"
 string_lit_as_bytes = "warn"
 string_lit_chars_any = "warn"
-string_to_string = "warn"
 suspicious_command_arg_space = "warn"
 suspicious_xor_used_as_pow = "warn"
 todo = "warn"
@@ -230,7 +229,7 @@ trailing_empty_array = "warn"
 trait_duplication_in_bounds = "warn"
 transmute_ptr_to_ptr = "warn"
 tuple_array_conversions = "warn"
-unchecked_duration_subtraction = "warn"
+unchecked_time_subtraction = "warn"
 undocumented_unsafe_blocks = "warn"
 unimplemented = "warn"
 uninhabited_references = "warn"