diff --git a/config.toml.example b/config.toml.example
index c68d358b6a67e..23943d34b7ca8 100644
--- a/config.toml.example
+++ b/config.toml.example
@@ -288,7 +288,7 @@
 #codegen-units-std = 1
 
 # Whether or not debug assertions are enabled for the compiler and standard
-# library. Also enables compilation of debug! and trace! logging macros.
+# library.
 #debug-assertions = false
 
 # Whether or not debuginfo is emitted
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index b2cafc4cede2e..c94f0ab03014d 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -24,7 +24,7 @@
 //!   often generated by LLVM. Additionally, this library can make explicit
 //!   calls to these functions. Their signatures are the same as found in C.
 //!   These functions are often provided by the system libc, but can also be
-//!   provided by the [rlibc crate](https://crates.io/crates/rlibc).
+//!   provided by the [compiler-builtins crate](https://crates.io/crates/compiler_builtins).
 //!
 //! * `rust_begin_panic` - This function takes four arguments, a
 //!   `fmt::Arguments`, a `&'static str`, and two `u32`'s. These four arguments