diff --git a/library/std/src/keyword_docs.rs b/library/std/src/keyword_docs.rs
index 2e93807037464..a8365071d61eb 100644
--- a/library/std/src/keyword_docs.rs
+++ b/library/std/src/keyword_docs.rs
@@ -182,7 +182,7 @@ mod break_keyword {}
 /// T` and `*mut T`. More about `const` as used in raw pointers can be read at the Rust docs for the [pointer primitive].
 ///
 /// [pointer primitive]: pointer
-/// [Rust Book]: ../book/ch03-01-variables-and-mutability.html#differences-between-variables-and-constants
+/// [Rust Book]: ../book/ch03-01-variables-and-mutability.html#constants
 /// [Reference]: ../reference/items/constant-items.html
 /// [const-eval]: ../reference/const_eval.html
 mod const_keyword {}
diff --git a/library/std/src/os/unix/process.rs b/library/std/src/os/unix/process.rs
index 286a7c3b386f9..01b8303a6c389 100644
--- a/library/std/src/os/unix/process.rs
+++ b/library/std/src/os/unix/process.rs
@@ -39,7 +39,7 @@ pub trait CommandExt: Sealed {
 
     /// Sets the supplementary group IDs for the calling process. Translates to
     /// a `setgroups` call in the child process.
-    #[unstable(feature = "setgroups", issue = "38527", reason = "")]
+    #[unstable(feature = "setgroups", issue = "90747")]
     fn groups(
         &mut self,
         #[cfg(not(target_os = "vxworks"))] groups: &[u32],
diff --git a/library/std/src/sys/solid/abi/mod.rs b/library/std/src/sys/solid/abi/mod.rs
index 3526440fb85f0..3205f0db85fc3 100644
--- a/library/std/src/sys/solid/abi/mod.rs
+++ b/library/std/src/sys/solid/abi/mod.rs
@@ -4,17 +4,15 @@ mod fs;
 pub mod sockets;
 pub use self::fs::*;
 
-pub const SOLID_BP_PROGRAM_EXITED: usize = 15;
-pub const SOLID_BP_CSABORT: usize = 16;
-
 #[inline(always)]
 pub fn breakpoint_program_exited(tid: usize) {
     unsafe {
         match () {
+            // SOLID_BP_PROGRAM_EXITED = 15
             #[cfg(target_arch = "arm")]
-            () => asm!("bkpt #{}", const SOLID_BP_PROGRAM_EXITED, in("r0") tid),
+            () => asm!("bkpt #15", in("r0") tid),
             #[cfg(target_arch = "aarch64")]
-            () => asm!("hlt #{}", const SOLID_BP_PROGRAM_EXITED, in("x0") tid),
+            () => asm!("hlt #15", in("x0") tid),
         }
     }
 }
@@ -23,10 +21,11 @@ pub fn breakpoint_program_exited(tid: usize) {
 pub fn breakpoint_abort() {
     unsafe {
         match () {
+            // SOLID_BP_CSABORT = 16
             #[cfg(target_arch = "arm")]
-            () => asm!("bkpt #{}", const SOLID_BP_CSABORT),
+            () => asm!("bkpt #16"),
             #[cfg(target_arch = "aarch64")]
-            () => asm!("hlt #{}", const SOLID_BP_CSABORT),
+            () => asm!("hlt #16"),
         }
     }
 }
diff --git a/src/doc/book b/src/doc/book
index fd9299792852c..5c5dbc5b196c9 160000
--- a/src/doc/book
+++ b/src/doc/book
@@ -1 +1 @@
-Subproject commit fd9299792852c9a368cb236748781852f75cdac6
+Subproject commit 5c5dbc5b196c9564422b3193264f3288d2a051ce
diff --git a/src/doc/edition-guide b/src/doc/edition-guide
index 7c0088ca744d2..27f4a84d3852e 160000
--- a/src/doc/edition-guide
+++ b/src/doc/edition-guide
@@ -1 +1 @@
-Subproject commit 7c0088ca744d293a5f4b1e2ac378e7c23d30fe55
+Subproject commit 27f4a84d3852e9416cae5861254fa53a825c56bd
diff --git a/src/doc/nomicon b/src/doc/nomicon
index 358e6a61d5f4f..c6b4bf831e9a4 160000
--- a/src/doc/nomicon
+++ b/src/doc/nomicon
@@ -1 +1 @@
-Subproject commit 358e6a61d5f4f0496d0a81e70cdcd25d05307342
+Subproject commit c6b4bf831e9a40aec34f53067d20634839a6778b
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
index 27f1ff5e440ef..e9d45342d7a6c 160000
--- a/src/doc/rust-by-example
+++ b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 27f1ff5e440ef78828b68ab882b98e1b10d9af32
+Subproject commit e9d45342d7a6c1def4731f1782d87ea317ba30c3
diff --git a/src/doc/rustc-dev-guide b/src/doc/rustc-dev-guide
index b06008731af0f..196ef69aa68f2 160000
--- a/src/doc/rustc-dev-guide
+++ b/src/doc/rustc-dev-guide
@@ -1 +1 @@
-Subproject commit b06008731af0f7d07cd0614e820c8276dfed1c18
+Subproject commit 196ef69aa68f2cef44f37566ee7db37daf00301b