diff --git a/Cargo.lock b/Cargo.lock
index cbb40f4..0a76aab 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -307,7 +307,7 @@
  "glob",
  "hex 0.4.0",
  "home",
- "humantime",
+ "humantime 2.0.0",
  "ignore",
  "im-rc",
  "jobserver",
@@ -1013,7 +1013,7 @@
 checksum = "aafcde04e90a5226a6443b7aabdb016ba2f8307c847d524724bd9b346dd1a2d3"
 dependencies = [
  "atty",
- "humantime",
+ "humantime 1.3.0",
  "log",
  "regex",
  "termcolor",
@@ -1026,7 +1026,7 @@
 checksum = "44533bbbb3bb3c1fa17d9f2e4e38bbbaf8396ba82193c4cb1b6445d711445d36"
 dependencies = [
  "atty",
- "humantime",
+ "humantime 1.3.0",
  "log",
  "regex",
  "termcolor",
@@ -1455,6 +1455,12 @@
 ]
 
 [[package]]
+name = "humantime"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9b6c53306532d3c8e8087b44e6580e10db51a023cf9b433cea2ac38066b92da"
+
+[[package]]
 name = "hyper"
 version = "0.12.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2647,7 +2653,7 @@
  "clap",
  "derive_more",
  "env_logger 0.6.2",
- "humantime",
+ "humantime 1.3.0",
  "lazy_static 1.3.0",
  "log",
  "rls-span",
diff --git a/src/doc/book b/src/doc/book
index 5c5cfd2..87dd684 160000
--- a/src/doc/book
+++ b/src/doc/book
@@ -1 +1 @@
-Subproject commit 5c5cfd2e94cd42632798d9bd3d1116133e128ac9
+Subproject commit 87dd6843678575f8dda962f239d14ef4be14b352
diff --git a/src/doc/embedded-book b/src/doc/embedded-book
index 9493b7d..4d78994 160000
--- a/src/doc/embedded-book
+++ b/src/doc/embedded-book
@@ -1 +1 @@
-Subproject commit 9493b7d4dc97eda439bd8780f05ad7b234cd1cd7
+Subproject commit 4d78994915af1bde9a95c04a8c27d8dca066232a
diff --git a/src/doc/reference b/src/doc/reference
index e115753..11e893f 160000
--- a/src/doc/reference
+++ b/src/doc/reference
@@ -1 +1 @@
-Subproject commit e1157538e86d83df0cf95d5e33bd943f80d0248f
+Subproject commit 11e893fc1357bc688418ddf1087c2b7aa25d154d
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
index 1d59403..1c2bd02 160000
--- a/src/doc/rust-by-example
+++ b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 1d59403cb5269c190cc52a95584ecc280345495a
+Subproject commit 1c2bd024d13f8011307e13386cf1fea2180352b5
diff --git a/src/librustc_typeck/check/_match.rs b/src/librustc_typeck/check/_match.rs
index bd84547..686cdfb 100644
--- a/src/librustc_typeck/check/_match.rs
+++ b/src/librustc_typeck/check/_match.rs
@@ -50,30 +50,13 @@
 
         self.warn_arms_when_scrutinee_diverges(arms, match_src);
 
-        // Otherwise, we have to union together the types that the
-        // arms produce and so forth.
-        let scrut_diverges = self.diverges.get();
-        self.diverges.set(Diverges::Maybe);
+        // Otherwise, we have to union together the types that the arms produce and so forth.
+        let scrut_diverges = self.diverges.replace(Diverges::Maybe);
 
-        // rust-lang/rust#55810: Typecheck patterns first (via eager
-        // collection into `Vec`), so we get types for all bindings.
-        let all_arm_pats_diverge: Vec<_> = arms
-            .iter()
-            .map(|arm| {
-                let mut all_pats_diverge = Diverges::WarnedAlways;
-                self.diverges.set(Diverges::Maybe);
-                self.check_pat_top(&arm.pat, scrut_ty, Some(scrut.span), true);
-                all_pats_diverge &= self.diverges.get();
-
-                // As discussed with @eddyb, this is for disabling unreachable_code
-                // warnings on patterns (they're now subsumed by unreachable_patterns
-                // warnings).
-                match all_pats_diverge {
-                    Diverges::Maybe => Diverges::Maybe,
-                    Diverges::Always { .. } | Diverges::WarnedAlways => Diverges::WarnedAlways,
-                }
-            })
-            .collect();
+        // #55810: Type check patterns first so we get types for all bindings.
+        for arm in arms {
+            self.check_pat_top(&arm.pat, scrut_ty, Some(scrut.span), true);
+        }
 
         // Now typecheck the blocks.
         //
@@ -104,11 +87,11 @@
             CoerceMany::with_coercion_sites(coerce_first, arms)
         };
 
-        let mut other_arms = vec![]; // used only for diagnostics
+        let mut other_arms = vec![]; // Used only for diagnostics.
         let mut prior_arm_ty = None;
-        for (i, (arm, pats_diverge)) in arms.iter().zip(all_arm_pats_diverge).enumerate() {
+        for (i, arm) in arms.iter().enumerate() {
             if let Some(g) = &arm.guard {
-                self.diverges.set(pats_diverge);
+                self.diverges.set(Diverges::Maybe);
                 match g {
                     hir::Guard::If(e) => {
                         self.check_expr_has_type_or_error(e, tcx.types.bool, |_| {})
@@ -116,7 +99,7 @@
                 };
             }
 
-            self.diverges.set(pats_diverge);
+            self.diverges.set(Diverges::Maybe);
             let arm_ty = if source_if
                 && if_no_else
                 && i != 0
@@ -200,16 +183,14 @@
         arms: &'tcx [hir::Arm<'tcx>],
         source: hir::MatchSource,
     ) {
-        if self.diverges.get().is_always() {
-            use hir::MatchSource::*;
-            let msg = match source {
-                IfDesugar { .. } | IfLetDesugar { .. } => "block in `if` expression",
-                WhileDesugar { .. } | WhileLetDesugar { .. } => "block in `while` expression",
-                _ => "arm",
-            };
-            for arm in arms {
-                self.warn_if_unreachable(arm.body.hir_id, arm.body.span, msg);
-            }
+        use hir::MatchSource::*;
+        let msg = match source {
+            IfDesugar { .. } | IfLetDesugar { .. } => "block in `if` expression",
+            WhileDesugar { .. } | WhileLetDesugar { .. } => "block in `while` expression",
+            _ => "arm",
+        };
+        for arm in arms {
+            self.warn_if_unreachable(arm.body.hir_id, arm.body.span, msg);
         }
     }
 
diff --git a/src/librustc_typeck/check/expr.rs b/src/librustc_typeck/check/expr.rs
index 201a09f..b4c2b85 100644
--- a/src/librustc_typeck/check/expr.rs
+++ b/src/librustc_typeck/check/expr.rs
@@ -165,10 +165,8 @@
         }
 
         // Hide the outer diverging and has_errors flags.
-        let old_diverges = self.diverges.get();
-        let old_has_errors = self.has_errors.get();
-        self.diverges.set(Diverges::Maybe);
-        self.has_errors.set(false);
+        let old_diverges = self.diverges.replace(Diverges::Maybe);
+        let old_has_errors = self.has_errors.replace(false);
 
         let ty = self.check_expr_kind(expr, expected, needs);
 
diff --git a/src/librustc_typeck/check/mod.rs b/src/librustc_typeck/check/mod.rs
index 3818750..2dc198b 100644
--- a/src/librustc_typeck/check/mod.rs
+++ b/src/librustc_typeck/check/mod.rs
@@ -4429,10 +4429,8 @@
         self.warn_if_unreachable(stmt.hir_id, stmt.span, "statement");
 
         // Hide the outer diverging and `has_errors` flags.
-        let old_diverges = self.diverges.get();
-        let old_has_errors = self.has_errors.get();
-        self.diverges.set(Diverges::Maybe);
-        self.has_errors.set(false);
+        let old_diverges = self.diverges.replace(Diverges::Maybe);
+        let old_has_errors = self.has_errors.replace(false);
 
         match stmt.kind {
             hir::StmtKind::Local(ref l) => {
@@ -4442,7 +4440,6 @@
             hir::StmtKind::Item(_) => {}
             hir::StmtKind::Expr(ref expr) => {
                 // Check with expected type of `()`.
-
                 self.check_expr_has_type_or_error(&expr, self.tcx.mk_unit(), |err| {
                     self.suggest_semicolon_at_end(expr.span, err);
                 });
diff --git a/src/tools/cargo b/src/tools/cargo
index ad3dbe1..f6449ba 160000
--- a/src/tools/cargo
+++ b/src/tools/cargo
@@ -1 +1 @@
-Subproject commit ad3dbe10e1e654fb1f032a5dd9481d7cbaa00d65
+Subproject commit f6449ba236db31995255ac5e4cad4ab88296a7c6
diff --git a/src/tools/clippy b/src/tools/clippy
index fd0428f..3e74853 160000
--- a/src/tools/clippy
+++ b/src/tools/clippy
@@ -1 +1 @@
-Subproject commit fd0428f622feee209e6014b802f5717d48d9e978
+Subproject commit 3e74853d1f9893cf2a47f28b658711d8f9f97b6b