diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index af303dcf..b9745b64 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -96,7 +96,7 @@ jobs:
     # https://docs.github.com/en/actions/learn-github-actions/contexts#context-availability
     strategy:
       matrix:
-        msrv: [1.84.0] # sync with ../../{README.md, Cargo.toml}
+        msrv: [1.84.1] # sync with ../../{README.md, Cargo.toml}
     steps:
       - name: "checkout"
         uses: actions/checkout@v4
diff --git a/DOCS/NIGHTLY.md b/DOCS/NIGHTLY.md
index 44b6b3fc..04318e95 100644
--- a/DOCS/NIGHTLY.md
+++ b/DOCS/NIGHTLY.md
@@ -34,6 +34,7 @@ See also
 # 1.86 will be stable on 2025-04-03 (nightly_stable_next2)
 
 - 1.86: ·[float_next_up_down](https://github.com/rust-lang/rust/pull/135661)
+- 1.86: ·[const_black_box](https://github.com/rust-lang/rust/pull/135414)
 
 # .‥… will be stable later (nightly_stable_later) <https://releases.rs/#ongoing-stabilization-prs>
 - 1.??: ✗[anonymous_pipe](https://github.com/rust-lang/rust/pull/135822)
@@ -42,7 +43,6 @@ See also
 - 1.??: ·[cell_update](https://github.com/rust-lang/rust/pull/134446)
 - 1.??: ·[const_array_from_ref](https://github.com/rust-lang/rust/issues/90206)
         · const_slice_from_ref
-- 1.??: ·[const_black_box](https://github.com/rust-lang/rust/pull/135414)
 - 1.??: ·[const_is_char_boundary](https://github.com/rust-lang/rust/pull/134016)
         · const_str_split_at
 - 1.??: ·[const_slice_flatten](https://github.com/rust-lang/rust/pull/134995)
diff --git a/src/data/codec/radix/base.rs b/src/data/codec/radix/base.rs
index 6ba9ac3b..5863e12b 100644
--- a/src/data/codec/radix/base.rs
+++ b/src/data/codec/radix/base.rs
@@ -310,7 +310,8 @@ macro_rules! methods {
                     i += 1;
                     continue;
                 } // Skip invalid character
-                if byte == mapped.unwrap() || (CASE && byte == mapped.unwrap().to_ascii_lowercase()) {
+                if byte == mapped.unwrap()
+                    || (CASE && byte == mapped.unwrap().to_ascii_lowercase()) {
                     return Some(i as u8);
                 }
                 i += 1;
@@ -328,7 +329,7 @@ macro_rules! methods {
         pub const fn encoded_len_padded(input_len: usize) -> usize {
             let base_len = (input_len * 8).div_ceil($chunk_bits);
             if PAD {
-                (base_len + 7) / 8 * 8 // Round up to nearest multiple of 8
+                base_len.div_ceil(8) * 8 // Round up to nearest multiple of 8
             } else {
                 base_len
             }
diff --git a/src/data/mod.rs b/src/data/mod.rs
index 3c3cde51..f1521d48 100644
--- a/src/data/mod.rs
+++ b/src/data/mod.rs
@@ -43,7 +43,7 @@ crate::items! { // structural access: _mods, _pub_mods, _internals, _all, _alway
     }
     mod _pub_mods { #![allow(unused)]
         pub use super::{
-            codec::_all::*, error::*, iter::_all::*, key::_all::*, list::_all::*,
+            codec::_all::*, error::_all::*, iter::_all::*, key::_all::*, list::_all::*,
             table::_all::*, uid::_all::*, xipher::_all::*,
         };
 
@@ -68,7 +68,7 @@ crate::items! { // structural access: _mods, _pub_mods, _internals, _all, _alway
     }
     pub(super) mod _always { #![allow(unused)]
         pub use super::{
-            codec::_always::*, collection::*, error::*, iter::_always::*, list::_always::*,
+            codec::_always::*, collection::*, error::_all::*, iter::_always::*, list::_always::*,
         };
     }
 }
diff --git a/src/data/node/mod.rs b/src/data/node/mod.rs
index 97d0f0ed..a6c0cb1a 100644
--- a/src/data/node/mod.rs
+++ b/src/data/node/mod.rs
@@ -2,8 +2,8 @@
 //
 //! Abstractions for structured relationships.
 //!
-//! Nodes are a basic unit used to build more complex structures,
-//! like linked lists, graphs and trees.
+//! This module provides tools for building and managing structured relationships
+//! in data systems. These abstractions are designed to work together.
 //
 
 // mod index;
diff --git a/src/lib.rs b/src/lib.rs
index 41801705..7ba72b57 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -63,7 +63,7 @@
     feature(const_collections_with_hasher,)
 )]
 // "nightly_stable_next2": 1.86 core, alloc, std…
-#![cfg_attr(feature = "nightly_stable_next2", feature(float_next_up_down,))]
+#![cfg_attr(feature = "nightly_stable_next2", feature(const_black_box, float_next_up_down))]
 #![cfg_attr(all(feature = "nightly_stable_next2", feature = "alloc"), feature())]
 #![cfg_attr(all(feature = "nightly_stable_next2", feature = "std"), feature())]
 // "nightly_stable_later": 1.?? core, alloc, std, not(miri)…
@@ -72,7 +72,6 @@
     asm_goto,
     cell_update,
     const_array_from_ref,
-    const_black_box,
     const_is_char_boundary,
     const_slice_flatten,
     const_slice_from_ref,
diff --git a/src/num/rand/xorshift/mod.rs b/src/num/rand/xorshift/mod.rs
index 62003bb4..eba8115b 100644
--- a/src/num/rand/xorshift/mod.rs
+++ b/src/num/rand/xorshift/mod.rs
@@ -53,7 +53,6 @@ crate::items! {
     /// - `$triplet`: `0..=3` for 16-bit; `0..=80` for 32-bit; `0..=274` for 64-bit.
     /// - `$seed`:    any value. If `0` is given the default seed will be used.
     ///
-    ///
     /// # Panics
     /// If the `$basis` is outside range `0..=7`.
     //