Rollup of 5 pull requests

[Zalathar]

Successful merges:

• Dial down detail of B-tree description #135761 (Dial down detail of B-tree description)
• remove deprecated Error::description in impls #144373 (remove deprecated Error::description in impls)
• Account for impossible bounds making seemingly unsatisfyable dyn-to-dyn casts #145620 (Account for impossible bounds making seemingly unsatisfyable dyn-to-dyn casts)
• cg_llvm: Replace the llvm::Bool typedef with a proper newtype #145817 (cg_llvm: Replace the llvm::Bool typedef with a proper newtype)
• Update bitflags to 2.9.3. #145828 (Update bitflags to 2.9.3.)

r? @ghost
@rustbot modify labels: rollup

Create a similar rollup

[Zalathar]

@bors r+ rollup=never p=5

[bors]

📌 Commit 7d9c20c has been approved by Zalathar

It is now in the queue for this repository.

[Zalathar]

@bors try jobs=dist-various-2

[Zalathar]

Successor to #145832.

[rust-log-analyzer]

The job dist-various-2 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

[RUSTC-TIMING] gimli test:false 5.162
[RUSTC-TIMING] object test:false 5.902
warning: dropping unsupported crate type `dylib` for target `x86_64-fortanix-unknown-sgx`

error[E0425]: cannot find value `RESULT_SUCCESS` in this scope
 --> library/std/src/sys/pal/sgx/os.rs:8:5
  |
8 |     RESULT_SUCCESS
  |     ^^^^^^^^^^^^^^ not found in this scope
  |
help: consider importing one of these constants
  |
1 + use crate::os::fortanix_sgx::usercalls::raw::RESULT_SUCCESS;
  |
1 + use fortanix_sgx_abi::RESULT_SUCCESS;
  |

error: unused import: `str`
 --> library/std/src/sys/pal/sgx/os.rs:5:22
  |
5 | use crate::{fmt, io, str};
  |                      ^^^
  |
  = note: `-D unused-imports` implied by `-D warnings`

[rust-bors]

💔 Test for bb31400 failed: CI. Failed jobs:

• try - dist-various-2 (web logs, extended logs)

[Zalathar]

Hmm, mysterious.

@bors r-

[Zalathar]

Oh, this is probably #144373, since it actually touches relevant code.