Merge #270: Automated daily update to rustc (to nightly-2026-05-14)

df5391e Automated update to rustc nightly-2026-05-14 (Update Nightly Rustc Bot)

Pull request description:

  Automated update to Cargo.toml workspace metadata by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action


ACKs for top commit:
  delta1:
    ACK df5391e; cargo test and clippy locally with rust nightly-2026-05-14
  apoelstra:
    ACK df5391e; successfully ran local tests


Tree-SHA512: 91598f304a225b9be00432bef8423bef37a0f26440856fa8954453a874087a2ef63dfe4b42eecfa2b32362ed4b011d44c8bd38a948cd270b567e6b2fa077306a

Author: apoelstra

Cargo.toml

@@ -11,7 +11,7 @@ edition = "2018"
 rust-version = "1.74.0"
 
 [workspace.metadata.rbmt.toolchains]
-nightly = "nightly-2026-04-17"
+nightly = "nightly-2026-05-14"
 stable = "1.95.0"
 
 [features]