ci: Pin coverage toolchain to nightly-2025-11-27
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This fixes a CI failure resulting from use of rustc nightly with `llvm-cov`. refer to: https://github.com/bitcoindevkit/bdk/actions/runs/19946035484. As a workaround we change `code_coverage.yml` to set the toolchain to `nightly-2025-11-27` which is a version of the compiler that is known to work with `cargo-llvm-cov` at generating coverage reports.
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thunderbiscuit
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Dec 10, 2025
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ACK 0e8849c.
I would maybe just open an issue to keep track of the use of nightly and remember to remove it once stuff upstream is fixed.
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Description
code_coverage.ymlstarted failing as can be seen in a recent CI run. As a workaround I set the toolchain in the coverage workflow tonightly-2025-11-27which is the version of the compiler in use the last time there was a successful coverage run.The cause is unknown (to me) and likely doesn't originate from a crate in
bdk. Assuming that a fix can be found, we can eventually revert this or otherwise keep the toolchain incode_coverage.ymlup to date as needed.Changelog notice
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