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ci: pin rust-toolchain.toml to nightly-2026-04-28 (bd-at72) #177

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Merged
cscheid merged 1 commit into from
May 11, 2026
+10 −1
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ci: pin rust-toolchain.toml to nightly-2026-04-28 (bd-at72) #177

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11 changes: 10 additions & 1 deletion rust-toolchain.toml
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Original file line number Diff line number Diff line change
@@ -1,4 +1,13 @@
[toolchain]
channel = "nightly"
# bd-at72: pinned to the last-known-good nightly. The nightly published on
# 2026-05-11 (rustc commit 4b0c9d76a, dated 2026-05-10) introduced a
# regression that SIGSEGVs in LLVM ThinLTO codegen at opt-level=3 when
# building this workspace for wasm32-unknown-unknown. The crash hits
# multiple crates (quarto-pandoc-types, quarto-ast-reconcile, tokio) and
# escalates: rustc keeps suggesting larger RUST_MIN_STACK values without
# actually fixing the underlying overflow. Pinning is the durable fix
# until the upstream regression is resolved; bump the date when nightly
# stabilizes again.
channel = "nightly-2026-04-28"
components = ["rust-src","rustfmt", "clippy"]
targets = ["wasm32-unknown-unknown"]
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