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Add Rust 1.93.0 to the Rust version blocklist. #1653

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Add Rust 1.93.0 to the Rust version blocklist. #1653

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bfedff5
Add Rust 1.93.0 to the Rust version blocklist.
dgohman-fastly Feb 12, 2026
688684f
Add the PR number to the CHANGELOG.md.
dgohman-fastly Feb 12, 2026
74bf166
Change the changelong entry from breaking to enhancement.
dgohman-fastly Feb 13, 2026
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6 changes: 5 additions & 1 deletion .fastly/config.toml
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Expand Up @@ -18,7 +18,11 @@ toolchain_constraint = ">= 1.21" # Go toolchain constraint for use wit
toolchain_constraint_tinygo = ">= 1.18" # Go toolchain constraint for use with TinyGo.

[language.rust]
toolchain_constraint = ">= 1.78 != 1.91.0" # Rust 1.91.0 produces broken WASM packages which crash when handling requests
# * Rust 1.91.0 has a bug where it produces broken wasm packages which crash
# when handling requests; the bug is fixed in Rust 1.91.1.
# * Rust 1.93.0 has a bug on wasm32-wasip2 where it leaks file descriptors in
# `std::fs::File`; the bug is fixed in Rust 1.93.1.
toolchain_constraint = ">= 1.78 != 1.91.0 != 1.93.0"
wasm_wasi_target = "wasm32-wasip1"

[wasm-tools]
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -5,6 +5,7 @@
### Breaking:

- breaking(domain) - service-version oriented `domain` commands have been moved under the `service domain` command. Versionless `domain-v1` commands have been moved to the `domain` command ([#1615](https://github.com/fastly/cli/pull/1615))
- breaking(compute/build): Block version 1.93.0 of Rust to avoid a wasm32-wasip2 bug. ([#1653](https://github.com/fastly/cli/pull/1653))

### Enhancements:

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