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wasm-opt version is 91, but we require a version >= 99 (Not available on Ubuntu 20.04 LTS??) #272

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@orro3790

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Hello,

I followed the steps in the INK tutorial, and right away I'm getting the following error when trying to execute:

cargo +nightly contract build

ERROR: Your wasm-opt version is 91, but we require a version >= 99.

Is the tutorial outdated, or is this error on my part? :S

Running Ubuntu 20.04 LTS (Focal Fossa).. is it possible to upg to >= 99?

apt-get install binaryen ---> installs v. 91, can't seem to find way to upg. :\

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