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I recently upgraded a fork of the Node Template to v0.9.25 and now I am getting an error about the Wasm toolchain not being installed. Per the official Substrate documentation, the failing build is adding the Wasm target to the nightly toolchain.

~: rustup show
Default host: x86_64-unknown-linux-gnu
rustup home:  /home/werq/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-x86_64-unknown-linux-gnu
1.60.0-x86_64-unknown-linux-gnu

installed targets for active toolchain
--------------------------------------

wasm32-unknown-unknown
x86_64-unknown-linux-gnu

active toolchain
----------------

stable-x86_64-unknown-linux-gnu (default)
rustc 1.62.0 (a8314ef7d 2022-06-27)
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4
  • Something amiss with your setup...? github.com/substrate-developer-hub/substrate-node-template/runs/… for sure this built with the template for this version
    – Nuke ♦
    Jul 13, 2022 at 15:14
  • My setup has not changed - only the Substrate version changed and the build started failing. You can actually check out the set-up yourself by looking at the workflow configuration. I noticed that your build was passing, but I also noticed that it looks like that build is skipping Wasm compilation, which seems to be the root of my problem.
    – Dan Forbes
    Jul 13, 2022 at 15:35
  • You probably dont want to build the runtime in the CI anyway? Then you can skip it with an env flag like for example here.
    – Oliver Tale-Yazdi
    Jul 14, 2022 at 12:16
  • I have the same problem when I build locally and I definitely need the runtime ;-)
    – Dan Forbes
    Jul 14, 2022 at 14:59

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3

This was a transient problem that was fixed by updating my nightly version after a few days.

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