[examples] add codegen-units = 1 to all example Cargo.tomls (#448)

16 jobs for master in 7 minutes and 24 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Check
passed #552378
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check-std

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passed #552379
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check-wasm

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  Workspace
passed #552380
linux-docker
build-std

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passed #552381
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build-wasm

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passed #552384
linux-docker
clippy-std

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passed #552385
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clippy-wasm

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passed #552383
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codecov

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passed #552386
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fmt

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passed #552382
linux-docker
test

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  Examples
passed #552389
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examples-clippy-std

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passed #552390
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examples-clippy-wasm

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passed #552391
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examples-contract-build

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passed #552388
linux-docker
examples-fmt

00:00:15

passed #552392
linux-docker
examples-generate-metadata

00:02:23

passed #552387
linux-docker
examples-test

00:00:48

 
  Publish
failed #552393
linux-docker
publish-docs

00:00:36

 
Name Stage Failure
failed
publish-docs Publish

real 0m16.490s
user 0m10.157s
sys 0m0.648s
Running after_script
Running after script...
$ rm -rf .git/ ./*
Uploading artifacts for failed job
ERROR: Job failed: exit code 1