ubuntu2004 build fails with "error[E0283]: type annotations needed"

[henti]

Description
Building ubuntu2004 image from ubuntu20/20210123.1 while building cargo I get the following error:

==> azure-arm: error[E0283]: type annotations needed
==> azure-arm:    --> /usr/share/rust/.cargo/registry/src/gh.neting.cc-1ecc6299db9ec823/cargo-0.50.0/src/cargo/util/config/de.rs:530:63
==> azure-arm:     |
==> azure-arm: 530 |                 seed.deserialize(Tuple2Deserializer(1i32, env.as_ref()))
==> azure-arm:     |                                                           ----^^^^^^--
==> azure-arm:     |                                                           |   |
==> azure-arm:     |                                                           |   cannot infer type for type parameter `T` declared on the trait `AsRef`
==> azure-arm:     |                                                           this method call resolves to `&T`
==> azure-arm:     |
==> azure-arm:     = note: cannot satisfy `std::string::String: AsRef<_>`
==> azure-arm:
==> azure-arm: error: aborting due to previous error
==> azure-arm:
==> azure-arm: For more information about this error, try `rustc --explain E0283`.
==> azure-arm: error: failed to compile `cargo-outdated v0.9.14`, intermediate artifacts can be found at `/tmp/cargo-installPzevWT`
==> azure-arm:
==> azure-arm: Caused by:
==> azure-arm:   could not compile `cargo`
==> azure-arm:
==> azure-arm: To learn more, run the command again with --verbose.
==> azure-arm: Script exited with non-zero exit status: 101.Allowed exit codes are: [0]

Area for Triage:
Rust

Question, Bug, or Feature?:
Bug

Virtual environments affected

• Ubuntu 16.04
• Ubuntu 18.04
• Ubuntu 20.04
• macOS 10.15
• macOS 11.0
• Windows Server 2016 R2
• Windows Server 2019

Expected behavior
Image build succeeds

Actual behavior
Image build fails

Repro steps
A description with steps to reproduce the issue. If your have a public example or repo to share,
please provide the link.

1. git clone git@github.com:actions/virtual-environments.git
2. cd virtual-environments
3. image="ubuntu2004"
4. os="linux"
5. ResourceGroupName="company-uk-south"
6. AzureLocation="uksouth"
7. ImageGenerationRepositoryRoot=$(pwd)
8. builderScriptPath=${ImageGenerationRepositoryRoot}/images/$os/$image.json
9. storageAccountName="$(echo $ResourceGroupName | sed 's/-//g')001"
10. echo "GithubFeedToken=$PAT" > ~/.ssh/GitHubFeedToken
11. . ~/.ssh/GitHubFeedToken
12. packer build -on-error=ask
    -var subscription_id=$SubscriptionId
    -var location=$AzureLocation
    -var resource_group=$ResourceGroupName
    -var storage_account=$storageAccountName
    -var github_feed_token=$GithubFeedToken
    $builderScriptPath

[al-cheb]

Hello, @henti
Fixed #2545 PR. Please merge the latest changes from main branch.

[henti]

Hi @al-cheb

Fantastic, thank you. Will a new release be issued for this fix ?

[al-cheb]

Hi @al-cheb

Fantastic, thank you. Will a new release be issued for this fix ?

I hope so. Fix is already merged - rust-lang/cargo#9102. Discussion is in the thread - rust-lang/cargo#7169

[ktorn]

Also ran into this on Mac OS 10.15.6 whilst running the cargo install cargo-generate step from the Rust and Webassembly - Setup.

Will await the release.

[Antiarchitect]

Fedora 33, also.

[liushooter]

mac 10.15 Catalina, also.

[henti]

I'm having the same issue with windows 2016 build and this error

==> vhd: error[E0283]: type annotations needed
==> vhd:    --> C:\Rust\.cargo\registry\src\gh.neting.cc-1ecc6299db9ec823\cargo-0.50.0\src/cargo\util\config\de.rs:530:63
==> vhd:     |
==> vhd: 530 |                 seed.deserialize(Tuple2Deserializer(1i32, env.as_ref()))
==> vhd:     |                                                           ----^^^^^^--
==> vhd:     |                                                           |   |
==> vhd:     |                                                           |   cannot infer type for type parameter `T` declared on the trait `AsRef`
==> vhd:     |                                                           this method call resolves to `&T`
==> vhd:     |
==> vhd:     = note: cannot satisfy `std::string::String: AsRef<_>`
==> vhd:
==> vhd: error: aborting due to previous error
==> vhd:
==> vhd: For more information about this error, try `rustc --explain E0283`.
==> vhd: error: failed to compile `cargo-outdated v0.9.14`, intermediate artifacts can be found at `C:\Users\packer\AppData\Local\Temp\cargo-install
Dc86sw`
==> vhd:
==> vhd: Caused by:
==> vhd:   could not compile `cargo`
==> vhd:
==> vhd: To learn more, run the command again with --verbose.
==> vhd:      Summary Successfully installed bindgen, cbindgen, cargo-audit! Failed to install cargo-outdated (see error(s) above).

This is on the win16/20210118.1 tag and i've tested with 229234d1628cd4920413a6b0f68f663b8107f3f2 cherry-picked as well..

[al-cheb]

@henti , Fixed in the #2546 PR.

[henti]

@al-cheb Fantastic, cherry-picked and rebuilding.