lock file version 4 requires -Znext-lockfile-bump

[Kelvin-1013]

Maintainer's note:

Lockfile v4 has been stabilized since Rust 1.78.0 (#12852), and become the default version when generating/updating Cargo.lock (#14595) since Rust 1.83.0.

The cause you're hitting this hard may be because: The tool you're using called to an older cargo either directly (via cargo executable), or indirectly (depending on cargo as a library). However some other parts of your build system called to a newer cargo that generates a lockfile version 4.

Here are solutions (in order of preference):

• Help maintainers of the tool you use to support the latest Cargo, either bumping cargo version to 0.84.0+, or wrapping the cargo binary from Rust toolchain 1.83.0+.
• Setting package.rust-version to a value older than 1.83 if you haven't prepared to support newer toolchains. For example,

  # Cargo.toml
  [package]
  name = "foo"
  rust-version = "1.82" # or any version older than 1.83

  This works because starting from Rust 1.78.0, Cargo respects package.rust-version when generating lockfiles (#12861).
• Manually edit the lockfile version version = "4" at the top to version = "3".

---

Problem

I have tried so many time but always fail.
Cargo build act, but anchor build not act
help me seniors

Steps

No response

Possible Solution(s)

No response

Notes

No response

Version

No response

[epage]

Lockfile v4 has been stable since Rust 1.78. We are making it the default version as of 1.83 nighties unless your MSRV is below 1.78.

I would look into

• If you can bump your Rust version
• Enforce a lower Rust version is used for anyone who generates the lockfile
• Set package.rust-version, if applicable

[weihanglo]

It would also help if the version info of the Rust toolchain is provided. The output of cargo -vV should be sufficient.

[Kelvin-1013]

Thank you for your response.

`[workspace]
members = [
"programs/*"
]
resolver = "2"

[profile.release]
overflow-checks = true
lto = "fat"
codegen-units = 1
[profile.release.build-override]
opt-level = 3
incremental = false
codegen-units = 1
`

I provide this info, give me advice, seniors

[epage]

Can you provide full reproduction steps with only cargo?

[Kelvin-1013]

Thank you for your help.

I just modify resolver=4 to resolver=3 in Cargo.toml and run anchor build, then this issue is resolved.

[palash2397]

@Kelvin-1013
In Cargo.toml, I changed resolver=2 to resolver=3, and then I got the following error:

[epage]

resolver is for a different meaning than lockfile version

[palash2397]

@epage
Then what should I update? Could you please guide me?

[epage]

As this issue is about lockfiles and you are changing the manifest, this is different. It would be good to provide standard details for someone to help you

• Reproduction steps outside of anchor
• What problem you are trying to solve by switching to workspace.resolver = "3"
• What version of Cargo is being used.

This also looks to more be a Cargo support concern than a bug or feature request, so I would recommend posting about this on https://users.rust-lang.org/

[palash2397]

The same issue that @Kelvin-1013 encountered for the same process.

[619]

I'm getting the same error

[acheroncrypto]

Solution in coral-xyz/anchor#3392 (comment).

Sorry for the disturbance. It would be nice to lock this issue, given the problem is not about this repository.

[kaka527]

Modify the version = "4" at the top of the Cargo.lock file to version = "3".

[palash2397]

@kaka527 Thanks a lot, it’s all good now!

[soupy0x]

Modify the version = "4" at the top of the Cargo.lock file to version = "3".

Only solution that worked for me, thanks @kaka527

[trantrongw]

Modify the version = "4" at the top of the Cargo.lock file to version = "3".

yes. It worked. I don't understand why.

[rcolomina]

yes, it worked. Many thanks!

[g-lightspeed]

Modify the version = "4" at the top of the Cargo.lock file to version = "3".

This worked, thanks!

[weihanglo]

I am going to close this, as there is no action needed.

See the updated PR description that provides some solutions if you're stuck.