'Anchor build error versions of anchor-spl and anchor-lang

I'm using the following repository of rust:

https://github.com/SmartCodeBlockchainDev/Nelson-NFT-stacking

when I try to do an anchor build I get the following error:

Failed to obtain package metadata: `cargo metadata` exited with an error:     Updating crates.io index
error: failed to select a version for the requirement `anchor-lang = "^0.20.1"`
candidate versions found which didn't match: 0.24.2
location searched: crates.io index
required by package `nft-staking v0.1.0 (/staking/programs/staking)`

And when I update the cargo.toml file to those versions (anchor-lang and anchor-spl 0.24.2) it gives me several errors in lib.rs:

error: bump targets should not be provided with init. Please use bump without a target.
   --> programs/staking/src/lib.rs:582:9
    |
582 |         bump = vault_nonce,
    |         ^^^^

error[E0432]: unresolved import `crate`
  --> programs/staking/src/lib.rs:48:1
   |
48 | #[program]
   | ^^^^^^^^^^ could not find `__client_accounts_create_user` in the crate root
   |
   = note: this error originates in the attribute macro `program` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find attribute `error` in this scope
    --> programs/staking/src/lib.rs:1024:3
     |
1024 | #[error]
     |   ^^^^^
     |
note: `error` is imported here, but it is a function-like macro
    --> programs/staking/src/lib.rs:2:5
     |
2    | use anchor_lang::prelude::*;
     |     ^^^^^^^^^^^^^^^^^^^^^^^

error: cannot find attribute `msg` in this scope
    --> programs/staking/src/lib.rs:1026:7
     |
1026 |     #[msg("Insufficient funds to unstake.")]
     |       ^^^
     |
note: `msg` is imported here, but it is a function-like macro
    --> programs/staking/src/lib.rs:2:5
     |
2    | use anchor_lang::prelude::*;
     |     ^^^^^^^^^^^^^^^^^^^^^^^

note: `msg` is imported here, but it is a function-like macro
    --> programs/staking/src/lib.rs:2:5
     |
2    | use anchor_lang::prelude::*;
     |     ^^^^^^^^^^^^^^^^^^^^^^^

error: cannot find attribute `msg` in this scope
    --> programs/staking/src/lib.rs:1030:7
     |
1030 |     #[msg("Reward B cannot be funded - pool is single stake.")]
     |       ^^^
     |

^^^^^^^^^^^^^^^^^^^^^^^

note: `msg` is imported here, but it is a function-like macro
    --> programs/staking/src/lib.rs:2:5
     |
2    | use anchor_lang::prelude::*;
     |     ^^^^^^^^^^^^^^^^^^^^^^^

warning: unused import: `program_option::COption`
 --> programs/staking/src/lib.rs:3:42
  |
3 | use anchor_lang::solana_program::{clock, program_option::COption};
  |                                          ^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

error[E0599]: no function or associated item named `try_accounts` found for struct `InitializePool` in the current scope
   --> programs/staking/src/lib.rs:48:1
    |
48  | #[program]
    | ^^^^^^^^^^ function or associated item not found in `InitializePool<'_>`
...
539 | pub struct InitializePool<'info> {
    | -------------------------------- function or associated item `try_accounts` not found for this
    |
    = help: items from traits can only be used if the trait is implemented and in scope
    = note: the following trait defines an item `try_accounts`, perhaps you need to implement it:
            candidate #1: `anchor_lang::Accounts`
    = note: this error originates in the attribute macro `program` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `InitializePool<'_>: anchor_lang::Accounts<'_>` is not satisfied
  --> programs/staking/src/lib.rs:48:1
   |
48 | #[program]
   | ^^^^^^^^^^ the trait `anchor_lang::Accounts<'_>` is not implemented for `InitializePool<'_>`
   |
note: required by `anchor_lang::context::Context::<'a, 'b, 'c, 'info, T>::new`
  --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/anchor-lang-0.24.2/src/context.rs:51:5
   |
51 | /     pub fn new(
52 | |         program_id: &'a Pubkey,
53 | |         accounts: &'b mut T,
54 | |         remaining_accounts: &'c [AccountInfo<'info>],
55 | |         bumps: BTreeMap<String, u8>,
56 | |     ) -> Self {
   | |_____________^
   = note: this error originates in the attribute macro `program` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0599]: no method named `exit` found for struct `InitializePool` in the current scope
   --> programs/staking/src/lib.rs:48:1
    |
48  | #[program]
    | ^^^^^^^^^^ method not found in `InitializePool<'_>`
...
539 | pub struct InitializePool<'info> {
    | -------------------------------- method `exit` not found for this
    |
    = help: items from traits can only be used if the trait is implemented and in scope
    = note: the following trait defines an item `exit`, perhaps you need to implement it:
            candidate #1: `anchor_lang::AccountsExit`
    = note: this error originates in the attribute macro `program` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0599]: no function or associated item named `try_accounts` found for struct `CreateUser` in the current scope
   --> programs/staking/src/lib.rs:48:1
    |
48  | #[program]
    | ^^^^^^^^^^ function or associated item not found in `CreateUser<'_>`
...
608 | pub struct CreateUser<'info> {
    | ---------------------------- function or associated item `try_accounts` not found for this
    |
    = help: items from traits can only be used if the trait is implemented and in scope
    = note: the following trait defines an item `try_accounts`, perhaps you need to implement it:
            candidate #1: `anchor_lang::Accounts`
    = note: this error originates in the attribute macro `program` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `CreateUser<'_>: anchor_lang::Accounts<'_>` is not satisfied
  --> programs/staking/src/lib.rs:48:1
   |
48 | #[program]
   | ^^^^^^^^^^ the trait `anchor_lang::Accounts<'_>` is not implemented for `CreateUser<'_>`
   |
note: required by `anchor_lang::context::Context::<'a, 'b, 'c, 'info, T>::new`
  --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/anchor-lang-0.24.2/src/context.rs:51:5
   |
51 | /     pub fn new(
52 | |         program_id: &'a Pubkey,
53 | |         accounts: &'b mut T,
54 | |         remaining_accounts: &'c [AccountInfo<'info>],
55 | |         bumps: BTreeMap<String, u8>,
56 | |     ) -> Self {
   | |_____________^
   = note: this error originates in the attribute macro `program` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0599]: no method named `exit` found for struct `CreateUser` in the current scope
   --> programs/staking/src/lib.rs:48:1
    |
48  | #[program]
    | ^^^^^^^^^^ method not found in `CreateUser<'_>`
...
608 | pub struct CreateUser<'info> {
    | ---------------------------- method `exit` not found for this
    |
    = help: items from traits can only be used if the trait is implemented and in scope
    = note: the following trait defines an item `exit`, perhaps you need to implement it:
            candidate #1: `anchor_lang::AccountsExit`
    = note: this error originates in the attribute macro `program` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0599]: no variant or associated item named `NotFoundCandyMachine` found for enum `anchor_lang::error::ErrorCode` in the current scope
   --> programs/staking/src/lib.rs:214:35
    |
214 |             return Err(ErrorCode::NotFoundCandyMachine.into());
    |                                   ^^^^^^^^^^^^^^^^^^^^ variant or associated item not found in `anchor_lang::error::ErrorCode`

error[E0599]: no variant or associated item named `PoolPaused` found for enum `anchor_lang::error::ErrorCode` in the current scope
   --> programs/staking/src/lib.rs:224:35
    |
224 |             return Err(ErrorCode::PoolPaused.into());
    |                                   ^^^^^^^^^^ variant or associated item not found in `anchor_lang::error::ErrorCode`

error[E0599]: no variant or associated item named `CandyNotMatch` found for enum `anchor_lang::error::ErrorCode` in the current scope
   --> programs/staking/src/lib.rs:250:35
    |
250 |             return Err(ErrorCode::CandyNotMatch.into());
    |                                   ^^^^^^^^^^^^^ variant or associated item not found in `anchor_lang::error::ErrorCode`

error[E0599]: no variant or associated item named `CandyNotMatch` found for enum `anchor_lang::error::ErrorCode` in the current scope
   --> programs/staking/src/lib.rs:331:35
    |
331 |             return Err(ErrorCode::CandyNotMatch.into());
    |                                   ^^^^^^^^^^^^^ variant or associated item not found in `anchor_lang::error::ErrorCode`

Some errors have detailed explanations: E0277, E0432, E0599.

Solution 1:^[1]

cargo install --git https://github.com/project-serum/anchor --tag v0.24.2 anchor-cli --locked

Then in the cargo.toml of the projects folder, make your anchor-lang=0.24.2 instead 0.20.1

I was having the same issue and this worked for me

Solution 2:^[2]

You have to downgrade the anchor version to 0.21.0

If you are on a windows machine, you can simply use npm i -g @project-serum/anchor-cli@^0.21.0

But if you are on WSL or Ubuntu you have to run sudo apt-get update && sudo apt-get upgrade && sudo apt-get install -y pkg-config build-essential libudev-dev

Then build specific version from source using cargo install --git https://github.com/project-serum/anchor --tag v0.21.0 anchor-cli --locked

Remember you should have to cargo installed to run this command

If the problem persists,your ~/.cargo/registry/index directory is corrupted. Delete it and run cargo update again."

For opening it in WSL, just type explorer.exe . in the ubuntu terminal

Don't forget the .

Solution 3:^[3]

It is no advisable to delete your .cargo/registry/index it can break your cargo if you are not careful just downgrade or upgrade with: cargo install --git https://github.com/project-serum/anchor --tag v0.21.0 anchor-cli --locked then specify to the version you want.

Sources

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Source: Stack Overflow

Solution	Source
Solution 1	desertnaut
Solution 2	desertnaut
Solution 3	arze

'Anchor build error versions of anchor-spl and anchor-lang

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]

Solution 3:^[3]