Can't compile standalone ft_example from most recent sdk

I am trying to get this example

https://github.com/near/near-sdk-rs/tree/master/examples/fungible-token

to build locally as a standalone folder from the sdk, so I changed all 3 Cargo.toml's to use

near-sdk = { git = "https://github.com/near/near-sdk-rs.git" }
near-contract-standards = { git = "https://github.com/near/near-sdk-rs.git" }

and got this error

error[E0424]: expected value, found module `self`
  --> ft/src/lib.rs:63:1
   |
63 | near_contract_standards::impl_fungible_token_core!(Contract, token, on_tokens_burned);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   | |
   | `self` value is a keyword only available in methods with a `self` parameter
   | this function has a `self` parameter, but a macro invocation can only access identifiers it receives from parameters
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find value `sender_id` in this scope
  --> ft/src/lib.rs:63:1
   |
63 | near_contract_standards::impl_fungible_token_core!(Contract, token, on_tokens_burned);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find value `burned_amount` in this scope
  --> ft/src/lib.rs:63:1
   |
63 | near_contract_standards::impl_fungible_token_core!(Contract, token, on_tokens_burned);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0424]: expected value, found module `self`
  --> ft/src/lib.rs:65:1
   |
65 | near_contract_standards::impl_fungible_token_ar!(Contract, token, on_account_closed);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   | |
   | `self` value is a keyword only available in methods with a `self` parameter
   | this function has a `self` parameter, but a macro invocation can only access identifiers it receives from parameters
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find value `account_id` in this scope
  --> ft/src/lib.rs:65:1
   |
65 | near_contract_standards::impl_fungible_token_ar!(Contract, token, on_account_closed);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find value `balance` in this scope
  --> ft/src/lib.rs:65:1
   |
65 | near_contract_standards::impl_fungible_token_ar!(Contract, token, on_account_closed);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0308]: mismatched types
  --> ft/src/lib.rs:48:57
   |
48 |         let mut this = Self { token: FungibleToken::new(b"a"), reference, reference_hash };
   |                                                         ^^^^
   |                                                         |
   |                                                         expected struct `Vec`, found `&[u8; 1]`
   |                                                         help: try using a conversion method: `b"a".to_vec()`
   |
   = note: expected struct `Vec<u8>`
           found reference `&'static [u8; 1]`

error[E0308]: mismatched types
  --> ft/src/lib.rs:77:24
   |
77 |             reference: self.reference.clone(),
   |                        ^^^^^^^^^^^^^^^^^^^^^^
   |                        |
   |                        expected enum `std::option::Option`, found struct `std::string::String`
   |                        help: try using a variant of the expected enum: `Some(self.reference.clone())`
   |
   = note: expected enum `std::option::Option<std::string::String>`
            found struct `std::string::String`

error[E0308]: mismatched types
  --> ft/src/lib.rs:78:29
   |
78 |             reference_hash: self.reference_hash.clone(),
   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |                             |
   |                             expected enum `std::option::Option`, found struct `Base64VecU8`
   |                             help: try using a variant of the expected enum: `Some(self.reference_hash.clone())`
   |
   = note: expected enum `std::option::Option<Base64VecU8>`
            found struct `Base64VecU8`

error: aborting due to 9 previous errors

Some errors have detailed explanations: E0308, E0424, E0425.
For more information about an error, try `rustc --explain E0308`.
error: could not compile `fungible-token`

when I tried using the following version of the crates

near-sdk = { version = "=3.0.0-pre.2" }
near-contract-standards = { version = "=0.1.0-pre.2"}

I got this error

error: no rules expected the token ,
  --> ft/src/lib.rs:63:67
   |
63 | near_contract_standards::impl_fungible_token_core!(Contract, token, on_tokens_burned);
   |                                                                   ^ no rules expected this token in macro call

error[E0432]: unresolved import near_contract_standards::fungible_token::metadata::FT_METADATA_SPEC
  --> ft/src/lib.rs:19:59
   |
19 |     FungibleTokenMetadata, FungibleTokenMetadataProvider, FT_METADATA_SPEC,
   |                                                           ^^^^^^^^^^^^^^^^ no FT_METADATA_SPEC in fungible_token::metadata

error[E0433]: failed to resolve: could not find impl_fungible_token_ar in near_contract_standards
  --> ft/src/lib.rs:65:26
   |
65 | near_contract_standards::impl_fungible_token_ar!(Contract, token, on_account_closed);
   |                          ^^^^^^^^^^^^^^^^^^^^^^ could not find impl_fungible_token_ar in near_contract_standards

warning: unused import: PromiseOrValue
  --> ft/src/lib.rs:24:76
   |
24 | use near_sdk::{env, log, near_bindgen, AccountId, Balance, PanicOnDefault, PromiseOrValue};
   |                                                                            ^^^^^^^^^^^^^^
   |
   = note: #[warn(unused_imports)] on by default

error[E0560]: struct FungibleTokenMetadata has no field named spec
  --> ft/src/lib.rs:71:13
   |
71 |             spec: FT_METADATA_SPEC.to_string(),
   |             ^^^^ FungibleTokenMetadata does not have this field
   |
   = note: available fields are: version, name, symbol, reference, decimals

error[E0560]: struct FungibleTokenMetadata has no field named icon
  --> ft/src/lib.rs:74:13
   |
74 |             icon: Some(
   |             ^^^^ FungibleTokenMetadata does not have this field
   |
   = note: available fields are: version, name, symbol, reference, decimals

error[E0560]: struct FungibleTokenMetadata has no field named reference_hash
  --> ft/src/lib.rs:78:13
   |
78 |             reference_hash: self.reference_hash.clone(),
   |             ^^^^^^^^^^^^^^ FungibleTokenMetadata does not have this field
   |
   = note: available fields are: version, name, symbol, reference, decimals

error: aborting due to 6 previous errors; 1 warning emitted

I also had to comment out # source ../flags.sh in the build.sh, and this is the error that I get when I ./build.sh

What could be the cause of this issue? Please advise on how to proceed, would be much appreciated as I am still figuring out this new lovely ecosystem :)