upgrade to borsh 1

Cargo.toml

@@ -21,4 +21,4 @@ panic = "abort"
 # anchor-lang = { git = "https://github.com/lidofinance/anchor", branch = "solana-v1.9.28" }
 
 # https://github.com/tiny-http/tiny-http/pull/225
-tiny_http = { git = "https://github.com/tiny-http/tiny-http", rev = "f0fce7ed0bdf7439b5bd0b2d15fa82944aac30f6" }
+# tiny_http = { git = "https://github.com/tiny-http/tiny-http", rev = "f0fce7ed0bdf7439b5bd0b2d15fa82944aac30f6" }

program/Cargo.toml

@@ -12,7 +12,7 @@ no-entrypoint = []
 test-bpf = []
 
 [dependencies]
-borsh = ">=0.9"
+borsh = "^1"
 num-derive = "^0.3"
 num-traits = "^0.2"
 serde = "^1.0"

program/src/instruction.rs

@@ -218,7 +218,7 @@ impl LidoInstruction {
         // `Borsh::serialize`, which takes an arbitrary writer, and which can
         // therefore return an IoError. But when serializing to a vec, there
         // is no IO, so for this particular writer, it should never fail.
-        self.try_to_vec()
+        borsh::to_vec(self)
             .expect("Serializing an Instruction to Vec<u8> does not fail.")
     }
 }
@@ -630,11 +630,10 @@ pub fn change_reward_distribution(
     Instruction {
         program_id: *program_id,
         accounts: accounts.to_vec(),
-        data: LidoInstruction::ChangeRewardDistribution {
+        data: borsh::to_vec(&LidoInstruction::ChangeRewardDistribution {
             new_reward_distribution,
-        }
+        })
         // Serializing the instruction should never fail.
-        .try_to_vec()
         .unwrap(),
     }
 }
@@ -811,8 +810,7 @@ pub fn merge_stake(
         program_id: *program_id,
         accounts: accounts.to_vec(),
         // this can fail on OutOfMemory
-        data: LidoInstruction::MergeStakeV2 { validator_index }
-            .try_to_vec()
+        data: borsh::to_vec(&LidoInstruction::MergeStakeV2 { validator_index })
             .unwrap(), // This should never fail.
     }
 }

program/src/state.rs

@@ -13,7 +13,7 @@ use serde::Serialize;
 use borsh::{BorshDeserialize, BorshSchema, BorshSerialize};
 use solana_program::{
     account_info::AccountInfo,
-    borsh::{get_instance_packed_len, try_from_slice_unchecked},
+    borsh1::{get_instance_packed_len, try_from_slice_unchecked},
     clock::Clock,
     clock::Epoch,
     entrypoint::ProgramResult,