v2.5.8-stable (#11041)

* add more tx tests (#11038)
* Fix parallel transactions race-condition (#10995)
* Add blake2_f precompile (#11017)
* [trace] introduce trace failed to Ext (#11019)
* Edit publish-onchain.sh to use https (#11016)
* Fix deadlock in network-devp2p (#11013)
* EIP 1108: Reduce alt_bn128 precompile gas costs (#11008)
* xDai chain support and nodes list update (#10989)
* EIP 2028: transaction gas lowered from 68 to 16 (#10987)
* EIP-1344 Add CHAINID op-code (#10983)
* manual publish jobs for releases, no changes for nightlies (#10977)
* [blooms-db] Fix benchmarks (#10974)
* Verify transaction against its block during import (#10954)
* Better error message for rpc gas price errors (#10931)
* tx-pool: accept local tx with higher gas price when pool full (#10901)
* Fix fork choice (#10837)
* Cleanup unused vm dependencies (#10787)
* Fix compilation on recent nightlies (#10991)

rpc/src/v1/helpers/errors.rs

@@ -408,8 +408,11 @@ pub fn transaction_message(error: &TransactionError) -> String {
 	match *error {
 		AlreadyImported => "Transaction with the same hash was already imported.".into(),
 		Old => "Transaction nonce is too low. Try incrementing the nonce.".into(),
-		TooCheapToReplace => {
-			"Transaction gas price is too low. There is another transaction with same nonce in the queue. Try increasing the gas price or incrementing the nonce.".into()
+		TooCheapToReplace { prev, new } => {
+			format!("Transaction gas price {} is too low. There is another transaction with same nonce in the queue{}. Try increasing the gas price or incrementing the nonce.",
+					new.map(|gas| format!("{}wei", gas)).unwrap_or("supplied".into()),
+					prev.map(|gas| format!(" with gas price: {}wei", gas)).unwrap_or("".into())
+			)
 		}
 		LimitReached => {
 			"There are too many transactions in the queue. Your transaction was dropped due to limit. Try increasing the fee.".into()