[INFO] updating cached repository https://github.com/b00f/durian
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9d84bdb68f040f3cd029e859da11f07b79a00570
[INFO] checking b00f/durian against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fb00f%2Fdurian" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/b00f/durian on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/b00f/durian
[INFO] finished tweaking git repo https://github.com/b00f/durian
[INFO] tweaked toml for git repo https://github.com/b00f/durian written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/b00f/durian already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9c7c02f84944e6ab0b8bf62a56542e78f5305994421b08b1dbd159e079a1a3d7
[INFO] running `"docker" "start" "-a" "9c7c02f84944e6ab0b8bf62a56542e78f5305994421b08b1dbd159e079a1a3d7"`
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[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/stateless_ext.rs:99:34
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn initial_storage_at(&self, key: &H256) -> vm::Result<H256> {
[INFO] [stderr]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:124:22
[INFO] [stderr]     |
[INFO] [stderr] 124 |     fn exists(&self, address: &Address) -> vm::Result<bool> {
[INFO] [stderr]     |                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:130:35
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn exists_and_not_null(&self, address: &Address) -> vm::Result<bool> {
[INFO] [stderr]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:142:23
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn balance(&self, address: &Address) -> vm::Result<U256> {
[INFO] [stderr]     |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `number`
[INFO] [stderr]    --> src/stateless_ext.rs:148:29
[INFO] [stderr]     |
[INFO] [stderr] 148 |     fn blockhash(&mut self, number: &U256) -> H256 {
[INFO] [stderr]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas`
[INFO] [stderr]    --> src/stateless_ext.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 |         gas: &U256,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_gas`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/stateless_ext.rs:155:9
[INFO] [stderr]     |
[INFO] [stderr] 155 |         value: &U256,
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]    --> src/stateless_ext.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |         code: &[u8],
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parent_version`
[INFO] [stderr]    --> src/stateless_ext.rs:157:9
[INFO] [stderr]     |
[INFO] [stderr] 157 |         parent_version: &U256,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_version`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address_scheme`
[INFO] [stderr]    --> src/stateless_ext.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 |         address_scheme: CreateContractAddress,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address_scheme`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trap`
[INFO] [stderr]    --> src/stateless_ext.rs:159:9
[INFO] [stderr]     |
[INFO] [stderr] 159 |         trap: bool,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_trap`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas`
[INFO] [stderr]    --> src/stateless_ext.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |         gas: &U256,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_gas`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sender_address`
[INFO] [stderr]    --> src/stateless_ext.rs:168:9
[INFO] [stderr]     |
[INFO] [stderr] 168 |         sender_address: &Address,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sender_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `receive_address`
[INFO] [stderr]    --> src/stateless_ext.rs:169:9
[INFO] [stderr]     |
[INFO] [stderr] 169 |         receive_address: &Address,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_receive_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/stateless_ext.rs:170:9
[INFO] [stderr]     |
[INFO] [stderr] 170 |         value: Option<U256>,
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/stateless_ext.rs:171:9
[INFO] [stderr]     |
[INFO] [stderr] 171 |         data: &[u8],
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code_address`
[INFO] [stderr]    --> src/stateless_ext.rs:172:9
[INFO] [stderr]     |
[INFO] [stderr] 172 |         code_address: &Address,
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_code_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `call_type`
[INFO] [stderr]    --> src/stateless_ext.rs:173:9
[INFO] [stderr]     |
[INFO] [stderr] 173 |         call_type: CallType,
[INFO] [stderr]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_call_type`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trap`
[INFO] [stderr]    --> src/stateless_ext.rs:174:9
[INFO] [stderr]     |
[INFO] [stderr] 174 |         trap: bool,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_trap`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:180:23
[INFO] [stderr]     |
[INFO] [stderr] 180 |     fn extcode(&self, address: &Address) -> vm::Result<Option<Arc<Bytes>>> {
[INFO] [stderr]     |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:185:27
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn extcodehash(&self, address: &Address) -> vm::Result<Option<H256>> {
[INFO] [stderr]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:189:27
[INFO] [stderr]     |
[INFO] [stderr] 189 |     fn extcodesize(&self, address: &Address) -> vm::Result<Option<usize>> {
[INFO] [stderr]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas`
[INFO] [stderr]    --> src/stateless_ext.rs:204:18
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn ret(self, gas: &U256, data: &ReturnData, apply_state: bool) -> vm::Result<U256>
[INFO] [stderr]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_gas`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/stateless_ext.rs:204:30
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn ret(self, gas: &U256, data: &ReturnData, apply_state: bool) -> vm::Result<U256>
[INFO] [stderr]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `apply_state`
[INFO] [stderr]    --> src/stateless_ext.rs:204:49
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn ret(self, gas: &U256, data: &ReturnData, apply_state: bool) -> vm::Result<U256>
[INFO] [stderr]     |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_apply_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `refund_address`
[INFO] [stderr]    --> src/stateless_ext.rs:211:27
[INFO] [stderr]     |
[INFO] [stderr] 211 |     fn suicide(&mut self, refund_address: &Address) -> vm::Result<()> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_refund_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/stateless_ext.rs:232:37
[INFO] [stderr]     |
[INFO] [stderr] 232 |     fn add_sstore_refund(&mut self, value: usize) {
[INFO] [stderr]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/stateless_ext.rs:236:37
[INFO] [stderr]     |
[INFO] [stderr] 236 |     fn sub_sstore_refund(&mut self, value: usize) {
[INFO] [stderr]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pc`
[INFO] [stderr]    --> src/stateless_ext.rs:240:42
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn trace_next_instruction(&mut self, pc: usize, instruction: u8, current_gas: U256) -> bool {
[INFO] [stderr]     |                                          ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instruction`
[INFO] [stderr]    --> src/stateless_ext.rs:240:53
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn trace_next_instruction(&mut self, pc: usize, instruction: u8, current_gas: U256) -> bool {
[INFO] [stderr]     |                                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current_gas`
[INFO] [stderr]    --> src/stateless_ext.rs:240:70
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn trace_next_instruction(&mut self, pc: usize, instruction: u8, current_gas: U256) -> bool {
[INFO] [stderr]     |                                                                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_gas`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pc`
[INFO] [stderr]    --> src/stateless_ext.rs:248:9
[INFO] [stderr]     |
[INFO] [stderr] 248 |         pc: usize,
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instruction`
[INFO] [stderr]    --> src/stateless_ext.rs:249:9
[INFO] [stderr]     |
[INFO] [stderr] 249 |         instruction: u8,
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas_cost`
[INFO] [stderr]    --> src/stateless_ext.rs:250:9
[INFO] [stderr]     |
[INFO] [stderr] 250 |         gas_cost: U256,
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gas_cost`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mem_written`
[INFO] [stderr]    --> src/stateless_ext.rs:251:9
[INFO] [stderr]     |
[INFO] [stderr] 251 |         mem_written: Option<(usize, usize)>,
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mem_written`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `store_written`
[INFO] [stderr]    --> src/stateless_ext.rs:252:9
[INFO] [stderr]     |
[INFO] [stderr] 252 |         store_written: Option<(U256, U256)>,
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_store_written`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas_used`
[INFO] [stderr]    --> src/stateless_ext.rs:262:34
[INFO] [stderr]     |
[INFO] [stderr] 262 |     fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
[INFO] [stderr]     |                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gas_used`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack_push`
[INFO] [stderr]    --> src/stateless_ext.rs:262:50
[INFO] [stderr]     |
[INFO] [stderr] 262 |     fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
[INFO] [stderr]     |                                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_push`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mem`
[INFO] [stderr]    --> src/stateless_ext.rs:262:71
[INFO] [stderr]     |
[INFO] [stderr] 262 |     fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
[INFO] [stderr]     |                                                                       ^^^ help: if this is intentional, prefix it with an underscore: `_mem`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/stateless_ext.rs:99:34
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn initial_storage_at(&self, key: &H256) -> vm::Result<H256> {
[INFO] [stderr]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:124:22
[INFO] [stderr]     |
[INFO] [stderr] 124 |     fn exists(&self, address: &Address) -> vm::Result<bool> {
[INFO] [stderr]     |                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:130:35
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn exists_and_not_null(&self, address: &Address) -> vm::Result<bool> {
[INFO] [stderr]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:142:23
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn balance(&self, address: &Address) -> vm::Result<U256> {
[INFO] [stderr]     |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `number`
[INFO] [stderr]    --> src/stateless_ext.rs:148:29
[INFO] [stderr]     |
[INFO] [stderr] 148 |     fn blockhash(&mut self, number: &U256) -> H256 {
[INFO] [stderr]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas`
[INFO] [stderr]    --> src/stateless_ext.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 |         gas: &U256,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_gas`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/stateless_ext.rs:155:9
[INFO] [stderr]     |
[INFO] [stderr] 155 |         value: &U256,
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]    --> src/stateless_ext.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |         code: &[u8],
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parent_version`
[INFO] [stderr]    --> src/stateless_ext.rs:157:9
[INFO] [stderr]     |
[INFO] [stderr] 157 |         parent_version: &U256,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_version`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address_scheme`
[INFO] [stderr]    --> src/stateless_ext.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 |         address_scheme: CreateContractAddress,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address_scheme`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trap`
[INFO] [stderr]    --> src/stateless_ext.rs:159:9
[INFO] [stderr]     |
[INFO] [stderr] 159 |         trap: bool,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_trap`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas`
[INFO] [stderr]    --> src/stateless_ext.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |         gas: &U256,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_gas`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sender_address`
[INFO] [stderr]    --> src/stateless_ext.rs:168:9
[INFO] [stderr]     |
[INFO] [stderr] 168 |         sender_address: &Address,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sender_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `receive_address`
[INFO] [stderr]    --> src/stateless_ext.rs:169:9
[INFO] [stderr]     |
[INFO] [stderr] 169 |         receive_address: &Address,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_receive_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/stateless_ext.rs:170:9
[INFO] [stderr]     |
[INFO] [stderr] 170 |         value: Option<U256>,
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/stateless_ext.rs:171:9
[INFO] [stderr]     |
[INFO] [stderr] 171 |         data: &[u8],
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code_address`
[INFO] [stderr]    --> src/stateless_ext.rs:172:9
[INFO] [stderr]     |
[INFO] [stderr] 172 |         code_address: &Address,
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_code_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `call_type`
[INFO] [stderr]    --> src/stateless_ext.rs:173:9
[INFO] [stderr]     |
[INFO] [stderr] 173 |         call_type: CallType,
[INFO] [stderr]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_call_type`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trap`
[INFO] [stderr]    --> src/stateless_ext.rs:174:9
[INFO] [stderr]     |
[INFO] [stderr] 174 |         trap: bool,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_trap`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:180:23
[INFO] [stderr]     |
[INFO] [stderr] 180 |     fn extcode(&self, address: &Address) -> vm::Result<Option<Arc<Bytes>>> {
[INFO] [stderr]     |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:185:27
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn extcodehash(&self, address: &Address) -> vm::Result<Option<H256>> {
[INFO] [stderr]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/stateless_ext.rs:189:27
[INFO] [stderr]     |
[INFO] [stderr] 189 |     fn extcodesize(&self, address: &Address) -> vm::Result<Option<usize>> {
[INFO] [stderr]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas`
[INFO] [stderr]    --> src/stateless_ext.rs:204:18
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn ret(self, gas: &U256, data: &ReturnData, apply_state: bool) -> vm::Result<U256>
[INFO] [stderr]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_gas`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/stateless_ext.rs:204:30
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn ret(self, gas: &U256, data: &ReturnData, apply_state: bool) -> vm::Result<U256>
[INFO] [stderr]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `apply_state`
[INFO] [stderr]    --> src/stateless_ext.rs:204:49
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn ret(self, gas: &U256, data: &ReturnData, apply_state: bool) -> vm::Result<U256>
[INFO] [stderr]     |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_apply_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `refund_address`
[INFO] [stderr]    --> src/stateless_ext.rs:211:27
[INFO] [stderr]     |
[INFO] [stderr] 211 |     fn suicide(&mut self, refund_address: &Address) -> vm::Result<()> {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_refund_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/stateless_ext.rs:232:37
[INFO] [stderr]     |
[INFO] [stderr] 232 |     fn add_sstore_refund(&mut self, value: usize) {
[INFO] [stderr]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/stateless_ext.rs:236:37
[INFO] [stderr]     |
[INFO] [stderr] 236 |     fn sub_sstore_refund(&mut self, value: usize) {
[INFO] [stderr]     |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pc`
[INFO] [stderr]    --> src/stateless_ext.rs:240:42
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn trace_next_instruction(&mut self, pc: usize, instruction: u8, current_gas: U256) -> bool {
[INFO] [stderr]     |                                          ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instruction`
[INFO] [stderr]    --> src/stateless_ext.rs:240:53
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn trace_next_instruction(&mut self, pc: usize, instruction: u8, current_gas: U256) -> bool {
[INFO] [stderr]     |                                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current_gas`
[INFO] [stderr]    --> src/stateless_ext.rs:240:70
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn trace_next_instruction(&mut self, pc: usize, instruction: u8, current_gas: U256) -> bool {
[INFO] [stderr]     |                                                                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_gas`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pc`
[INFO] [stderr]    --> src/stateless_ext.rs:248:9
[INFO] [stderr]     |
[INFO] [stderr] 248 |         pc: usize,
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_pc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instruction`
[INFO] [stderr]    --> src/stateless_ext.rs:249:9
[INFO] [stderr]     |
[INFO] [stderr] 249 |         instruction: u8,
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas_cost`
[INFO] [stderr]    --> src/stateless_ext.rs:250:9
[INFO] [stderr]     |
[INFO] [stderr] 250 |         gas_cost: U256,
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gas_cost`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mem_written`
[INFO] [stderr]    --> src/stateless_ext.rs:251:9
[INFO] [stderr]     |
[INFO] [stderr] 251 |         mem_written: Option<(usize, usize)>,
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mem_written`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `store_written`
[INFO] [stderr]    --> src/stateless_ext.rs:252:9
[INFO] [stderr]     |
[INFO] [stderr] 252 |         store_written: Option<(U256, U256)>,
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_store_written`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gas_used`
[INFO] [stderr]    --> src/stateless_ext.rs:262:34
[INFO] [stderr]     |
[INFO] [stderr] 262 |     fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
[INFO] [stderr]     |                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gas_used`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack_push`
[INFO] [stderr]    --> src/stateless_ext.rs:262:50
[INFO] [stderr]     |
[INFO] [stderr] 262 |     fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
[INFO] [stderr]     |                                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_push`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mem`
[INFO] [stderr]    --> src/stateless_ext.rs:262:71
[INFO] [stderr]     |
[INFO] [stderr] 262 |     fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
[INFO] [stderr]     |                                                                       ^^^ help: if this is intentional, prefix it with an underscore: `_mem`
[INFO] [stderr] 
[INFO] [stderr] warning: 39 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 39 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 38s
[INFO] running `"docker" "inspect" "9c7c02f84944e6ab0b8bf62a56542e78f5305994421b08b1dbd159e079a1a3d7"`
[INFO] running `"docker" "rm" "-f" "9c7c02f84944e6ab0b8bf62a56542e78f5305994421b08b1dbd159e079a1a3d7"`
[INFO] [stdout] 9c7c02f84944e6ab0b8bf62a56542e78f5305994421b08b1dbd159e079a1a3d7