Dec 19 18:51:13.438 INFO checking collin5/bc-rust against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 18:51:13.439 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/collin5/bc-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 18:51:13.738 INFO [stdout] b4bfb5e1efcf2a766a95c2bcd442cb80e41620ab8126df4e9fe56ac2509a4fbc
Dec 19 18:51:13.746 INFO running `"docker" "start" "-a" "b4bfb5e1efcf2a766a95c2bcd442cb80e41620ab8126df4e9fe56ac2509a4fbc"`
Dec 19 18:51:14.524 INFO [stderr]     Checking blockchain v0.1.0 (/opt/crater/workdir)
Dec 19 18:51:14.944 INFO [stderr] warning: unused import: `std::io`
Dec 19 18:51:14.944 INFO [stderr]  --> src/main.rs:4:5
Dec 19 18:51:14.944 INFO [stderr]   |
Dec 19 18:51:14.944 INFO [stderr] 4 | use std::io;
Dec 19 18:51:14.944 INFO [stderr]   |     ^^^^^^^
Dec 19 18:51:14.944 INFO [stderr]   |
Dec 19 18:51:14.944 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 18:51:14.944 INFO [stderr] 
Dec 19 18:51:14.944 INFO [stderr] warning: unused import: `std::io::Write`
Dec 19 18:51:14.944 INFO [stderr]  --> src/main.rs:5:5
Dec 19 18:51:14.944 INFO [stderr]   |
Dec 19 18:51:14.944 INFO [stderr] 5 | use std::io::Write;
Dec 19 18:51:14.944 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 18:51:14.944 INFO [stderr] 
Dec 19 18:51:14.944 INFO [stderr] warning: unused import: `std::process`
Dec 19 18:51:14.944 INFO [stderr]  --> src/main.rs:6:5
Dec 19 18:51:14.944 INFO [stderr]   |
Dec 19 18:51:14.944 INFO [stderr] 6 | use std::process;
Dec 19 18:51:14.944 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 19 18:51:14.944 INFO [stderr] 
Dec 19 18:51:14.972 INFO [stderr] warning: unused import: `std::io`
Dec 19 18:51:14.972 INFO [stderr]  --> src/main.rs:4:5
Dec 19 18:51:14.972 INFO [stderr]   |
Dec 19 18:51:14.972 INFO [stderr] 4 | use std::io;
Dec 19 18:51:14.972 INFO [stderr]   |     ^^^^^^^
Dec 19 18:51:14.972 INFO [stderr]   |
Dec 19 18:51:14.972 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 18:51:14.972 INFO [stderr] 
Dec 19 18:51:14.972 INFO [stderr] warning: unused import: `std::io::Write`
Dec 19 18:51:14.972 INFO [stderr]  --> src/main.rs:5:5
Dec 19 18:51:14.972 INFO [stderr]   |
Dec 19 18:51:14.972 INFO [stderr] 5 | use std::io::Write;
Dec 19 18:51:14.972 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 18:51:14.972 INFO [stderr] 
Dec 19 18:51:14.972 INFO [stderr] warning: unused import: `std::process`
Dec 19 18:51:14.972 INFO [stderr]  --> src/main.rs:6:5
Dec 19 18:51:14.972 INFO [stderr]   |
Dec 19 18:51:14.972 INFO [stderr] 6 | use std::process;
Dec 19 18:51:14.972 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 19 18:51:14.972 INFO [stderr] 
Dec 19 18:51:15.141 INFO [stderr] warning: struct is never constructed: `Blockheader`
Dec 19 18:51:15.141 INFO [stderr]   --> src/blockchain.rs:17:1
Dec 19 18:51:15.141 INFO [stderr]    |
Dec 19 18:51:15.141 INFO [stderr] 17 | pub struct Blockheader {
Dec 19 18:51:15.141 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.141 INFO [stderr]    |
Dec 19 18:51:15.141 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 18:51:15.141 INFO [stderr] 
Dec 19 18:51:15.141 INFO [stderr] warning: struct is never constructed: `Block`
Dec 19 18:51:15.141 INFO [stderr]   --> src/blockchain.rs:26:1
Dec 19 18:51:15.141 INFO [stderr]    |
Dec 19 18:51:15.141 INFO [stderr] 26 | pub struct Block {
Dec 19 18:51:15.141 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 19 18:51:15.141 INFO [stderr] 
Dec 19 18:51:15.141 INFO [stderr] warning: struct is never constructed: `Chain`
Dec 19 18:51:15.141 INFO [stderr]   --> src/blockchain.rs:32:1
Dec 19 18:51:15.141 INFO [stderr]    |
Dec 19 18:51:15.141 INFO [stderr] 32 | pub struct Chain {
Dec 19 18:51:15.141 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 19 18:51:15.141 INFO [stderr] 
Dec 19 18:51:15.141 INFO [stderr] warning: method is never used: `new`
Dec 19 18:51:15.141 INFO [stderr]   --> src/blockchain.rs:41:5
Dec 19 18:51:15.141 INFO [stderr]    |
Dec 19 18:51:15.141 INFO [stderr] 41 |     pub fn new(addr: String, difficulty: u32) -> Chain {
Dec 19 18:51:15.141 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.141 INFO [stderr] 
Dec 19 18:51:15.141 INFO [stderr] warning: method is never used: `new_trans`
Dec 19 18:51:15.141 INFO [stderr]   --> src/blockchain.rs:53:5
Dec 19 18:51:15.141 INFO [stderr]    |
Dec 19 18:51:15.141 INFO [stderr] 53 |     pub fn new_trans(&mut self, sender: String, reciever: String, amount: f32) -> bool {
Dec 19 18:51:15.141 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.141 INFO [stderr] 
Dec 19 18:51:15.141 INFO [stderr] warning: method is never used: `last_hash`
Dec 19 18:51:15.141 INFO [stderr]   --> src/blockchain.rs:63:5
Dec 19 18:51:15.141 INFO [stderr]    |
Dec 19 18:51:15.141 INFO [stderr] 63 |     pub fn last_hash(&self) -> String {
Dec 19 18:51:15.141 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.141 INFO [stderr] 
Dec 19 18:51:15.142 INFO [stderr] warning: method is never used: `update_difficulty`
Dec 19 18:51:15.142 INFO [stderr]   --> src/blockchain.rs:71:5
Dec 19 18:51:15.142 INFO [stderr]    |
Dec 19 18:51:15.142 INFO [stderr] 71 |     pub fn update_difficulty(&mut self, difficulty: u32) -> bool {
Dec 19 18:51:15.142 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.142 INFO [stderr] 
Dec 19 18:51:15.142 INFO [stderr] warning: method is never used: `update_reward`
Dec 19 18:51:15.142 INFO [stderr]   --> src/blockchain.rs:76:5
Dec 19 18:51:15.142 INFO [stderr]    |
Dec 19 18:51:15.142 INFO [stderr] 76 |     pub fn update_reward(&mut self, reward: f32) -> bool {
Dec 19 18:51:15.142 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.142 INFO [stderr] 
Dec 19 18:51:15.142 INFO [stderr] warning: method is never used: `gen_new_block`
Dec 19 18:51:15.142 INFO [stderr]   --> src/blockchain.rs:81:5
Dec 19 18:51:15.142 INFO [stderr]    |
Dec 19 18:51:15.142 INFO [stderr] 81 |     pub fn gen_new_block(&mut self) -> bool {
Dec 19 18:51:15.142 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.142 INFO [stderr] 
Dec 19 18:51:15.142 INFO [stderr] warning: method is never used: `get_merkle`
Dec 19 18:51:15.142 INFO [stderr]    --> src/blockchain.rs:113:5
Dec 19 18:51:15.142 INFO [stderr]     |
Dec 19 18:51:15.142 INFO [stderr] 113 |     fn get_merkle(current_trans: Vec<Transation>) -> String {
Dec 19 18:51:15.142 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.142 INFO [stderr] 
Dec 19 18:51:15.142 INFO [stderr] warning: method is never used: `proof_of_work`
Dec 19 18:51:15.142 INFO [stderr]    --> src/blockchain.rs:136:5
Dec 19 18:51:15.142 INFO [stderr]     |
Dec 19 18:51:15.142 INFO [stderr] 136 |     pub fn proof_of_work(header: &mut Blockheader) {
Dec 19 18:51:15.142 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.142 INFO [stderr] 
Dec 19 18:51:15.142 INFO [stderr] warning: method is never used: `hash`
Dec 19 18:51:15.142 INFO [stderr]    --> src/blockchain.rs:156:5
Dec 19 18:51:15.142 INFO [stderr]     |
Dec 19 18:51:15.142 INFO [stderr] 156 |     pub fn hash<T: serde::Serialize>(item: &T) -> String {
Dec 19 18:51:15.142 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.142 INFO [stderr] 
Dec 19 18:51:15.142 INFO [stderr] warning: method is never used: `hex_to_str`
Dec 19 18:51:15.142 INFO [stderr]    --> src/blockchain.rs:165:5
Dec 19 18:51:15.142 INFO [stderr]     |
Dec 19 18:51:15.142 INFO [stderr] 165 |     pub fn hex_to_str(res: &[u8]) -> String {
Dec 19 18:51:15.142 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.142 INFO [stderr] 
Dec 19 18:51:15.144 INFO [stderr] warning: struct is never constructed: `Blockheader`
Dec 19 18:51:15.144 INFO [stderr]   --> src/blockchain.rs:17:1
Dec 19 18:51:15.144 INFO [stderr]    |
Dec 19 18:51:15.144 INFO [stderr] 17 | pub struct Blockheader {
Dec 19 18:51:15.144 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.144 INFO [stderr]    |
Dec 19 18:51:15.144 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 18:51:15.144 INFO [stderr] 
Dec 19 18:51:15.144 INFO [stderr] warning: struct is never constructed: `Block`
Dec 19 18:51:15.144 INFO [stderr]   --> src/blockchain.rs:26:1
Dec 19 18:51:15.144 INFO [stderr]    |
Dec 19 18:51:15.144 INFO [stderr] 26 | pub struct Block {
Dec 19 18:51:15.144 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 19 18:51:15.144 INFO [stderr] 
Dec 19 18:51:15.144 INFO [stderr] warning: struct is never constructed: `Chain`
Dec 19 18:51:15.144 INFO [stderr]   --> src/blockchain.rs:32:1
Dec 19 18:51:15.144 INFO [stderr]    |
Dec 19 18:51:15.144 INFO [stderr] 32 | pub struct Chain {
Dec 19 18:51:15.144 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 19 18:51:15.144 INFO [stderr] 
Dec 19 18:51:15.144 INFO [stderr] warning: method is never used: `new`
Dec 19 18:51:15.144 INFO [stderr]   --> src/blockchain.rs:41:5
Dec 19 18:51:15.144 INFO [stderr]    |
Dec 19 18:51:15.144 INFO [stderr] 41 |     pub fn new(addr: String, difficulty: u32) -> Chain {
Dec 19 18:51:15.144 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.144 INFO [stderr] 
Dec 19 18:51:15.144 INFO [stderr] warning: method is never used: `new_trans`
Dec 19 18:51:15.144 INFO [stderr]   --> src/blockchain.rs:53:5
Dec 19 18:51:15.144 INFO [stderr]    |
Dec 19 18:51:15.144 INFO [stderr] 53 |     pub fn new_trans(&mut self, sender: String, reciever: String, amount: f32) -> bool {
Dec 19 18:51:15.144 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.144 INFO [stderr] 
Dec 19 18:51:15.144 INFO [stderr] warning: method is never used: `last_hash`
Dec 19 18:51:15.144 INFO [stderr]   --> src/blockchain.rs:63:5
Dec 19 18:51:15.144 INFO [stderr]    |
Dec 19 18:51:15.144 INFO [stderr] 63 |     pub fn last_hash(&self) -> String {
Dec 19 18:51:15.144 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.144 INFO [stderr] 
Dec 19 18:51:15.144 INFO [stderr] warning: method is never used: `update_difficulty`
Dec 19 18:51:15.144 INFO [stderr]   --> src/blockchain.rs:71:5
Dec 19 18:51:15.144 INFO [stderr]    |
Dec 19 18:51:15.144 INFO [stderr] 71 |     pub fn update_difficulty(&mut self, difficulty: u32) -> bool {
Dec 19 18:51:15.144 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.144 INFO [stderr] 
Dec 19 18:51:15.144 INFO [stderr] warning: method is never used: `update_reward`
Dec 19 18:51:15.145 INFO [stderr]   --> src/blockchain.rs:76:5
Dec 19 18:51:15.145 INFO [stderr]    |
Dec 19 18:51:15.145 INFO [stderr] 76 |     pub fn update_reward(&mut self, reward: f32) -> bool {
Dec 19 18:51:15.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.145 INFO [stderr] 
Dec 19 18:51:15.145 INFO [stderr] warning: method is never used: `gen_new_block`
Dec 19 18:51:15.145 INFO [stderr]   --> src/blockchain.rs:81:5
Dec 19 18:51:15.145 INFO [stderr]    |
Dec 19 18:51:15.145 INFO [stderr] 81 |     pub fn gen_new_block(&mut self) -> bool {
Dec 19 18:51:15.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.145 INFO [stderr] 
Dec 19 18:51:15.145 INFO [stderr] warning: method is never used: `get_merkle`
Dec 19 18:51:15.145 INFO [stderr]    --> src/blockchain.rs:113:5
Dec 19 18:51:15.145 INFO [stderr]     |
Dec 19 18:51:15.145 INFO [stderr] 113 |     fn get_merkle(current_trans: Vec<Transation>) -> String {
Dec 19 18:51:15.145 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.145 INFO [stderr] 
Dec 19 18:51:15.145 INFO [stderr] warning: method is never used: `proof_of_work`
Dec 19 18:51:15.145 INFO [stderr]    --> src/blockchain.rs:136:5
Dec 19 18:51:15.145 INFO [stderr]     |
Dec 19 18:51:15.145 INFO [stderr] 136 |     pub fn proof_of_work(header: &mut Blockheader) {
Dec 19 18:51:15.145 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.145 INFO [stderr] 
Dec 19 18:51:15.145 INFO [stderr] warning: method is never used: `hash`
Dec 19 18:51:15.145 INFO [stderr]    --> src/blockchain.rs:156:5
Dec 19 18:51:15.145 INFO [stderr]     |
Dec 19 18:51:15.145 INFO [stderr] 156 |     pub fn hash<T: serde::Serialize>(item: &T) -> String {
Dec 19 18:51:15.145 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.145 INFO [stderr] 
Dec 19 18:51:15.145 INFO [stderr] warning: method is never used: `hex_to_str`
Dec 19 18:51:15.145 INFO [stderr]    --> src/blockchain.rs:165:5
Dec 19 18:51:15.145 INFO [stderr]     |
Dec 19 18:51:15.145 INFO [stderr] 165 |     pub fn hex_to_str(res: &[u8]) -> String {
Dec 19 18:51:15.145 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:51:15.145 INFO [stderr] 
Dec 19 18:51:15.166 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
Dec 19 18:51:15.468 INFO running `"docker" "inspect" "b4bfb5e1efcf2a766a95c2bcd442cb80e41620ab8126df4e9fe56ac2509a4fbc"`
Dec 19 18:51:15.682 INFO running `"docker" "rm" "-f" "b4bfb5e1efcf2a766a95c2bcd442cb80e41620ab8126df4e9fe56ac2509a4fbc"`
Dec 19 18:51:15.844 INFO [stdout] b4bfb5e1efcf2a766a95c2bcd442cb80e41620ab8126df4e9fe56ac2509a4fbc