Dec 19 22:24:51.256 INFO checking PhdTrollSlayer/CrabChain against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 22:24:51.256 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/PhdTrollSlayer/CrabChain:/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 22:24:51.876 INFO [stdout] 7d793f2c590d36b207afca8a5ede87c92ef155f39d426db42e71c5e09ed4c21f
Dec 19 22:24:51.882 INFO running `"docker" "start" "-a" "7d793f2c590d36b207afca8a5ede87c92ef155f39d426db42e71c5e09ed4c21f"`
Dec 19 22:24:53.212 INFO [stderr]    Compiling openssl v0.10.6
Dec 19 22:24:53.212 INFO [stderr]     Checking csv v1.0.0
Dec 19 22:24:57.043 INFO [stderr]     Checking blockchain1 v0.1.0 (/opt/crater/workdir)
Dec 19 22:24:57.488 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 22:24:57.488 INFO [stderr]  --> src/lib.rs:5:1
Dec 19 22:24:57.488 INFO [stderr]   |
Dec 19 22:24:57.488 INFO [stderr] 5 | #[macro_use]
Dec 19 22:24:57.488 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 22:24:57.488 INFO [stderr]   |
Dec 19 22:24:57.488 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:24:57.489 INFO [stderr] 
Dec 19 22:24:57.489 INFO [stderr] warning: unused import: `seek`
Dec 19 22:24:57.489 INFO [stderr]  --> src/mining.rs:1:5
Dec 19 22:24:57.489 INFO [stderr]   |
Dec 19 22:24:57.489 INFO [stderr] 1 | use seek;
Dec 19 22:24:57.489 INFO [stderr]   |     ^^^^
Dec 19 22:24:57.489 INFO [stderr] 
Dec 19 22:24:57.548 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 22:24:57.548 INFO [stderr]  --> src/lib.rs:5:1
Dec 19 22:24:57.548 INFO [stderr]   |
Dec 19 22:24:57.548 INFO [stderr] 5 | #[macro_use]
Dec 19 22:24:57.548 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 22:24:57.549 INFO [stderr]   |
Dec 19 22:24:57.549 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:24:57.549 INFO [stderr] 
Dec 19 22:24:57.549 INFO [stderr] warning: unused import: `seek`
Dec 19 22:24:57.549 INFO [stderr]  --> src/mining.rs:1:5
Dec 19 22:24:57.549 INFO [stderr]   |
Dec 19 22:24:57.549 INFO [stderr] 1 | use seek;
Dec 19 22:24:57.549 INFO [stderr]   |     ^^^^
Dec 19 22:24:57.549 INFO [stderr] 
Dec 19 22:24:57.580 INFO [stderr] warning: function is never used: `find_last_block_hash`
Dec 19 22:24:57.580 INFO [stderr]  --> src/seek.rs:4:1
Dec 19 22:24:57.581 INFO [stderr]   |
Dec 19 22:24:57.581 INFO [stderr] 4 | pub fn find_last_block_hash() -> String {
Dec 19 22:24:57.581 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:24:57.581 INFO [stderr]   |
Dec 19 22:24:57.581 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 22:24:57.581 INFO [stderr] 
Dec 19 22:24:57.582 INFO [stderr] warning: function is never used: `find_last_block_id`
Dec 19 22:24:57.582 INFO [stderr]   --> src/seek.rs:28:1
Dec 19 22:24:57.582 INFO [stderr]    |
Dec 19 22:24:57.582 INFO [stderr] 28 | pub fn find_last_block_id() -> String {
Dec 19 22:24:57.582 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:24:57.582 INFO [stderr] 
Dec 19 22:24:57.583 INFO [stderr] warning: function is never used: `last_block`
Dec 19 22:24:57.583 INFO [stderr]  --> src/mining.rs:5:1
Dec 19 22:24:57.583 INFO [stderr]   |
Dec 19 22:24:57.583 INFO [stderr] 5 | pub fn last_block(prev_hash: String) -> (String, String) {
Dec 19 22:24:57.583 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:24:57.583 INFO [stderr] 
Dec 19 22:24:57.730 INFO [stderr] warning: function is never used: `find_last_block_hash`
Dec 19 22:24:57.730 INFO [stderr]  --> src/seek.rs:4:1
Dec 19 22:24:57.730 INFO [stderr]   |
Dec 19 22:24:57.731 INFO [stderr] 4 | pub fn find_last_block_hash() -> String {
Dec 19 22:24:57.731 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:24:57.731 INFO [stderr]   |
Dec 19 22:24:57.731 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 22:24:57.732 INFO [stderr] 
Dec 19 22:24:57.732 INFO [stderr] warning: function is never used: `find_last_block_id`
Dec 19 22:24:57.732 INFO [stderr]   --> src/seek.rs:28:1
Dec 19 22:24:57.732 INFO [stderr]    |
Dec 19 22:24:57.733 INFO [stderr] 28 | pub fn find_last_block_id() -> String {
Dec 19 22:24:57.733 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:24:57.733 INFO [stderr] 
Dec 19 22:24:57.733 INFO [stderr] warning: function is never used: `last_block`
Dec 19 22:24:57.734 INFO [stderr]  --> src/mining.rs:5:1
Dec 19 22:24:57.734 INFO [stderr]   |
Dec 19 22:24:57.734 INFO [stderr] 5 | pub fn last_block(prev_hash: String) -> (String, String) {
Dec 19 22:24:57.734 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:24:57.735 INFO [stderr] 
Dec 19 22:24:58.184 INFO [stderr] warning: unused import: `openssl::sha`
Dec 19 22:24:58.185 INFO [stderr]  --> src/new_block.rs:2:5
Dec 19 22:24:58.185 INFO [stderr]   |
Dec 19 22:24:58.185 INFO [stderr] 2 | use openssl::sha;
Dec 19 22:24:58.186 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 19 22:24:58.186 INFO [stderr]   |
Dec 19 22:24:58.186 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:24:58.186 INFO [stderr] 
Dec 19 22:24:58.187 INFO [stderr] warning: unused import: `hex`
Dec 19 22:24:58.187 INFO [stderr]  --> src/new_block.rs:3:5
Dec 19 22:24:58.187 INFO [stderr]   |
Dec 19 22:24:58.187 INFO [stderr] 3 | use hex;
Dec 19 22:24:58.188 INFO [stderr]   |     ^^^
Dec 19 22:24:58.188 INFO [stderr] 
Dec 19 22:24:58.188 INFO [stderr] warning: unused import: `std::error::Error`
Dec 19 22:24:58.188 INFO [stderr]  --> src/validator.rs:1:5
Dec 19 22:24:58.189 INFO [stderr]   |
Dec 19 22:24:58.189 INFO [stderr] 1 | use std::error::Error;
Dec 19 22:24:58.189 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 22:24:58.189 INFO [stderr] 
Dec 19 22:24:58.190 INFO [stderr] warning: unused import: `std::ptr::null`
Dec 19 22:24:58.190 INFO [stderr]  --> src/validator.rs:4:5
Dec 19 22:24:58.190 INFO [stderr]   |
Dec 19 22:24:58.190 INFO [stderr] 4 | use std::ptr::null;
Dec 19 22:24:58.190 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 22:24:58.191 INFO [stderr] 
Dec 19 22:24:58.191 INFO [stderr] warning: unused import: `seek`
Dec 19 22:24:58.191 INFO [stderr]  --> src/mining.rs:1:5
Dec 19 22:24:58.191 INFO [stderr]   |
Dec 19 22:24:58.191 INFO [stderr] 1 | use seek;
Dec 19 22:24:58.191 INFO [stderr]   |     ^^^^
Dec 19 22:24:58.191 INFO [stderr] 
Dec 19 22:24:58.219 INFO [stderr] warning: unused import: `openssl::sha`
Dec 19 22:24:58.219 INFO [stderr]  --> src/new_block.rs:2:5
Dec 19 22:24:58.219 INFO [stderr]   |
Dec 19 22:24:58.219 INFO [stderr] 2 | use openssl::sha;
Dec 19 22:24:58.219 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 19 22:24:58.219 INFO [stderr]   |
Dec 19 22:24:58.219 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:24:58.219 INFO [stderr] 
Dec 19 22:24:58.219 INFO [stderr] warning: unused import: `hex`
Dec 19 22:24:58.220 INFO [stderr]  --> src/new_block.rs:3:5
Dec 19 22:24:58.220 INFO [stderr]   |
Dec 19 22:24:58.220 INFO [stderr] 3 | use hex;
Dec 19 22:24:58.220 INFO [stderr]   |     ^^^
Dec 19 22:24:58.220 INFO [stderr] 
Dec 19 22:24:58.221 INFO [stderr] warning: unused import: `std::error::Error`
Dec 19 22:24:58.221 INFO [stderr]  --> src/validator.rs:1:5
Dec 19 22:24:58.221 INFO [stderr]   |
Dec 19 22:24:58.221 INFO [stderr] 1 | use std::error::Error;
Dec 19 22:24:58.221 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 22:24:58.222 INFO [stderr] 
Dec 19 22:24:58.222 INFO [stderr] warning: unused import: `std::ptr::null`
Dec 19 22:24:58.222 INFO [stderr]  --> src/validator.rs:4:5
Dec 19 22:24:58.222 INFO [stderr]   |
Dec 19 22:24:58.222 INFO [stderr] 4 | use std::ptr::null;
Dec 19 22:24:58.223 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 22:24:58.223 INFO [stderr] 
Dec 19 22:24:58.223 INFO [stderr] warning: unused import: `seek`
Dec 19 22:24:58.223 INFO [stderr]  --> src/mining.rs:1:5
Dec 19 22:24:58.223 INFO [stderr]   |
Dec 19 22:24:58.223 INFO [stderr] 1 | use seek;
Dec 19 22:24:58.224 INFO [stderr]   |     ^^^^
Dec 19 22:24:58.224 INFO [stderr] 
Dec 19 22:24:58.344 INFO [stderr] warning: unused variable: `nonce`
Dec 19 22:24:58.344 INFO [stderr]   --> src/new_block.rs:18:17
Dec 19 22:24:58.344 INFO [stderr]    |
Dec 19 22:24:58.344 INFO [stderr] 18 |         let mut nonce: i64 = 0;
Dec 19 22:24:58.344 INFO [stderr]    |                 ^^^^^ help: consider using `_nonce` instead
Dec 19 22:24:58.344 INFO [stderr]    |
Dec 19 22:24:58.344 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 22:24:58.344 INFO [stderr] 
Dec 19 22:24:58.345 INFO [stderr] warning: value assigned to `this_record` is never read
Dec 19 22:24:58.345 INFO [stderr]  --> src/validator.rs:9:13
Dec 19 22:24:58.345 INFO [stderr]   |
Dec 19 22:24:58.345 INFO [stderr] 9 |     let mut this_record = StringRecord::from(vec!["0", "0", "0", "0", "0"]);
Dec 19 22:24:58.345 INFO [stderr]   |             ^^^^^^^^^^^
Dec 19 22:24:58.345 INFO [stderr]   |
Dec 19 22:24:58.346 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 19 22:24:58.346 INFO [stderr]   = help: maybe it is overwritten before being read?
Dec 19 22:24:58.346 INFO [stderr] 
Dec 19 22:24:58.348 INFO [stderr] warning: unused variable: `nonce`
Dec 19 22:24:58.348 INFO [stderr]   --> src/new_block.rs:18:17
Dec 19 22:24:58.348 INFO [stderr]    |
Dec 19 22:24:58.349 INFO [stderr] 18 |         let mut nonce: i64 = 0;
Dec 19 22:24:58.349 INFO [stderr]    |                 ^^^^^ help: consider using `_nonce` instead
Dec 19 22:24:58.349 INFO [stderr]    |
Dec 19 22:24:58.349 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 22:24:58.349 INFO [stderr] 
Dec 19 22:24:58.349 INFO [stderr] warning: value assigned to `this_record` is never read
Dec 19 22:24:58.350 INFO [stderr]  --> src/validator.rs:9:13
Dec 19 22:24:58.350 INFO [stderr]   |
Dec 19 22:24:58.350 INFO [stderr] 9 |     let mut this_record = StringRecord::from(vec!["0", "0", "0", "0", "0"]);
Dec 19 22:24:58.350 INFO [stderr]   |             ^^^^^^^^^^^
Dec 19 22:24:58.351 INFO [stderr]   |
Dec 19 22:24:58.351 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 19 22:24:58.351 INFO [stderr]   = help: maybe it is overwritten before being read?
Dec 19 22:24:58.351 INFO [stderr] 
Dec 19 22:24:58.369 INFO [stderr] warning: variable does not need to be mutable
Dec 19 22:24:58.369 INFO [stderr]   --> src/new_block.rs:18:13
Dec 19 22:24:58.370 INFO [stderr]    |
Dec 19 22:24:58.370 INFO [stderr] 18 |         let mut nonce: i64 = 0;
Dec 19 22:24:58.370 INFO [stderr]    |             ----^^^^^
Dec 19 22:24:58.370 INFO [stderr]    |             |
Dec 19 22:24:58.370 INFO [stderr]    |             help: remove this `mut`
Dec 19 22:24:58.371 INFO [stderr]    |
Dec 19 22:24:58.371 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 22:24:58.371 INFO [stderr] 
Dec 19 22:24:58.380 INFO [stderr] warning: variable does not need to be mutable
Dec 19 22:24:58.380 INFO [stderr]   --> src/new_block.rs:18:13
Dec 19 22:24:58.381 INFO [stderr]    |
Dec 19 22:24:58.381 INFO [stderr] 18 |         let mut nonce: i64 = 0;
Dec 19 22:24:58.381 INFO [stderr]    |             ----^^^^^
Dec 19 22:24:58.381 INFO [stderr]    |             |
Dec 19 22:24:58.381 INFO [stderr]    |             help: remove this `mut`
Dec 19 22:24:58.382 INFO [stderr]    |
Dec 19 22:24:58.382 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 22:24:58.382 INFO [stderr] 
Dec 19 22:24:58.493 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.43s
Dec 19 22:24:59.500 INFO running `"docker" "inspect" "7d793f2c590d36b207afca8a5ede87c92ef155f39d426db42e71c5e09ed4c21f"`
Dec 19 22:24:59.882 INFO running `"docker" "rm" "-f" "7d793f2c590d36b207afca8a5ede87c92ef155f39d426db42e71c5e09ed4c21f"`
Dec 19 22:25:00.105 INFO [stdout] 7d793f2c590d36b207afca8a5ede87c92ef155f39d426db42e71c5e09ed4c21f