[INFO] updating cached repository PhdTrollSlayer/CrabChain
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PhdTrollSlayer/CrabChain
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PhdTrollSlayer/CrabChain" "work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/PhdTrollSlayer/CrabChain"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/PhdTrollSlayer/CrabChain'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PhdTrollSlayer/CrabChain" "work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/PhdTrollSlayer/CrabChain"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/PhdTrollSlayer/CrabChain'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7cf9ff4289f5d2f0479e5fc0f384ca8d55f883f2
[INFO] sha for GitHub repo PhdTrollSlayer/CrabChain: 7cf9ff4289f5d2f0479e5fc0f384ca8d55f883f2
[INFO] validating manifest of PhdTrollSlayer/CrabChain on toolchain master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of PhdTrollSlayer/CrabChain on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing PhdTrollSlayer/CrabChain
[INFO] finished frobbing PhdTrollSlayer/CrabChain
[INFO] frobbed toml for PhdTrollSlayer/CrabChain written to work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/PhdTrollSlayer/CrabChain/Cargo.toml
[INFO] started frobbing PhdTrollSlayer/CrabChain
[INFO] finished frobbing PhdTrollSlayer/CrabChain
[INFO] frobbed toml for PhdTrollSlayer/CrabChain written to work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/PhdTrollSlayer/CrabChain/Cargo.toml
[INFO] crate PhdTrollSlayer/CrabChain has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking PhdTrollSlayer/CrabChain against master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039 for pr-57745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57745/worker-2/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/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" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8b0df6e901aa612f4875b23466b11a89fc0202c7f732a86e5d176cf342587fd3
[INFO] running `"docker" "start" "-a" "8b0df6e901aa612f4875b23466b11a89fc0202c7f732a86e5d176cf342587fd3"`
[INFO] [stderr]    Compiling openssl v0.10.6
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking csv-core v0.1.4
[INFO] [stderr]     Checking csv v1.0.0
[INFO] [stderr]     Checking blockchain1 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `seek`
[INFO] [stderr]  --> src/mining.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use seek;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `seek`
[INFO] [stderr]  --> src/mining.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use seek;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_last_block_hash`
[INFO] [stderr]  --> src/seek.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn find_last_block_hash() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_last_block_id`
[INFO] [stderr]   --> src/seek.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn find_last_block_id() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `last_block`
[INFO] [stderr]  --> src/mining.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn last_block(prev_hash: String) -> (String, String) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_last_block_hash`
[INFO] [stderr]  --> src/seek.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn find_last_block_hash() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_last_block_id`
[INFO] [stderr]   --> src/seek.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn find_last_block_id() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `last_block`
[INFO] [stderr]  --> src/mining.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn last_block(prev_hash: String) -> (String, String) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `openssl::sha`
[INFO] [stderr]  --> src/new_block.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use openssl::sha;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hex`
[INFO] [stderr]  --> src/new_block.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use hex;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/validator.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ptr::null`
[INFO] [stderr]  --> src/validator.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ptr::null;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `seek`
[INFO] [stderr]  --> src/mining.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use seek;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nonce`
[INFO] [stderr]   --> src/new_block.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut nonce: i64 = 0;
[INFO] [stderr]    |                 ^^^^^ help: consider using `_nonce` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `this_record` is never read
[INFO] [stderr]  --> src/validator.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut this_record = StringRecord::from(vec!["0", "0", "0", "0", "0"]);
[INFO] [stderr]   |             ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/new_block.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut nonce: i64 = 0;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `openssl::sha`
[INFO] [stderr]  --> src/new_block.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use openssl::sha;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hex`
[INFO] [stderr]  --> src/new_block.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use hex;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/validator.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ptr::null`
[INFO] [stderr]  --> src/validator.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ptr::null;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `seek`
[INFO] [stderr]  --> src/mining.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use seek;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nonce`
[INFO] [stderr]   --> src/new_block.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut nonce: i64 = 0;
[INFO] [stderr]    |                 ^^^^^ help: consider using `_nonce` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `this_record` is never read
[INFO] [stderr]  --> src/validator.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut this_record = StringRecord::from(vec!["0", "0", "0", "0", "0"]);
[INFO] [stderr]   |             ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/new_block.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut nonce: i64 = 0;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.65s
[INFO] running `"docker" "inspect" "8b0df6e901aa612f4875b23466b11a89fc0202c7f732a86e5d176cf342587fd3"`
[INFO] running `"docker" "rm" "-f" "8b0df6e901aa612f4875b23466b11a89fc0202c7f732a86e5d176cf342587fd3"`
[INFO] [stdout] 8b0df6e901aa612f4875b23466b11a89fc0202c7f732a86e5d176cf342587fd3