[INFO] cloning repository https://github.com/sadiqsaidu/blkchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sadiqsaidu/blkchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsadiqsaidu%2Fblkchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsadiqsaidu%2Fblkchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9418d01243f60117d66bb13d1377f6eed6a75e51
[INFO] checking sadiqsaidu/blkchain against master#d2eadb7a94ef8c9deb5137695df33cd1fc5aee92 for pr-137268
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsadiqsaidu%2Fblkchain" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sadiqsaidu/blkchain on toolchain d2eadb7a94ef8c9deb5137695df33cd1fc5aee92
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d2eadb7a94ef8c9deb5137695df33cd1fc5aee92" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sadiqsaidu/blkchain
[INFO] finished tweaking git repo https://github.com/sadiqsaidu/blkchain
[INFO] tweaked toml for git repo https://github.com/sadiqsaidu/blkchain written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sadiqsaidu/blkchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d2eadb7a94ef8c9deb5137695df33cd1fc5aee92" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+d2eadb7a94ef8c9deb5137695df33cd1fc5aee92" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 400c9a5a2cadfad08fd4304eedf72fe5eccbf6f1c21f418d9e136a1076dbe867
[INFO] running `Command { std: "docker" "start" "-a" "400c9a5a2cadfad08fd4304eedf72fe5eccbf6f1c21f418d9e136a1076dbe867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "400c9a5a2cadfad08fd4304eedf72fe5eccbf6f1c21f418d9e136a1076dbe867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "400c9a5a2cadfad08fd4304eedf72fe5eccbf6f1c21f418d9e136a1076dbe867", kill_on_drop: false }`
[INFO] [stdout] 400c9a5a2cadfad08fd4304eedf72fe5eccbf6f1c21f418d9e136a1076dbe867
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+d2eadb7a94ef8c9deb5137695df33cd1fc5aee92" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 310701e91fa1c38532251861f56cce61ea106dd288bf147607a11d064bd1fe6f
[INFO] running `Command { std: "docker" "start" "-a" "310701e91fa1c38532251861f56cce61ea106dd288bf147607a11d064bd1fe6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]     Checking blkchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `block::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use block::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `block::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use block::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]  --> src/block.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Block {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_hash` is never used
[INFO] [stdout]   --> src/block.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 13 |     fn set_hash(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_block` is never used
[INFO] [stdout]   --> src/block.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn new_block(data: String, prev_block_hash: Vec<u8>) -> Block {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_genesis_block` is never used
[INFO] [stdout]   --> src/block.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn new_genesis_block() -> Block {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]  --> src/block.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Block {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_hash` is never used
[INFO] [stdout]   --> src/block.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 13 |     fn set_hash(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_block` is never used
[INFO] [stdout]   --> src/block.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn new_block(data: String, prev_block_hash: Vec<u8>) -> Block {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_genesis_block` is never used
[INFO] [stdout]   --> src/block.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn new_genesis_block() -> Block {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.56s
[INFO] running `Command { std: "docker" "inspect" "310701e91fa1c38532251861f56cce61ea106dd288bf147607a11d064bd1fe6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "310701e91fa1c38532251861f56cce61ea106dd288bf147607a11d064bd1fe6f", kill_on_drop: false }`
[INFO] [stdout] 310701e91fa1c38532251861f56cce61ea106dd288bf147607a11d064bd1fe6f