[INFO] cloning repository https://github.com/mister36/proof-of-work
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mister36/proof-of-work" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmister36%2Fproof-of-work", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmister36%2Fproof-of-work'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a42df606b92570bef08c364a1dd6e105de0b6602
[INFO] testing mister36/proof-of-work against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmister36%2Fproof-of-work" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mister36/proof-of-work on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mister36/proof-of-work
[INFO] finished tweaking git repo https://github.com/mister36/proof-of-work
[INFO] tweaked toml for git repo https://github.com/mister36/proof-of-work written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/mister36/proof-of-work already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cpufeatures v0.1.5
[INFO] [stderr]   Downloaded hex-literal v0.3.3
[INFO] [stderr]   Downloaded libc v0.2.100
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0184721f97a7508d9fc8ad465d2618f6857bd8cf4f335427e346ec522bd886e3
[INFO] running `Command { std: "docker" "start" "-a" "0184721f97a7508d9fc8ad465d2618f6857bd8cf4f335427e346ec522bd886e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0184721f97a7508d9fc8ad465d2618f6857bd8cf4f335427e346ec522bd886e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0184721f97a7508d9fc8ad465d2618f6857bd8cf4f335427e346ec522bd886e3", kill_on_drop: false }`
[INFO] [stdout] 0184721f97a7508d9fc8ad465d2618f6857bd8cf4f335427e346ec522bd886e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab478e8beb1ebbafc2408bc7569b7f9b4a19dae4ad3db3c7f07003d65cfdc848
[INFO] running `Command { std: "docker" "start" "-a" "ab478e8beb1ebbafc2408bc7569b7f9b4a19dae4ad3db3c7f07003d65cfdc848", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling cpufeatures v0.1.5
[INFO] [stderr]    Compiling hex-literal v0.3.3
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling sha2 v0.9.5
[INFO] [stderr]    Compiling proof-of-work v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `contents`
[INFO] [stdout]   --> src/chain/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     contents: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `prev_hash`
[INFO] [stdout]   --> src/chain/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     prev_hash: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timestamp`
[INFO] [stdout]   --> src/chain/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     timestamp: SystemTime
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sha256`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hex_literal::hex`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use hex_literal::hex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BigEndian`, `ReadBytesExt`
[INFO] [stdout]  --> src/main.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use byteorder::{BigEndian, ReadBytesExt};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]  --> src/main.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_2`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let block_2 = Block::new(Some(&chain.blocks[0]), "Next awesome string".to_string());
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut chain = Blockchain {blocks: vec![block_1]};
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.01s
[INFO] running `Command { std: "docker" "inspect" "ab478e8beb1ebbafc2408bc7569b7f9b4a19dae4ad3db3c7f07003d65cfdc848", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab478e8beb1ebbafc2408bc7569b7f9b4a19dae4ad3db3c7f07003d65cfdc848", kill_on_drop: false }`
[INFO] [stdout] ab478e8beb1ebbafc2408bc7569b7f9b4a19dae4ad3db3c7f07003d65cfdc848
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fb12950154ea977926430b3a7480d9d78a1b6fe959d9a33123d80e0537dc689
[INFO] running `Command { std: "docker" "start" "-a" "2fb12950154ea977926430b3a7480d9d78a1b6fe959d9a33123d80e0537dc689", kill_on_drop: false }`
[INFO] [stdout] warning: field is never read: `contents`
[INFO] [stdout]   --> src/chain/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     contents: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `prev_hash`
[INFO] [stdout]   --> src/chain/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     prev_hash: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timestamp`
[INFO] [stdout]   --> src/chain/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     timestamp: SystemTime
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling proof-of-work v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sha256`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hex_literal::hex`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use hex_literal::hex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BigEndian`, `ReadBytesExt`
[INFO] [stdout]  --> src/main.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use byteorder::{BigEndian, ReadBytesExt};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]  --> src/main.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_2`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let block_2 = Block::new(Some(&chain.blocks[0]), "Next awesome string".to_string());
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut chain = Blockchain {blocks: vec![block_1]};
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `contents`
[INFO] [stdout]   --> src/chain/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     contents: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `prev_hash`
[INFO] [stdout]   --> src/chain/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     prev_hash: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timestamp`
[INFO] [stdout]   --> src/chain/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     timestamp: SystemTime
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "2fb12950154ea977926430b3a7480d9d78a1b6fe959d9a33123d80e0537dc689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fb12950154ea977926430b3a7480d9d78a1b6fe959d9a33123d80e0537dc689", kill_on_drop: false }`
[INFO] [stdout] 2fb12950154ea977926430b3a7480d9d78a1b6fe959d9a33123d80e0537dc689
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5513d20eacfb57d005012f442a57840d849f6248a7028c67bc2990bac69ac218
[INFO] running `Command { std: "docker" "start" "-a" "5513d20eacfb57d005012f442a57840d849f6248a7028c67bc2990bac69ac218", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `contents`
[INFO] [stderr]   --> src/chain/lib.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     contents: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `prev_hash`
[INFO] [stderr]   --> src/chain/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     prev_hash: Vec<u8>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `timestamp`
[INFO] [stderr]   --> src/chain/lib.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     timestamp: SystemTime
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `proof-of-work` (lib) generated 3 warnings
[INFO] [stderr] warning: `proof-of-work` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr] warning: unused import: `std::io::Cursor`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::Cursor;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sha256`
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use sha2::{Sha256, Digest};
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hex_literal::hex`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use hex_literal::hex;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigEndian`, `ReadBytesExt`
[INFO] [stderr]  --> src/main.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use byteorder::{BigEndian, ReadBytesExt};
[INFO] [stderr]   |                 ^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Digest`
[INFO] [stderr]  --> src/main.rs:2:20
[INFO] [stderr]   |
[INFO] [stderr] 2 | use sha2::{Sha256, Digest};
[INFO] [stderr]   |                    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `block_2`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let block_2 = Block::new(Some(&chain.blocks[0]), "Next awesome string".to_string());
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut chain = Blockchain {blocks: vec![block_1]};
[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: `proof-of-work` (bin "bin" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chain-eeabec61b75d65b4)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bin-c7219d0a7edc11e8)
[INFO] [stderr]    Doc-tests chain
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5513d20eacfb57d005012f442a57840d849f6248a7028c67bc2990bac69ac218", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5513d20eacfb57d005012f442a57840d849f6248a7028c67bc2990bac69ac218", kill_on_drop: false }`
[INFO] [stdout] 5513d20eacfb57d005012f442a57840d849f6248a7028c67bc2990bac69ac218