[INFO] cloning repository https://github.com/codingpog/Simple_Blockchain_With_Rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codingpog/Simple_Blockchain_With_Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodingpog%2FSimple_Blockchain_With_Rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodingpog%2FSimple_Blockchain_With_Rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 77b88bf64acd2199f5a47cef5b5139e76560ed71 [INFO] checking codingpog/Simple_Blockchain_With_Rust/77b88bf64acd2199f5a47cef5b5139e76560ed71 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodingpog%2FSimple_Blockchain_With_Rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/codingpog/Simple_Blockchain_With_Rust on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/codingpog/Simple_Blockchain_With_Rust [INFO] finished tweaking git repo https://github.com/codingpog/Simple_Blockchain_With_Rust [INFO] tweaked toml for git repo https://github.com/codingpog/Simple_Blockchain_With_Rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/codingpog/Simple_Blockchain_With_Rust 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded spmc v0.3.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e1f093758a809e21d239457fb8c962aca609955290ac71aedff50566d6099dfb [INFO] running `Command { std: "docker" "start" "-a" "e1f093758a809e21d239457fb8c962aca609955290ac71aedff50566d6099dfb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e1f093758a809e21d239457fb8c962aca609955290ac71aedff50566d6099dfb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e1f093758a809e21d239457fb8c962aca609955290ac71aedff50566d6099dfb", kill_on_drop: false }` [INFO] [stdout] e1f093758a809e21d239457fb8c962aca609955290ac71aedff50566d6099dfb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 57a488524fcf33a7c0ac2c498af017ce6fcd9ff0b0ebe3b0600efebeb421a35b [INFO] running `Command { std: "docker" "start" "-a" "57a488524fcf33a7c0ac2c498af017ce6fcd9ff0b0ebe3b0600efebeb421a35b", kill_on_drop: false }` [INFO] [stderr] Checking cpufeatures v0.2.9 [INFO] [stderr] Checking spmc v0.3.0 [INFO] [stderr] Checking sha2 v0.10.7 [INFO] [stderr] Checking a3 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Mutex` [INFO] [stdout] --> src/queue.rs:3:22 [INFO] [stdout] | [INFO] [stdout] 3 | use std::sync::{Arc, Mutex}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Mutex` [INFO] [stdout] --> src/queue.rs:3:22 [INFO] [stdout] | [INFO] [stdout] 3 | use std::sync::{Arc, Mutex}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send_output_shared` [INFO] [stdout] --> src/queue.rs:55:17 [INFO] [stdout] | [INFO] [stdout] 55 | let send_output_shared = Arc::new(Box::new(send_output.clone())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_send_output_shared` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/queue.rs:65:21 [INFO] [stdout] | [INFO] [stdout] 65 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/block.rs:135:13 [INFO] [stdout] | [INFO] [stdout] 135 | q.enqueue(MiningTask::new(block_clone, start_chunk, end_chunk)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 135 | let _ = q.enqueue(MiningTask::new(block_clone, start_chunk, end_chunk)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/block.rs:147:13 [INFO] [stdout] | [INFO] [stdout] 147 | q.enqueue(MiningTask::new(block_clone, start_chunk, end_chunk)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 147 | let _ = q.enqueue(MiningTask::new(block_clone, start_chunk, end_chunk)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send_output_shared` [INFO] [stdout] --> src/queue.rs:55:17 [INFO] [stdout] | [INFO] [stdout] 55 | let send_output_shared = Arc::new(Box::new(send_output.clone())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_send_output_shared` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/queue.rs:65:21 [INFO] [stdout] | [INFO] [stdout] 65 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `VALID_HASH_STRING` is never used [INFO] [stdout] --> src/block_tests.rs:35:15 [INFO] [stdout] | [INFO] [stdout] 35 | const VALID_HASH_STRING: & str = "4a1c722d8021346fa2f440d7f0bbaa585e632f68fd20fed812fc944613b92500:2:7:this is not interesting:40"; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `VALID_HASH` is never used [INFO] [stdout] --> src/block_tests.rs:36:15 [INFO] [stdout] | [INFO] [stdout] 36 | const VALID_HASH : &str = "ba2f9bf0f9ec629db726f1a5fe7312eb76270459e3f5bfdc4e213df9e47cd380"; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `VALID_HASH_STRING` is never used [INFO] [stdout] --> src/block_tests.rs:50:15 [INFO] [stdout] | [INFO] [stdout] 50 | ... const VALID_HASH_STRING: & str = "a42b7e319ee2dee845f1eb842c31dac60a94c04432319638ec1b9f989d000000:2:20:this is not interesting:101... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `VALID_HASH` is never used [INFO] [stdout] --> src/block_tests.rs:51:15 [INFO] [stdout] | [INFO] [stdout] 51 | const VALID_HASH : &str = "6c589f7a3d2df217fdb39cd969006bc8651a0a3251ffb50470cbc9a0e4d00000"; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/block.rs:135:13 [INFO] [stdout] | [INFO] [stdout] 135 | q.enqueue(MiningTask::new(block_clone, start_chunk, end_chunk)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 135 | let _ = q.enqueue(MiningTask::new(block_clone, start_chunk, end_chunk)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/block.rs:147:13 [INFO] [stdout] | [INFO] [stdout] 147 | q.enqueue(MiningTask::new(block_clone, start_chunk, end_chunk)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 147 | let _ = q.enqueue(MiningTask::new(block_clone, start_chunk, end_chunk)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `a3::block::Block` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use a3::block::Block; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Mutex` [INFO] [stdout] --> src/queue.rs:3:22 [INFO] [stdout] | [INFO] [stdout] 3 | use std::sync::{Arc, Mutex}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `a3::block::Block` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use a3::block::Block; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Mutex` [INFO] [stdout] --> src/queue.rs:3:22 [INFO] [stdout] | [INFO] [stdout] 3 | use std::sync::{Arc, Mutex}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send_output_shared` [INFO] [stdout] --> src/queue.rs:55:17 [INFO] [stdout] | [INFO] [stdout] 55 | let send_output_shared = Arc::new(Box::new(send_output.clone())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_send_output_shared` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/queue.rs:65:21 [INFO] [stdout] | [INFO] [stdout] 65 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `run` is never used [INFO] [stdout] --> src/queue.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub trait Task { [INFO] [stdout] | ---- method in this trait [INFO] [stdout] 6 | type Output: Send; [INFO] [stdout] 7 | fn run(&self) -> Option; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `recv_output` is never read [INFO] [stdout] --> src/queue.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct WorkQueue { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 14 | recv_output: mpsc::Receiver, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple associated items are never used [INFO] [stdout] --> src/queue.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 18 | impl WorkQueue { [INFO] [stdout] | --------------------------------------------------------- associated items in this implementation [INFO] [stdout] 19 | pub fn new(n_workers: usize) -> WorkQueue { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 51 | fn run(recv_tasks: spmc::Receiver, send_output: mpsc::Sender) { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 83 | pub fn enqueue(&mut self, t: TaskType) -> Result<(), spmc::SendError> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 93 | pub fn iter(&mut self) -> mpsc::Iter { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 96 | pub fn recv(&mut self) -> TaskType::Output { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 101 | pub fn try_recv(&mut self) -> Result { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 104 | pub fn recv_timeout( [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `send_output_shared` [INFO] [stdout] --> src/queue.rs:55:17 [INFO] [stdout] | [INFO] [stdout] 55 | let send_output_shared = Arc::new(Box::new(send_output.clone())); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_send_output_shared` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/queue.rs:65:21 [INFO] [stdout] | [INFO] [stdout] 65 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `run` is never used [INFO] [stdout] --> src/queue.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub trait Task { [INFO] [stdout] | ---- method in this trait [INFO] [stdout] 6 | type Output: Send; [INFO] [stdout] 7 | fn run(&self) -> Option; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `recv_output` is never read [INFO] [stdout] --> src/queue.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct WorkQueue { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 14 | recv_output: mpsc::Receiver, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple associated items are never used [INFO] [stdout] --> src/queue.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 18 | impl WorkQueue { [INFO] [stdout] | --------------------------------------------------------- associated items in this implementation [INFO] [stdout] 19 | pub fn new(n_workers: usize) -> WorkQueue { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 51 | fn run(recv_tasks: spmc::Receiver, send_output: mpsc::Sender) { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 83 | pub fn enqueue(&mut self, t: TaskType) -> Result<(), spmc::SendError> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 93 | pub fn iter(&mut self) -> mpsc::Iter { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 96 | pub fn recv(&mut self) -> TaskType::Output { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 101 | pub fn try_recv(&mut self) -> Result { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 104 | pub fn recv_timeout( [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.60s [INFO] running `Command { std: "docker" "inspect" "57a488524fcf33a7c0ac2c498af017ce6fcd9ff0b0ebe3b0600efebeb421a35b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "57a488524fcf33a7c0ac2c498af017ce6fcd9ff0b0ebe3b0600efebeb421a35b", kill_on_drop: false }` [INFO] [stdout] 57a488524fcf33a7c0ac2c498af017ce6fcd9ff0b0ebe3b0600efebeb421a35b