[INFO] cloning repository https://github.com/Sahan-g/PoW-Blockchain_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sahan-g/PoW-Blockchain_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSahan-g%2FPoW-Blockchain_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSahan-g%2FPoW-Blockchain_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 520588ba6b43829bcd1ee3a7e2e658232ed7fb17
[INFO] checking Sahan-g/PoW-Blockchain_rust/520588ba6b43829bcd1ee3a7e2e658232ed7fb17 against master#8365fcb2b840c95eeb0bc377af8bd498fad22245 for pr-145604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSahan-g%2FPoW-Blockchain_rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Sahan-g/PoW-Blockchain_rust
[INFO] finished tweaking git repo https://github.com/Sahan-g/PoW-Blockchain_rust
[INFO] tweaked toml for git repo https://github.com/Sahan-g/PoW-Blockchain_rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Sahan-g/PoW-Blockchain_rust on toolchain 8365fcb2b840c95eeb0bc377af8bd498fad22245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8365fcb2b840c95eeb0bc377af8bd498fad22245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Sahan-g/PoW-Blockchain_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" "+8365fcb2b840c95eeb0bc377af8bd498fad22245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8365fcb2b840c95eeb0bc377af8bd498fad22245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c7243f4ce129d586953d4af1798f1ddb41d962b9d601a0a617c64f150fa89eb
[INFO] running `Command { std: "docker" "start" "-a" "3c7243f4ce129d586953d4af1798f1ddb41d962b9d601a0a617c64f150fa89eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c7243f4ce129d586953d4af1798f1ddb41d962b9d601a0a617c64f150fa89eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c7243f4ce129d586953d4af1798f1ddb41d962b9d601a0a617c64f150fa89eb", kill_on_drop: false }`
[INFO] [stdout] 3c7243f4ce129d586953d4af1798f1ddb41d962b9d601a0a617c64f150fa89eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8365fcb2b840c95eeb0bc377af8bd498fad22245" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2936b566d170c1e5d0013ac2ad86351748d31fece70742c6d5900ceae5b6947e
[INFO] running `Command { std: "docker" "start" "-a" "2936b566d170c1e5d0013ac2ad86351748d31fece70742c6d5900ceae5b6947e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
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[INFO] [stderr]    Compiling libc v0.2.172
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[INFO] [stdout] warning: unused imports: `Read` and `Write`
[INFO] [stdout]  --> src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `Write`
[INFO] [stdout]  --> src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]    --> src/main.rs:292:29
[INFO] [stdout]     |
[INFO] [stdout] 292 |                         for peer in peers {
[INFO] [stdout]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]    --> src/main.rs:292:29
[INFO] [stdout]     |
[INFO] [stdout] 292 |                         for peer in peers {
[INFO] [stdout]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `init_sender` is never read
[INFO] [stdout]   --> src/blockchain.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct AppBehaviour {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub init_sender: mpsc::UnboundedSender<bool>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/blockchain.rs:53:14
[INFO] [stdout]    |
[INFO] [stdout] 53 |     Floodsub(FloodsubEvent),
[INFO] [stdout]    |     -------- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 53 -     Floodsub(FloodsubEvent),
[INFO] [stdout] 53 +     Floodsub(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/blockchain.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |     Mdns(MdnsEvent),
[INFO] [stdout]    |     ---- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 54 -     Mdns(MdnsEvent),
[INFO] [stdout] 54 +     Mdns(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ChainResponse`, `Input`, and `Init` are never constructed
[INFO] [stdout]   --> src/blockchain.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub enum Event {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 52 |     ChainResponse(ChainResponse),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     Input(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 56 |     Init,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `init_sender` is never read
[INFO] [stdout]   --> src/blockchain.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct AppBehaviour {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub init_sender: mpsc::UnboundedSender<bool>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/blockchain.rs:53:14
[INFO] [stdout]    |
[INFO] [stdout] 53 |     Floodsub(FloodsubEvent),
[INFO] [stdout]    |     -------- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 53 -     Floodsub(FloodsubEvent),
[INFO] [stdout] 53 +     Floodsub(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/blockchain.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |     Mdns(MdnsEvent),
[INFO] [stdout]    |     ---- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 54 -     Mdns(MdnsEvent),
[INFO] [stdout] 54 +     Mdns(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ChainResponse`, `Input`, and `Init` are never constructed
[INFO] [stdout]   --> src/blockchain.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub enum Event {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 52 |     ChainResponse(ChainResponse),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     Input(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 56 |     Init,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 54.30s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: snow v0.8.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "2936b566d170c1e5d0013ac2ad86351748d31fece70742c6d5900ceae5b6947e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2936b566d170c1e5d0013ac2ad86351748d31fece70742c6d5900ceae5b6947e", kill_on_drop: false }`
[INFO] [stdout] 2936b566d170c1e5d0013ac2ad86351748d31fece70742c6d5900ceae5b6947e