[INFO] cloning repository https://github.com/chb0github/rusty-brown
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chb0github/rusty-brown" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchb0github%2Frusty-brown", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchb0github%2Frusty-brown'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d45205be048412291660b8b6e77d7efd289aa11
[INFO] testing chb0github/rusty-brown against master#404c8471aba60c2d837fa728e7c729a0f52d5830 for pr-87041-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchb0github%2Frusty-brown" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chb0github/rusty-brown on toolchain 404c8471aba60c2d837fa728e7c729a0f52d5830
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chb0github/rusty-brown
[INFO] finished tweaking git repo https://github.com/chb0github/rusty-brown
[INFO] tweaked toml for git repo https://github.com/chb0github/rusty-brown written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/chb0github/rusty-brown already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e98fe3f518f2117c658ca4abc0efb67ee8248ba9d756e113b554036e3b29c7e5
[INFO] running `Command { std: "docker" "start" "-a" "e98fe3f518f2117c658ca4abc0efb67ee8248ba9d756e113b554036e3b29c7e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e98fe3f518f2117c658ca4abc0efb67ee8248ba9d756e113b554036e3b29c7e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e98fe3f518f2117c658ca4abc0efb67ee8248ba9d756e113b554036e3b29c7e5", kill_on_drop: false }`
[INFO] [stdout] e98fe3f518f2117c658ca4abc0efb67ee8248ba9d756e113b554036e3b29c7e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0a571bf74304d154f24e0911a083d4f18958e719581dda3b932d931e3d7106a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d0a571bf74304d154f24e0911a083d4f18958e719581dda3b932d931e3d7106a", kill_on_drop: false }`
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[INFO] [stderr]    Compiling prost v0.8.0
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[INFO] [stderr]    Compiling futures-executor v0.3.18
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[INFO] [stderr]    Compiling trust-dns-proto v0.20.3
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[INFO] [stderr]    Compiling js-sys v0.3.55
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[INFO] [stderr]    Compiling libp2p-identify v0.30.0
[INFO] [stderr]    Compiling trust-dns-resolver v0.20.3
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling ed25519-dalek v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling async-std-resolver v0.20.3
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.28
[INFO] [stderr]    Compiling multihash-derive v0.7.2
[INFO] [stderr]    Compiling multihash v0.14.0
[INFO] [stderr]    Compiling multiaddr v0.13.0
[INFO] [stderr]    Compiling libp2p-swarm v0.30.0
[INFO] [stderr]    Compiling libp2p-tcp v0.29.0
[INFO] [stderr]    Compiling libp2p-yamux v0.33.0
[INFO] [stderr]    Compiling libp2p-dns v0.29.0
[INFO] [stderr]    Compiling libp2p-uds v0.29.0
[INFO] [stderr]    Compiling libp2p-websocket v0.30.0
[INFO] [stderr]    Compiling libp2p-deflate v0.29.0
[INFO] [stderr]    Compiling libp2p-wasm-ext v0.29.0
[INFO] [stderr]    Compiling libp2p-mplex v0.29.0
[INFO] [stderr]    Compiling libp2p-request-response v0.12.0
[INFO] [stderr]    Compiling libp2p-ping v0.30.0
[INFO] [stderr]    Compiling libp2p-mdns v0.31.0
[INFO] [stderr]    Compiling libp2p v0.39.1
[INFO] [stderr]    Compiling pyrsia-blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `nonce`
[INFO] [stdout]    --> src/block_chain.rs:125:17
[INFO] [stdout]     |
[INFO] [stdout] 125 |         .find(|(nonce,hash,binary_hash)| binary_hash.starts_with(DIFFICULTY_PREFIX))
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_nonce`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hash`
[INFO] [stdout]    --> src/block_chain.rs:125:23
[INFO] [stdout]     |
[INFO] [stdout] 125 |         .find(|(nonce,hash,binary_hash)| binary_hash.starts_with(DIFFICULTY_PREFIX))
[INFO] [stdout]     |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bin`
[INFO] [stdout]    --> src/block_chain.rs:126:28
[INFO] [stdout]     |
[INFO] [stdout] 126 |         .map(|(nonce,hash, bin)| (nonce, hex::encode(hash))).expect("results")
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_bin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_chain_valid`
[INFO] [stdout]   --> src/block_chain.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn is_chain_valid(&self, chain: &[Block]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/block_chain.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | /         serde_json::to_string_pretty(&self.blocks).map(|pretty_json|
[INFO] [stdout] 13 | |             println!("{}", pretty_json)
[INFO] [stdout] 14 | |         );
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 15s
[INFO] running `Command { std: "docker" "inspect" "d0a571bf74304d154f24e0911a083d4f18958e719581dda3b932d931e3d7106a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0a571bf74304d154f24e0911a083d4f18958e719581dda3b932d931e3d7106a", kill_on_drop: false }`
[INFO] [stdout] d0a571bf74304d154f24e0911a083d4f18958e719581dda3b932d931e3d7106a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c6b2960539b25c51dc1cbb3f594b1eef298cb5e5454ab56bca547413f2719464
[INFO] running `Command { std: "docker" "start" "-a" "c6b2960539b25c51dc1cbb3f594b1eef298cb5e5454ab56bca547413f2719464", kill_on_drop: false }`
[INFO] [stderr]    Compiling pyrsia-blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `nonce`
[INFO] [stdout]    --> src/block_chain.rs:125:17
[INFO] [stdout]     |
[INFO] [stdout] 125 |         .find(|(nonce,hash,binary_hash)| binary_hash.starts_with(DIFFICULTY_PREFIX))
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_nonce`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hash`
[INFO] [stdout]    --> src/block_chain.rs:125:23
[INFO] [stdout]     |
[INFO] [stdout] 125 |         .find(|(nonce,hash,binary_hash)| binary_hash.starts_with(DIFFICULTY_PREFIX))
[INFO] [stdout]     |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bin`
[INFO] [stdout]    --> src/block_chain.rs:126:28
[INFO] [stdout]     |
[INFO] [stdout] 126 |         .map(|(nonce,hash, bin)| (nonce, hex::encode(hash))).expect("results")
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_bin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_chain_valid`
[INFO] [stdout]   --> src/block_chain.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn is_chain_valid(&self, chain: &[Block]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/block_chain.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | /         serde_json::to_string_pretty(&self.blocks).map(|pretty_json|
[INFO] [stdout] 13 | |             println!("{}", pretty_json)
[INFO] [stdout] 14 | |         );
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "c6b2960539b25c51dc1cbb3f594b1eef298cb5e5454ab56bca547413f2719464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6b2960539b25c51dc1cbb3f594b1eef298cb5e5454ab56bca547413f2719464", kill_on_drop: false }`
[INFO] [stdout] c6b2960539b25c51dc1cbb3f594b1eef298cb5e5454ab56bca547413f2719464
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4723508451f8475df656f2d6091d6958c38bcdb5dd27c69cdbc3e6083b882de6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4723508451f8475df656f2d6091d6958c38bcdb5dd27c69cdbc3e6083b882de6", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `nonce`
[INFO] [stderr]    --> src/block_chain.rs:125:17
[INFO] [stderr]     |
[INFO] [stderr] 125 |         .find(|(nonce,hash,binary_hash)| binary_hash.starts_with(DIFFICULTY_PREFIX))
[INFO] [stderr]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_nonce`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hash`
[INFO] [stderr]    --> src/block_chain.rs:125:23
[INFO] [stderr]     |
[INFO] [stderr] 125 |         .find(|(nonce,hash,binary_hash)| binary_hash.starts_with(DIFFICULTY_PREFIX))
[INFO] [stderr]     |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_hash`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bin`
[INFO] [stderr]    --> src/block_chain.rs:126:28
[INFO] [stderr]     |
[INFO] [stderr] 126 |         .map(|(nonce,hash, bin)| (nonce, hex::encode(hash))).expect("results")
[INFO] [stderr]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_bin`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_chain_valid`
[INFO] [stderr]   --> src/block_chain.rs:83:8
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn is_chain_valid(&self, chain: &[Block]) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/block_chain.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 | /         serde_json::to_string_pretty(&self.blocks).map(|pretty_json|
[INFO] [stderr] 13 | |             println!("{}", pretty_json)
[INFO] [stderr] 14 | |         );
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `pyrsia-blockchain` (bin "pyrsia-blockchain" test) generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pyrsia_blockchain-b8f1cd1da6c9ca3e)
[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" "4723508451f8475df656f2d6091d6958c38bcdb5dd27c69cdbc3e6083b882de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4723508451f8475df656f2d6091d6958c38bcdb5dd27c69cdbc3e6083b882de6", kill_on_drop: false }`
[INFO] [stdout] 4723508451f8475df656f2d6091d6958c38bcdb5dd27c69cdbc3e6083b882de6