[INFO] cloning repository https://github.com/lempiy/blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lempiy/blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flempiy%2Fblockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flempiy%2Fblockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bf752c8d244824e9a8bb78e23846b00a50e2610
[INFO] checking lempiy/blockchain against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flempiy%2Fblockchain" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lempiy/blockchain on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lempiy/blockchain
[INFO] finished tweaking git repo https://github.com/lempiy/blockchain
[INFO] tweaked toml for git repo https://github.com/lempiy/blockchain written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/lempiy/blockchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57cc82dfb5b6b511a1d4fb75e952fbe476263b6bc0e001c179f30d779f882d9d
[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" "57cc82dfb5b6b511a1d4fb75e952fbe476263b6bc0e001c179f30d779f882d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57cc82dfb5b6b511a1d4fb75e952fbe476263b6bc0e001c179f30d779f882d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57cc82dfb5b6b511a1d4fb75e952fbe476263b6bc0e001c179f30d779f882d9d", kill_on_drop: false }`
[INFO] [stdout] 57cc82dfb5b6b511a1d4fb75e952fbe476263b6bc0e001c179f30d779f882d9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4e1dc26b6ffd7e69871431c18e5706a3c1a3701c2909d4cfd8dd821cb7bf08c
[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" "c4e1dc26b6ffd7e69871431c18e5706a3c1a3701c2909d4cfd8dd821cb7bf08c", kill_on_drop: false }`
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] [stderr] Checking byte-tools v0.2.0
[INFO] [stderr] Checking arrayref v0.3.4
[INFO] [stderr] Checking serde v1.0.38
[INFO] [stderr] Checking num-traits v0.2.2
[INFO] [stderr] Checking libc v0.2.40
[INFO] [stderr] Compiling proc-macro2 v0.3.6
[INFO] [stderr] Checking generic-array v0.9.0
[INFO] [stderr] Checking block-buffer v0.3.3
[INFO] [stderr] Checking digest v0.7.2
[INFO] [stderr] Checking sha2 v0.7.0
[INFO] [stderr] Checking time v0.1.39
[INFO] [stderr] Compiling quote v0.5.1
[INFO] [stderr] Compiling syn v0.13.1
[INFO] [stderr] Compiling serde_derive_internals v0.23.1
[INFO] [stderr] Compiling serde_derive v1.0.38
[INFO] [stderr] Checking serde_json v1.0.14
[INFO] [stderr] Checking blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:16:5
[INFO] [stdout] |
[INFO] [stdout] 16 | io::stdout().flush();
[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: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:17:5
[INFO] [stdout] |
[INFO] [stdout] 17 | io::stdin().read_line(&mut miner_addr);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:20:5
[INFO] [stdout] |
[INFO] [stdout] 20 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:21:5
[INFO] [stdout] |
[INFO] [stdout] 21 | io::stdin().read_line(&mut difficulty);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:36:9
[INFO] [stdout] |
[INFO] [stdout] 36 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:38:9
[INFO] [stdout] |
[INFO] [stdout] 38 | io::stdin().read_line(&mut choice);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:54:17
[INFO] [stdout] |
[INFO] [stdout] 54 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:55:17
[INFO] [stdout] |
[INFO] [stdout] 55 | io::stdin().read_line(&mut sender);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:58:17
[INFO] [stdout] |
[INFO] [stdout] 58 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:59:17
[INFO] [stdout] |
[INFO] [stdout] 59 | io::stdin().read_line(&mut reciever);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:62:17
[INFO] [stdout] |
[INFO] [stdout] 62 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:63:17
[INFO] [stdout] |
[INFO] [stdout] 63 | io::stdin().read_line(&mut amount);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:85:17
[INFO] [stdout] |
[INFO] [stdout] 85 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:86:17
[INFO] [stdout] |
[INFO] [stdout] 86 | io::stdin().read_line(&mut new_diff);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:96:17
[INFO] [stdout] |
[INFO] [stdout] 96 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:97:17
[INFO] [stdout] |
[INFO] [stdout] 97 | io::stdin().read_line(&mut new_reward);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:16:5
[INFO] [stdout] |
[INFO] [stdout] 16 | io::stdout().flush();
[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: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:17:5
[INFO] [stdout] |
[INFO] [stdout] 17 | io::stdin().read_line(&mut miner_addr);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:20:5
[INFO] [stdout] |
[INFO] [stdout] 20 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:21:5
[INFO] [stdout] |
[INFO] [stdout] 21 | io::stdin().read_line(&mut difficulty);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:36:9
[INFO] [stdout] |
[INFO] [stdout] 36 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:38:9
[INFO] [stdout] |
[INFO] [stdout] 38 | io::stdin().read_line(&mut choice);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:54:17
[INFO] [stdout] |
[INFO] [stdout] 54 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:55:17
[INFO] [stdout] |
[INFO] [stdout] 55 | io::stdin().read_line(&mut sender);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:58:17
[INFO] [stdout] |
[INFO] [stdout] 58 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:59:17
[INFO] [stdout] |
[INFO] [stdout] 59 | io::stdin().read_line(&mut reciever);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:62:17
[INFO] [stdout] |
[INFO] [stdout] 62 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:63:17
[INFO] [stdout] |
[INFO] [stdout] 63 | io::stdin().read_line(&mut amount);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:85:17
[INFO] [stdout] |
[INFO] [stdout] 85 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:86:17
[INFO] [stdout] |
[INFO] [stdout] 86 | io::stdin().read_line(&mut new_diff);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:96:17
[INFO] [stdout] |
[INFO] [stdout] 96 | io::stdout().flush();
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout] --> src/main.rs:97:17
[INFO] [stdout] |
[INFO] [stdout] 97 | io::stdin().read_line(&mut new_reward);
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 21.08s
[INFO] running `Command { std: "docker" "inspect" "c4e1dc26b6ffd7e69871431c18e5706a3c1a3701c2909d4cfd8dd821cb7bf08c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e1dc26b6ffd7e69871431c18e5706a3c1a3701c2909d4cfd8dd821cb7bf08c", kill_on_drop: false }`
[INFO] [stdout] c4e1dc26b6ffd7e69871431c18e5706a3c1a3701c2909d4cfd8dd821cb7bf08c