[INFO] fetching crate be-rust-master 0.1.0...
[INFO] checking be-rust-master-0.1.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate be-rust-master 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate be-rust-master 0.1.0 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate be-rust-master 0.1.0
[INFO] finished tweaking crates.io crate be-rust-master 0.1.0
[INFO] tweaked toml for crates.io crate be-rust-master 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate be-rust-master 0.1.0 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8c5dae2e75c7179792aa29a56f6c4770fb7c5577b104ebddd6457e2a028620d
[INFO] running `Command { std: "docker" "start" "-a" "f8c5dae2e75c7179792aa29a56f6c4770fb7c5577b104ebddd6457e2a028620d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8c5dae2e75c7179792aa29a56f6c4770fb7c5577b104ebddd6457e2a028620d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8c5dae2e75c7179792aa29a56f6c4770fb7c5577b104ebddd6457e2a028620d", kill_on_drop: false }`
[INFO] [stdout] f8c5dae2e75c7179792aa29a56f6c4770fb7c5577b104ebddd6457e2a028620d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2184b4cdcb4e4e3ba3f89ab8f575ad6bb049c5a1485dba555af2e18da6e27794
[INFO] running `Command { std: "docker" "start" "-a" "2184b4cdcb4e4e3ba3f89ab8f575ad6bb049c5a1485dba555af2e18da6e27794", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.83
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.65
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking parking_lot v0.12.2
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking be-rust-master v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/error_handling_functions.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/error_handling_functions.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_network_handler` is never used
[INFO] [stdout]  --> src/network_handler.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn start_network_handler() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_connection` is never used
[INFO] [stdout]   --> src/network_handler.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn handle_connection(stream: TcpStream, sender: mpsc::Sender<String>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_network_handler` is never used
[INFO] [stdout]  --> src/network_handler.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn start_network_handler() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_connection` is never used
[INFO] [stdout]   --> src/network_handler.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn handle_connection(stream: TcpStream, sender: mpsc::Sender<String>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.06s
[INFO] running `Command { std: "docker" "inspect" "2184b4cdcb4e4e3ba3f89ab8f575ad6bb049c5a1485dba555af2e18da6e27794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2184b4cdcb4e4e3ba3f89ab8f575ad6bb049c5a1485dba555af2e18da6e27794", kill_on_drop: false }`
[INFO] [stdout] 2184b4cdcb4e4e3ba3f89ab8f575ad6bb049c5a1485dba555af2e18da6e27794