[INFO] cloning repository https://github.com/mimuw-jnp2-rust/small-task-6-calculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mimuw-jnp2-rust/small-task-6-calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-6-calculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-6-calculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4ef4ec61e83b60db8640209cbcce6c43abcd72e
[INFO] checking mimuw-jnp2-rust/small-task-6-calculator against master#ba7e63b63871a429533c189adbfb1d9a6337e000 for pr-135331-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-6-calculator" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mimuw-jnp2-rust/small-task-6-calculator
[INFO] finished tweaking git repo https://github.com/mimuw-jnp2-rust/small-task-6-calculator
[INFO] tweaked toml for git repo https://github.com/mimuw-jnp2-rust/small-task-6-calculator written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mimuw-jnp2-rust/small-task-6-calculator on toolchain ba7e63b63871a429533c189adbfb1d9a6337e000
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba7e63b63871a429533c189adbfb1d9a6337e000" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mimuw-jnp2-rust/small-task-6-calculator 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" "+ba7e63b63871a429533c189adbfb1d9a6337e000" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+ba7e63b63871a429533c189adbfb1d9a6337e000" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 085fb7c711f0c67b131535120a243d0bf6ad2ac81e4d2ba34f687f251c7798be
[INFO] running `Command { std: "docker" "start" "-a" "085fb7c711f0c67b131535120a243d0bf6ad2ac81e4d2ba34f687f251c7798be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "085fb7c711f0c67b131535120a243d0bf6ad2ac81e4d2ba34f687f251c7798be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "085fb7c711f0c67b131535120a243d0bf6ad2ac81e4d2ba34f687f251c7798be", kill_on_drop: false }`
[INFO] [stdout] 085fb7c711f0c67b131535120a243d0bf6ad2ac81e4d2ba34f687f251c7798be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+ba7e63b63871a429533c189adbfb1d9a6337e000" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf436478263fa6c1a1c029d9c66d4aad0981ecbca435162e77ad8e00aa46d2f4
[INFO] running `Command { std: "docker" "start" "-a" "bf436478263fa6c1a1c029d9c66d4aad0981ecbca435162e77ad8e00aa46d2f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling syn v1.0.94
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking calculator_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/lib.rs:24:14
[INFO] [stdout]    |
[INFO] [stdout] 24 |         for (id, stream) in self.tcp_listener.incoming().enumerate() {
[INFO] [stdout]    |              ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stream`
[INFO] [stdout]   --> src/lib.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |         for (id, stream) in self.tcp_listener.incoming().enumerate() {
[INFO] [stdout]    |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/lib.rs:24:14
[INFO] [stdout]    |
[INFO] [stdout] 24 |         for (id, stream) in self.tcp_listener.incoming().enumerate() {
[INFO] [stdout]    |              ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stream`
[INFO] [stdout]   --> src/lib.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |         for (id, stream) in self.tcp_listener.incoming().enumerate() {
[INFO] [stdout]    |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.78s
[INFO] running `Command { std: "docker" "inspect" "bf436478263fa6c1a1c029d9c66d4aad0981ecbca435162e77ad8e00aa46d2f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf436478263fa6c1a1c029d9c66d4aad0981ecbca435162e77ad8e00aa46d2f4", kill_on_drop: false }`
[INFO] [stdout] bf436478263fa6c1a1c029d9c66d4aad0981ecbca435162e77ad8e00aa46d2f4