[INFO] fetching crate log4rs-syslog-net 0.2.2...
[INFO] checking log4rs-syslog-net-0.2.2 against 1.55.0 for beta-1.56-3
[INFO] extracting crate log4rs-syslog-net 0.2.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate log4rs-syslog-net 0.2.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate log4rs-syslog-net 0.2.2
[INFO] finished tweaking crates.io crate log4rs-syslog-net 0.2.2
[INFO] tweaked toml for crates.io crate log4rs-syslog-net 0.2.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b84742f1b893a10c0936cc3a753e00bce5501dbf790ac954d82cb4dec117ad6
[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" "0b84742f1b893a10c0936cc3a753e00bce5501dbf790ac954d82cb4dec117ad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b84742f1b893a10c0936cc3a753e00bce5501dbf790ac954d82cb4dec117ad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b84742f1b893a10c0936cc3a753e00bce5501dbf790ac954d82cb4dec117ad6", kill_on_drop: false }`
[INFO] [stdout] 0b84742f1b893a10c0936cc3a753e00bce5501dbf790ac954d82cb4dec117ad6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--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] 1b18d321b3dfda83779dd159a0fd1ba8e43e2bac689dd111fe87a2a9d8d17e2e
[INFO] running `Command { std: "docker" "start" "-a" "1b18d321b3dfda83779dd159a0fd1ba8e43e2bac689dd111fe87a2a9d8d17e2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking arc-swap v0.4.8
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking log4rs v0.13.0
[INFO] [stderr]     Checking log4rs-syslog-net v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/lib.rs:111:36
[INFO] [stdout]     |
[INFO] [stdout] 111 |         std::thread::spawn(move || 'outer: loop {
[INFO] [stdout]     |                                    ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/lib.rs:111:36
[INFO] [stdout]     |
[INFO] [stdout] 111 |         std::thread::spawn(move || 'outer: loop {
[INFO] [stdout]     |                                    ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:123:33
[INFO] [stdout]     |
[INFO] [stdout] 123 | ...                   conn.write_all(&v);
[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 `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:124:33
[INFO] [stdout]     |
[INFO] [stdout] 124 | ...                   conn.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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:123:33
[INFO] [stdout]     |
[INFO] [stdout] 123 | ...                   conn.write_all(&v);
[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 `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:124:33
[INFO] [stdout]     |
[INFO] [stdout] 124 | ...                   conn.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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.02s
[INFO] running `Command { std: "docker" "inspect" "1b18d321b3dfda83779dd159a0fd1ba8e43e2bac689dd111fe87a2a9d8d17e2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b18d321b3dfda83779dd159a0fd1ba8e43e2bac689dd111fe87a2a9d8d17e2e", kill_on_drop: false }`
[INFO] [stdout] 1b18d321b3dfda83779dd159a0fd1ba8e43e2bac689dd111fe87a2a9d8d17e2e
