[INFO] cloning repository https://github.com/vladborovtsov/performant-smtp-blackhole
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vladborovtsov/performant-smtp-blackhole" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladborovtsov%2Fperformant-smtp-blackhole", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladborovtsov%2Fperformant-smtp-blackhole'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a381da7272de689c572c73b8ebdf759a7cfd704
[INFO] checking vladborovtsov/performant-smtp-blackhole against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladborovtsov%2Fperformant-smtp-blackhole" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vladborovtsov/performant-smtp-blackhole on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vladborovtsov/performant-smtp-blackhole
[INFO] finished tweaking git repo https://github.com/vladborovtsov/performant-smtp-blackhole
[INFO] tweaked toml for git repo https://github.com/vladborovtsov/performant-smtp-blackhole written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vladborovtsov/performant-smtp-blackhole 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09a53a3e92561772f2fe201e312fde476d7d40433db1674e032e4043d8fe96c8
[INFO] running `Command { std: "docker" "start" "-a" "09a53a3e92561772f2fe201e312fde476d7d40433db1674e032e4043d8fe96c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09a53a3e92561772f2fe201e312fde476d7d40433db1674e032e4043d8fe96c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09a53a3e92561772f2fe201e312fde476d7d40433db1674e032e4043d8fe96c8", kill_on_drop: false }`
[INFO] [stdout] 09a53a3e92561772f2fe201e312fde476d7d40433db1674e032e4043d8fe96c8
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 503b04bc942b4bd3e862ac6e13097c68c83a1520e116e370795ef122d6e9acb1
[INFO] running `Command { std: "docker" "start" "-a" "503b04bc942b4bd3e862ac6e13097c68c83a1520e116e370795ef122d6e9acb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]    Compiling rustix v0.38.26
[INFO] [stderr]    Compiling openssl v0.10.60
[INFO] [stderr]     Checking futures-sink v0.3.29
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking linux-raw-sys v0.4.12
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking termcolor v1.4.0
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]    Compiling openssl-sys v0.9.96
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling futures-macro v0.3.29
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking env_logger v0.10.1
[INFO] [stderr]     Checking tokio v1.34.0
[INFO] [stderr]     Checking futures-executor v0.3.29
[INFO] [stderr]     Checking futures v0.3.29
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking performant-smtp-blackhole v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `AsyncBufReadExt`
[INFO] [stdout]  --> src/bin/performant_smtp_blackhole.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::io::{AsyncBufReadExt, AsyncRead, AsyncWrite};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncBufReadExt`
[INFO] [stdout]  --> src/bin/performant_smtp_blackhole.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::io::{AsyncBufReadExt, AsyncRead, AsyncWrite};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/bin/performant_smtp_blackhole.rs:123:18
[INFO] [stdout]     |
[INFO] [stdout] 123 |             let (result, _index, remaining_futures) = select_all(futures).await;
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/bin/performant_smtp_blackhole.rs:123:18
[INFO] [stdout]     |
[INFO] [stdout] 123 |             let (result, _index, remaining_futures) = select_all(futures).await;
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.30s
[INFO] running `Command { std: "docker" "inspect" "503b04bc942b4bd3e862ac6e13097c68c83a1520e116e370795ef122d6e9acb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "503b04bc942b4bd3e862ac6e13097c68c83a1520e116e370795ef122d6e9acb1", kill_on_drop: false }`
[INFO] [stdout] 503b04bc942b4bd3e862ac6e13097c68c83a1520e116e370795ef122d6e9acb1