[INFO] cloning repository https://github.com/lepash/smtp-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lepash/smtp-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flepash%2Fsmtp-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flepash%2Fsmtp-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ff45214d014cd97c672be0a635dacfb2333854b
[INFO] testing lepash/smtp-rust against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flepash%2Fsmtp-rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lepash/smtp-rust
[INFO] finished tweaking git repo https://github.com/lepash/smtp-rust
[INFO] tweaked toml for git repo https://github.com/lepash/smtp-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lepash/smtp-rust on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lepash/smtp-rust 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5eb568aee4fd59bbfea49110855f6e1cf8f36df833790e19e2a12a2e458ab63d
[INFO] running `Command { std: "docker" "start" "-a" "5eb568aee4fd59bbfea49110855f6e1cf8f36df833790e19e2a12a2e458ab63d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5eb568aee4fd59bbfea49110855f6e1cf8f36df833790e19e2a12a2e458ab63d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eb568aee4fd59bbfea49110855f6e1cf8f36df833790e19e2a12a2e458ab63d", kill_on_drop: false }`
[INFO] [stdout] 5eb568aee4fd59bbfea49110855f6e1cf8f36df833790e19e2a12a2e458ab63d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0360b073336732231f43815bf0cefa3695bb48a108502e004b10127ec68984b2
[INFO] running `Command { std: "docker" "start" "-a" "0360b073336732231f43815bf0cefa3695bb48a108502e004b10127ec68984b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling ctrlc v3.4.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling smtp-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `server`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider adding a `main` function to `src/bin/server.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smtp-rust` (bin "server") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: type `SMTP_COMMAND` should have an upper camel case name
[INFO] [stdout]  --> src/bin/client.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum SMTP_COMMAND {
[INFO] [stdout]   |      ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `SmtpCommand`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `CLIENT_STATE` should have an upper camel case name
[INFO] [stdout]   --> src/bin/client.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | enum CLIENT_STATE {
[INFO] [stdout]    |      ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ClientState`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `clients`
[INFO] [stdout]   --> src/bin/client.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let clients: HashMap<SocketAddr, CLIENT_STATE>  = HashMap::new();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_clients`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_receiver`
[INFO] [stdout]   --> src/bin/client.rs:48:10
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let (tx_receiver, rx_receiver) = mpsc::sync_channel::<TcpStream>(QUEUE_SIZE);
[INFO] [stdout]    |          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_receiver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx_receiver`
[INFO] [stdout]   --> src/bin/client.rs:48:23
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let (tx_receiver, rx_receiver) = mpsc::sync_channel::<TcpStream>(QUEUE_SIZE);
[INFO] [stdout]    |                       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx_receiver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stream`
[INFO] [stdout]   --> src/bin/client.rs:65:29
[INFO] [stdout]    |
[INFO] [stdout] 65 |                         Ok((stream, sock_addr)) =>  {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sock_addr`
[INFO] [stdout]   --> src/bin/client.rs:65:37
[INFO] [stdout]    |
[INFO] [stdout] 65 |                         Ok((stream, sock_addr)) =>  {
[INFO] [stdout]    |                                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sock_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SMTP_COMMAND` is never used
[INFO] [stdout]  --> src/bin/client.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum SMTP_COMMAND {
[INFO] [stdout]   |      ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0360b073336732231f43815bf0cefa3695bb48a108502e004b10127ec68984b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0360b073336732231f43815bf0cefa3695bb48a108502e004b10127ec68984b2", kill_on_drop: false }`
[INFO] [stdout] 0360b073336732231f43815bf0cefa3695bb48a108502e004b10127ec68984b2