[INFO] cloning repository https://github.com/BonusPlay/mailduck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BonusPlay/mailduck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBonusPlay%2Fmailduck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBonusPlay%2Fmailduck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 458ef897de29dac664b773fbf03b31b16d69e950
[INFO] checking BonusPlay/mailduck against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBonusPlay%2Fmailduck" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/BonusPlay/mailduck
[INFO] finished tweaking git repo https://github.com/BonusPlay/mailduck
[INFO] tweaked toml for git repo https://github.com/BonusPlay/mailduck written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BonusPlay/mailduck on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/BonusPlay/mailduck 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-error v0.2.0
[INFO] [stderr]   Downloaded tracing-core v0.1.22
[INFO] [stderr]   Downloaded indenter v0.3.3
[INFO] [stderr]   Downloaded pin-project-lite v0.2.8
[INFO] [stderr]   Downloaded async-trait v0.1.52
[INFO] [stderr]   Downloaded owo-colors v3.2.0
[INFO] [stderr]   Downloaded eyre v0.6.6
[INFO] [stderr]   Downloaded tracing v0.1.30
[INFO] [stderr]   Downloaded backtrace v0.3.64
[INFO] [stderr]   Downloaded once_cell v1.9.0
[INFO] [stderr]   Downloaded addr2line v0.17.0
[INFO] [stderr]   Downloaded color-spantrace v0.2.0
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.8
[INFO] [stderr]   Downloaded object v0.27.1
[INFO] [stderr]   Downloaded tokio v1.16.1
[INFO] [stderr]   Downloaded libc v0.2.117
[INFO] [stderr]   Downloaded color-eyre v0.6.0
[INFO] [stderr]   Downloaded gimli v0.26.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b5554c153dc8ca3bf49b8814eef0b9b7061c15f57189f4fde2a61d39cd16a5f
[INFO] running `Command { std: "docker" "start" "-a" "7b5554c153dc8ca3bf49b8814eef0b9b7061c15f57189f4fde2a61d39cd16a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b5554c153dc8ca3bf49b8814eef0b9b7061c15f57189f4fde2a61d39cd16a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b5554c153dc8ca3bf49b8814eef0b9b7061c15f57189f4fde2a61d39cd16a5f", kill_on_drop: false }`
[INFO] [stdout] 7b5554c153dc8ca3bf49b8814eef0b9b7061c15f57189f4fde2a61d39cd16a5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ecc3f38ea0193e267d21cbb10ae506325ae997a0e2f73fab4c38920d1c2fddc
[INFO] running `Command { std: "docker" "start" "-a" "4ecc3f38ea0193e267d21cbb10ae506325ae997a0e2f73fab4c38920d1c2fddc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]     Checking tracing-core v0.1.22
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling eyre v0.6.6
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking owo-colors v3.2.0
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]     Checking tracing v0.1.30
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking tracing-subscriber v0.3.8
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.16.1
[INFO] [stderr]     Checking color-eyre v0.6.0
[INFO] [stderr]     Checking mailduck v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::error::*`
[INFO] [stdout]  --> src/smtp/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use self::error::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::error::*`
[INFO] [stdout]  --> src/smtp/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use self::error::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `value` are never read
[INFO] [stdout]   --> src/smtp/commands/mail_from.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct SmtpParam {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 14 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 15 |     pub value: String,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SmtpParam` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `reverse_path` and `params` are never read
[INFO] [stdout]   --> src/smtp/commands/mail_from.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct SmtpMailFrom {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 20 |     pub reverse_path: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 21 |     pub params: Vec<SmtpParam>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SmtpMailFrom` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             handle_connection(&mut socket).await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let _ = handle_connection(&mut socket).await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `value` are never read
[INFO] [stdout]   --> src/smtp/commands/mail_from.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct SmtpParam {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 14 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 15 |     pub value: String,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SmtpParam` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `reverse_path` and `params` are never read
[INFO] [stdout]   --> src/smtp/commands/mail_from.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct SmtpMailFrom {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 20 |     pub reverse_path: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 21 |     pub params: Vec<SmtpParam>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SmtpMailFrom` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             handle_connection(&mut socket).await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let _ = handle_connection(&mut socket).await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.70s
[INFO] running `Command { std: "docker" "inspect" "4ecc3f38ea0193e267d21cbb10ae506325ae997a0e2f73fab4c38920d1c2fddc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ecc3f38ea0193e267d21cbb10ae506325ae997a0e2f73fab4c38920d1c2fddc", kill_on_drop: false }`
[INFO] [stdout] 4ecc3f38ea0193e267d21cbb10ae506325ae997a0e2f73fab4c38920d1c2fddc