[INFO] cloning repository https://github.com/stanlley-locke/email-verifier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stanlley-locke/email-verifier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstanlley-locke%2Femail-verifier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstanlley-locke%2Femail-verifier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c001fb8b228070c04a2abc4fd6daa2371a776bd3
[INFO] checking stanlley-locke/email-verifier against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstanlley-locke%2Femail-verifier" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/stanlley-locke/email-verifier
[INFO] finished tweaking git repo https://github.com/stanlley-locke/email-verifier
[INFO] tweaked toml for git repo https://github.com/stanlley-locke/email-verifier written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/stanlley-locke/email-verifier on toolchain 40527f3e444fde1deb361751bdef9b9e11d1b971
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/stanlley-locke/email-verifier 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" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] afdcd50db9187b9d78cdfbeff36e45f5787f6d4d6b7efe468b5c57ce053fe2d5
[INFO] running `Command { std: "docker" "start" "afdcd50db9187b9d78cdfbeff36e45f5787f6d4d6b7efe468b5c57ce053fe2d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afdcd50db9187b9d78cdfbeff36e45f5787f6d4d6b7efe468b5c57ce053fe2d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "afdcd50db9187b9d78cdfbeff36e45f5787f6d4d6b7efe468b5c57ce053fe2d5" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afdcd50db9187b9d78cdfbeff36e45f5787f6d4d6b7efe468b5c57ce053fe2d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid --cfg crater_hack --force-warn invalid-c-variadic-arguments" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "afdcd50db9187b9d78cdfbeff36e45f5787f6d4d6b7efe468b5c57ce053fe2d5" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking email-verifier v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]  --> src/typo_correction.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use regex::Regex;
[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 imports: `MAX_RETRIES` and `SMTP_TIMEOUT`
[INFO] [stdout]  --> src/verifier.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::config::{FREE_EMAIL_PROVIDERS, MAX_RETRIES, RETRY_BACKOFF_BASE, RETRY_BACKOFF_MAX, SMTP_TIMEOUT};
[INFO] [stdout]   |                                           ^^^^^^^^^^^                                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]  --> src/typo_correction.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use regex::Regex;
[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 imports: `MAX_RETRIES` and `SMTP_TIMEOUT`
[INFO] [stdout]  --> src/verifier.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::config::{FREE_EMAIL_PROVIDERS, MAX_RETRIES, RETRY_BACKOFF_BASE, RETRY_BACKOFF_MAX, SMTP_TIMEOUT};
[INFO] [stdout]   |                                           ^^^^^^^^^^^                                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `email_col`
[INFO] [stdout]    --> src/file_io.rs:114:14
[INFO] [stdout]     |
[INFO] [stdout] 114 |         for (email_col, status_col) in status_columns.iter().rev() {
[INFO] [stdout]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_email_col`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `email_col`
[INFO] [stdout]    --> src/file_io.rs:114:14
[INFO] [stdout]     |
[INFO] [stdout] 114 |         for (email_col, status_col) in status_columns.iter().rev() {
[INFO] [stdout]     |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_email_col`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]    --> src/verifier.rs:185:31
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     Ok((code, msg, diag)) => {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diag`
[INFO] [stdout]    --> src/verifier.rs:185:36
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     Ok((code, msg, diag)) => {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_diag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]    --> src/verifier.rs:185:31
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     Ok((code, msg, diag)) => {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diag`
[INFO] [stdout]    --> src/verifier.rs:185:36
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     Ok((code, msg, diag)) => {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_diag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SMTP_SENDER` is never used
[INFO] [stdout]   --> src/config.rs:83:11
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub const SMTP_SENDER: &str = "verify@email-verifier.local";
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_RETRIES` is never used
[INFO] [stdout]   --> src/config.rs:85:11
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub const MAX_RETRIES: u32 = 3;
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_WORKERS` is never used
[INFO] [stdout]   --> src/config.rs:89:11
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub const MAX_WORKERS: usize = 20;
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BATCH_SIZE` is never used
[INFO] [stdout]   --> src/config.rs:90:11
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub const BATCH_SIZE: usize = 100;
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_negative` is never used
[INFO] [stdout]   --> src/types.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl VerificationStatus {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn is_negative(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `domain` is never read
[INFO] [stdout]   --> src/types.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub struct DomainInfo {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 98 |     pub domain: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DomainInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `VerificationTask` is never used
[INFO] [stdout]    --> src/types.rs:140:10
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub type VerificationTask = (usize, usize, usize, String, String, String, bool, Option<String>);
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SMTP_SENDER` is never used
[INFO] [stdout]   --> src/config.rs:83:11
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub const SMTP_SENDER: &str = "verify@email-verifier.local";
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_RETRIES` is never used
[INFO] [stdout]   --> src/config.rs:85:11
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub const MAX_RETRIES: u32 = 3;
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_WORKERS` is never used
[INFO] [stdout]   --> src/config.rs:89:11
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub const MAX_WORKERS: usize = 20;
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BATCH_SIZE` is never used
[INFO] [stdout]   --> src/config.rs:90:11
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub const BATCH_SIZE: usize = 100;
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_negative` is never used
[INFO] [stdout]   --> src/types.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl VerificationStatus {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn is_negative(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `domain` is never read
[INFO] [stdout]   --> src/types.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub struct DomainInfo {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 98 |     pub domain: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DomainInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `VerificationTask` is never used
[INFO] [stdout]    --> src/types.rs:140:10
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub type VerificationTask = (usize, usize, usize, String, String, String, bool, Option<String>);
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused dependency `dashmap`
[INFO] [stderr]  --> Cargo.toml:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | dashmap = "5.5"
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `dashmap`
[INFO] [stderr] warning: unused dependency `futures`
[INFO] [stderr]  --> Cargo.toml:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | futures = "0.3"
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: consider removing the dependency on `futures`
[INFO] [stderr] warning: unused dependency `rayon`
[INFO] [stderr]   --> Cargo.toml:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | rayon = "1.8"
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `rayon`
[INFO] [stderr] warning: unused dependency `reqwest`
[INFO] [stderr]   --> Cargo.toml:35:15
[INFO] [stderr]    |
[INFO] [stderr] 35 | [dependencies.reqwest]
[INFO] [stderr]    |               ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `reqwest`
[INFO] [stderr] warning: `email-verifier` (manifest) generated 4 warnings
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 56.28s
[INFO] running `Command { std: "docker" "inspect" "afdcd50db9187b9d78cdfbeff36e45f5787f6d4d6b7efe468b5c57ce053fe2d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afdcd50db9187b9d78cdfbeff36e45f5787f6d4d6b7efe468b5c57ce053fe2d5", kill_on_drop: false }`
[INFO] [stdout] afdcd50db9187b9d78cdfbeff36e45f5787f6d4d6b7efe468b5c57ce053fe2d5
