[INFO] cloning repository https://github.com/kszinhu/secret-friend-sorter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kszinhu/secret-friend-sorter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkszinhu%2Fsecret-friend-sorter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkszinhu%2Fsecret-friend-sorter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6af2c32aca5567bc6c15434b0d5499c00ce87430
[INFO] checking kszinhu/secret-friend-sorter against try#2cbf9c3ff35600794d69a7dc7ab399810a067910 for pr-129249-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkszinhu%2Fsecret-friend-sorter" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kszinhu/secret-friend-sorter
[INFO] finished tweaking git repo https://github.com/kszinhu/secret-friend-sorter
[INFO] tweaked toml for git repo https://github.com/kszinhu/secret-friend-sorter written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kszinhu/secret-friend-sorter on toolchain 2cbf9c3ff35600794d69a7dc7ab399810a067910
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kszinhu/secret-friend-sorter 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" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f7f75447c827a26d666f8413e41ec562586182ce2434f4d64b199718dc412c5c
[INFO] running `Command { std: "docker" "start" "f7f75447c827a26d666f8413e41ec562586182ce2434f4d64b199718dc412c5c", 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" "f7f75447c827a26d666f8413e41ec562586182ce2434f4d64b199718dc412c5c" "/opt/rustwide/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7f75447c827a26d666f8413e41ec562586182ce2434f4d64b199718dc412c5c", 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" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f7f75447c827a26d666f8413e41ec562586182ce2434f4d64b199718dc412c5c" "/opt/rustwide/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking smallvec v1.13.2
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[INFO] [stdout] warning: struct `MailConfig` is never constructed
[INFO] [stdout]   --> src/utils/mail_sender.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct MailConfig {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `send_secret_friend_email` is never used
[INFO] [stdout]   --> src/utils/mail_sender.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub async fn send_secret_friend_email(config: &MailConfig, friend: &SecretFriend) -> Result<()> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]  --> src/utils/person.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Person {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SecretFriend` is never constructed
[INFO] [stdout]   --> src/utils/person.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct SecretFriend {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_people` is never used
[INFO] [stdout]  --> src/utils/sorter.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn validate_people(people: &[Person], amount: usize) -> Result<()> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_secret_friends` is never used
[INFO] [stdout]   --> src/utils/sorter.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn sort_secret_friends(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Person` instead of cloning the inner type
[INFO] [stdout]   --> src/utils/sorter.rs:80:74
[INFO] [stdout]    |
[INFO] [stdout] 80 |             let secret_friend = best_candidates.choose(&mut rng).unwrap().clone();
[INFO] [stdout]    |                                                                          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MailConfig` is never constructed
[INFO] [stdout]   --> src/utils/mail_sender.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct MailConfig {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `send_secret_friend_email` is never used
[INFO] [stdout]   --> src/utils/mail_sender.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub async fn send_secret_friend_email(config: &MailConfig, friend: &SecretFriend) -> Result<()> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]  --> src/utils/person.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Person {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SecretFriend` is never constructed
[INFO] [stdout]   --> src/utils/person.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct SecretFriend {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_people` is never used
[INFO] [stdout]  --> src/utils/sorter.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn validate_people(people: &[Person], amount: usize) -> Result<()> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_secret_friends` is never used
[INFO] [stdout]   --> src/utils/sorter.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn sort_secret_friends(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Person` instead of cloning the inner type
[INFO] [stdout]   --> src/utils/sorter.rs:80:74
[INFO] [stdout]    |
[INFO] [stdout] 80 |             let secret_friend = best_candidates.choose(&mut rng).unwrap().clone();
[INFO] [stdout]    |                                                                          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `smtp_server` and `smtp_port` are never read
[INFO] [stdout]   --> src/utils/mail_sender.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct MailConfig {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 11 |     pub smtp_server: String,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 12 |     pub smtp_port: u16,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Person` instead of cloning the inner type
[INFO] [stdout]   --> src/utils/sorter.rs:80:74
[INFO] [stdout]    |
[INFO] [stdout] 80 |             let secret_friend = best_candidates.choose(&mut rng).unwrap().clone();
[INFO] [stdout]    |                                                                          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `smtp_server` and `smtp_port` are never read
[INFO] [stdout]   --> src/utils/mail_sender.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct MailConfig {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 11 |     pub smtp_server: String,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 12 |     pub smtp_port: u16,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Person` instead of cloning the inner type
[INFO] [stdout]   --> src/utils/sorter.rs:80:74
[INFO] [stdout]    |
[INFO] [stdout] 80 |             let secret_friend = best_candidates.choose(&mut rng).unwrap().clone();
[INFO] [stdout]    |                                                                          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.34s
[INFO] running `Command { std: "docker" "inspect" "f7f75447c827a26d666f8413e41ec562586182ce2434f4d64b199718dc412c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7f75447c827a26d666f8413e41ec562586182ce2434f4d64b199718dc412c5c", kill_on_drop: false }`
[INFO] [stdout] f7f75447c827a26d666f8413e41ec562586182ce2434f4d64b199718dc412c5c
