[INFO] fetching crate pigeon-rs 0.4.2...
[INFO] checking pigeon-rs-0.4.2 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate pigeon-rs 0.4.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate pigeon-rs 0.4.2 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate pigeon-rs 0.4.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate pigeon-rs 0.4.2
[INFO] tweaked toml for crates.io crate pigeon-rs 0.4.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate pigeon-rs 0.4.2 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f898a87803c1210c6ebdf3a5467881214b86df797a9a0c403a5562d71fb90644
[INFO] running `Command { std: "docker" "start" "-a" "f898a87803c1210c6ebdf3a5467881214b86df797a9a0c403a5562d71fb90644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f898a87803c1210c6ebdf3a5467881214b86df797a9a0c403a5562d71fb90644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f898a87803c1210c6ebdf3a5467881214b86df797a9a0c403a5562d71fb90644", kill_on_drop: false }`
[INFO] [stdout] f898a87803c1210c6ebdf3a5467881214b86df797a9a0c403a5562d71fb90644
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec6a4a05d1bef9617ba76ece9e250b288031bd6307efb0979e33016eef8be746
[INFO] running `Command { std: "docker" "start" "-a" "ec6a4a05d1bef9617ba76ece9e250b288031bd6307efb0979e33016eef8be746", kill_on_drop: false }`
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[INFO] [stdout] warning: field `region_name` is never read
[INFO] [stdout]   --> src/email_provider/aws.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct AwsSesClient {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 17 |     pub region_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sender` and `message` are never read
[INFO] [stdout]  --> src/email_transmission/sent_email.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct SentEmail<'a> {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 6 |     pub sender: Sender<'a>,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 7 |     pub receiver: Receiver<'a>,
[INFO] [stdout] 8 |     pub message: &'a Message,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SentEmail` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `endpoint` is never read
[INFO] [stdout]   --> src/email_transmission/smtp.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct SmtpClient {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 11 |     pub endpoint: String,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `region_name` is never read
[INFO] [stdout]   --> src/email_provider/aws.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct AwsSesClient {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 17 |     pub region_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sender` and `message` are never read
[INFO] [stdout]  --> src/email_transmission/sent_email.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct SentEmail<'a> {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 6 |     pub sender: Sender<'a>,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 7 |     pub receiver: Receiver<'a>,
[INFO] [stdout] 8 |     pub message: &'a Message,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SentEmail` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `endpoint` is never read
[INFO] [stdout]   --> src/email_transmission/smtp.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct SmtpClient {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 11 |     pub endpoint: String,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "ec6a4a05d1bef9617ba76ece9e250b288031bd6307efb0979e33016eef8be746", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec6a4a05d1bef9617ba76ece9e250b288031bd6307efb0979e33016eef8be746", kill_on_drop: false }`
[INFO] [stdout] ec6a4a05d1bef9617ba76ece9e250b288031bd6307efb0979e33016eef8be746