[INFO] fetching crate research 0.1.15...
[INFO] checking research-0.1.15 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate research 0.1.15 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate research 0.1.15 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate research 0.1.15
[INFO] finished tweaking crates.io crate research 0.1.15
[INFO] tweaked toml for crates.io crate research 0.1.15 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate research 0.1.15 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5ddd855f9ebfafc719a873ece42b5865fcc7629f25614d6a545cc8e46e08ef7
[INFO] running `Command { std: "docker" "start" "-a" "e5ddd855f9ebfafc719a873ece42b5865fcc7629f25614d6a545cc8e46e08ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5ddd855f9ebfafc719a873ece42b5865fcc7629f25614d6a545cc8e46e08ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5ddd855f9ebfafc719a873ece42b5865fcc7629f25614d6a545cc8e46e08ef7", kill_on_drop: false }`
[INFO] [stdout] e5ddd855f9ebfafc719a873ece42b5865fcc7629f25614d6a545cc8e46e08ef7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d73bd5ddbfbaaf7ae37002fbf4bac53f76ce072dcbd9eec82a45c19f1fd1e17
[INFO] running `Command { std: "docker" "start" "-a" "4d73bd5ddbfbaaf7ae37002fbf4bac53f76ce072dcbd9eec82a45c19f1fd1e17", kill_on_drop: false }`
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[INFO] [stderr]     Checking research v0.1.15 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `user_id` is never read
[INFO] [stdout]   --> src/db/mod.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Secrets {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub user_id: i64,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Secrets` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `user_id` is never read
[INFO] [stdout]   --> src/db/mod.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Secrets {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub user_id: i64,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Secrets` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 50.03s
[INFO] running `Command { std: "docker" "inspect" "4d73bd5ddbfbaaf7ae37002fbf4bac53f76ce072dcbd9eec82a45c19f1fd1e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d73bd5ddbfbaaf7ae37002fbf4bac53f76ce072dcbd9eec82a45c19f1fd1e17", kill_on_drop: false }`
[INFO] [stdout] 4d73bd5ddbfbaaf7ae37002fbf4bac53f76ce072dcbd9eec82a45c19f1fd1e17