[INFO] fetching crate parrot_ar_drone 0.1.3...
[INFO] checking parrot_ar_drone-0.1.3 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate parrot_ar_drone 0.1.3 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate parrot_ar_drone 0.1.3 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 parrot_ar_drone 0.1.3
[INFO] finished tweaking crates.io crate parrot_ar_drone 0.1.3
[INFO] tweaked toml for crates.io crate parrot_ar_drone 0.1.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 37 packages to latest compatible versions
[INFO] [stderr]       Adding windows-core v0.52.0 (available: v0.58.0)
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b97f89a6a9b3b4353cdb8861113f57abbbd8bd997827f5452c51faef98cef136
[INFO] running `Command { std: "docker" "start" "-a" "b97f89a6a9b3b4353cdb8861113f57abbbd8bd997827f5452c51faef98cef136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b97f89a6a9b3b4353cdb8861113f57abbbd8bd997827f5452c51faef98cef136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b97f89a6a9b3b4353cdb8861113f57abbbd8bd997827f5452c51faef98cef136", kill_on_drop: false }`
[INFO] [stdout] b97f89a6a9b3b4353cdb8861113f57abbbd8bd997827f5452c51faef98cef136
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 2d8d4a6c69e8aca1be7b03e3a6ca68a5d880dc6390b47db3c1a2a2c963f276d6
[INFO] running `Command { std: "docker" "start" "-a" "2d8d4a6c69e8aca1be7b03e3a6ca68a5d880dc6390b47db3c1a2a2c963f276d6", kill_on_drop: false }`
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking timer v0.2.0
[INFO] [stderr]     Checking parrot_ar_drone v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `config_data`, `config_sending`, and `send_config_save_mode` are never read
[INFO] [stdout]   --> src/droneconfig.rs:8:9
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct DroneConfig {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 8  |     pub config_data: Vec<(String, String)>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 9  |     pub config_sending: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub send_config_save_mode: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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: fields `config_data`, `config_sending`, and `send_config_save_mode` are never read
[INFO] [stdout]   --> src/droneconfig.rs:8:9
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct DroneConfig {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 8  |     pub config_data: Vec<(String, String)>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 9  |     pub config_sending: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub send_config_save_mode: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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 1.86s
[INFO] running `Command { std: "docker" "inspect" "2d8d4a6c69e8aca1be7b03e3a6ca68a5d880dc6390b47db3c1a2a2c963f276d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d8d4a6c69e8aca1be7b03e3a6ca68a5d880dc6390b47db3c1a2a2c963f276d6", kill_on_drop: false }`
[INFO] [stdout] 2d8d4a6c69e8aca1be7b03e3a6ca68a5d880dc6390b47db3c1a2a2c963f276d6