[INFO] fetching crate lcd1602_gpio 0.1.0...
[INFO] building lcd1602_gpio-0.1.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate lcd1602_gpio 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate lcd1602_gpio 0.1.0 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lcd1602_gpio 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate lcd1602_gpio 0.1.0
[INFO] tweaked toml for crates.io crate lcd1602_gpio 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate lcd1602_gpio 0.1.0 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rppal v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df445260465652a2f9a06a19129306c51adf0109b75e9e43d26a0a48a49910a7
[INFO] running `Command { std: "docker" "start" "-a" "df445260465652a2f9a06a19129306c51adf0109b75e9e43d26a0a48a49910a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df445260465652a2f9a06a19129306c51adf0109b75e9e43d26a0a48a49910a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df445260465652a2f9a06a19129306c51adf0109b75e9e43d26a0a48a49910a7", kill_on_drop: false }`
[INFO] [stdout] df445260465652a2f9a06a19129306c51adf0109b75e9e43d26a0a48a49910a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0857ab4a4be1b47dd0985ac8adf7cdc6858eef23d3df40960f8d6b6445a90a3f
[INFO] running `Command { std: "docker" "start" "-a" "0857ab4a4be1b47dd0985ac8adf7cdc6858eef23d3df40960f8d6b6445a90a3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling rppal v0.16.0
[INFO] [stderr]    Compiling lcd1602_gpio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, and `mpsc`
[INFO] [stdout]  --> src/lib.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::{mpsc, Arc, Mutex};
[INFO] [stdout]   |                 ^^^^  ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "0857ab4a4be1b47dd0985ac8adf7cdc6858eef23d3df40960f8d6b6445a90a3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0857ab4a4be1b47dd0985ac8adf7cdc6858eef23d3df40960f8d6b6445a90a3f", kill_on_drop: false }`
[INFO] [stdout] 0857ab4a4be1b47dd0985ac8adf7cdc6858eef23d3df40960f8d6b6445a90a3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc3f7bcac8e923a48c67fba0d74595d062c43d9e0b87001e43282c6c62a8bf47
[INFO] running `Command { std: "docker" "start" "-a" "fc3f7bcac8e923a48c67fba0d74595d062c43d9e0b87001e43282c6c62a8bf47", kill_on_drop: false }`
[INFO] [stderr]    Compiling lcd1602_gpio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, and `mpsc`
[INFO] [stdout]  --> src/lib.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::{mpsc, Arc, Mutex};
[INFO] [stdout]   |                 ^^^^  ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, and `mpsc`
[INFO] [stdout]  --> src/lib.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::{mpsc, Arc, Mutex};
[INFO] [stdout]   |                 ^^^^  ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "fc3f7bcac8e923a48c67fba0d74595d062c43d9e0b87001e43282c6c62a8bf47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc3f7bcac8e923a48c67fba0d74595d062c43d9e0b87001e43282c6c62a8bf47", kill_on_drop: false }`
[INFO] [stdout] fc3f7bcac8e923a48c67fba0d74595d062c43d9e0b87001e43282c6c62a8bf47