[INFO] cloning repository https://github.com/ShebangDog/rustack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ShebangDog/rustack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShebangDog%2Frustack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShebangDog%2Frustack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0dff54d0ed26097eeb6c946b7d5200019eb5275b
[INFO] building ShebangDog/rustack against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShebangDog%2Frustack" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ShebangDog/rustack 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 git repo https://github.com/ShebangDog/rustack
[INFO] finished tweaking git repo https://github.com/ShebangDog/rustack
[INFO] tweaked toml for git repo https://github.com/ShebangDog/rustack written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ShebangDog/rustack 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] 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] 690d18df1baff1e23a0cc7bb7fcd6a9f5e1ba651d2b6bf7f5824d1d00d987d33
[INFO] running `Command { std: "docker" "start" "-a" "690d18df1baff1e23a0cc7bb7fcd6a9f5e1ba651d2b6bf7f5824d1d00d987d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "690d18df1baff1e23a0cc7bb7fcd6a9f5e1ba651d2b6bf7f5824d1d00d987d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "690d18df1baff1e23a0cc7bb7fcd6a9f5e1ba651d2b6bf7f5824d1d00d987d33", kill_on_drop: false }`
[INFO] [stdout] 690d18df1baff1e23a0cc7bb7fcd6a9f5e1ba651d2b6bf7f5824d1d00d987d33
[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] 24fed4db83af5afe7ec9b46c4bbdfe9de3b8d081da66d597d1c027923ed49889
[INFO] running `Command { std: "docker" "start" "-a" "24fed4db83af5afe7ec9b46c4bbdfe9de3b8d081da66d597d1c027923ed49889", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling rustack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `error_list`
[INFO] [stdout]   --> src/main.rs:61:22
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let (input_list, error_list): (Vec<_>, Vec<_>) = io::stdin().lines().partition_result();
[INFO] [stdout]    |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_list`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "24fed4db83af5afe7ec9b46c4bbdfe9de3b8d081da66d597d1c027923ed49889", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24fed4db83af5afe7ec9b46c4bbdfe9de3b8d081da66d597d1c027923ed49889", kill_on_drop: false }`
[INFO] [stdout] 24fed4db83af5afe7ec9b46c4bbdfe9de3b8d081da66d597d1c027923ed49889
[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] bd969794d552e9ad43906b88911b2a551bd60571ca98d77716ef95cd2d196c9f
[INFO] running `Command { std: "docker" "start" "-a" "bd969794d552e9ad43906b88911b2a551bd60571ca98d77716ef95cd2d196c9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `error_list`
[INFO] [stdout]   --> src/main.rs:61:22
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let (input_list, error_list): (Vec<_>, Vec<_>) = io::stdin().lines().partition_result();
[INFO] [stdout]    |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_list`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "bd969794d552e9ad43906b88911b2a551bd60571ca98d77716ef95cd2d196c9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd969794d552e9ad43906b88911b2a551bd60571ca98d77716ef95cd2d196c9f", kill_on_drop: false }`
[INFO] [stdout] bd969794d552e9ad43906b88911b2a551bd60571ca98d77716ef95cd2d196c9f