[INFO] cloning repository https://github.com/drm-solister/hex_convert
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/drm-solister/hex_convert" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrm-solister%2Fhex_convert", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrm-solister%2Fhex_convert'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cae739d6a3f79595079e9c35bb9b772edfd84855
[INFO] building drm-solister/hex_convert 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%2Fdrm-solister%2Fhex_convert" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/drm-solister/hex_convert 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/drm-solister/hex_convert
[INFO] finished tweaking git repo https://github.com/drm-solister/hex_convert
[INFO] tweaked toml for git repo https://github.com/drm-solister/hex_convert written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/drm-solister/hex_convert 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 input-event-codes v0.2.2
[INFO] [stderr]   Downloaded getch v0.3.1
[INFO] [stderr]   Downloaded pancurses v0.17.0
[INFO] [stderr]   Downloaded device_query v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3be1837d8ac028b653176527fb098b0f364e4f91411a07f6936055f9762f397f
[INFO] running `Command { std: "docker" "start" "-a" "3be1837d8ac028b653176527fb098b0f364e4f91411a07f6936055f9762f397f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3be1837d8ac028b653176527fb098b0f364e4f91411a07f6936055f9762f397f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3be1837d8ac028b653176527fb098b0f364e4f91411a07f6936055f9762f397f", kill_on_drop: false }`
[INFO] [stdout] 3be1837d8ac028b653176527fb098b0f364e4f91411a07f6936055f9762f397f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3249e286bb88205dfbf486ede29fafd1a59b2f82e92d46894ebad621aff41790
[INFO] running `Command { std: "docker" "start" "-a" "3249e286bb88205dfbf486ede29fafd1a59b2f82e92d46894ebad621aff41790", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling input-event-codes v0.2.2
[INFO] [stderr]    Compiling x11 v2.19.1
[INFO] [stderr]    Compiling device_query v1.0.0
[INFO] [stderr]    Compiling ncurses v5.101.0
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling getch v0.3.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pancurses v0.17.0
[INFO] [stderr]    Compiling hex_convert v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output_bits`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let output_bits = 8; // by default will output to 8 bits
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_bits`
[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 2.61s
[INFO] running `Command { std: "docker" "inspect" "3249e286bb88205dfbf486ede29fafd1a59b2f82e92d46894ebad621aff41790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3249e286bb88205dfbf486ede29fafd1a59b2f82e92d46894ebad621aff41790", kill_on_drop: false }`
[INFO] [stdout] 3249e286bb88205dfbf486ede29fafd1a59b2f82e92d46894ebad621aff41790
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f3fa382a12f111cabb5bcaf39d40dc80968ea5b1d66fc9b9d4e846a578034d3c
[INFO] running `Command { std: "docker" "start" "-a" "f3fa382a12f111cabb5bcaf39d40dc80968ea5b1d66fc9b9d4e846a578034d3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling hex_convert v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output_bits`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let output_bits = 8; // by default will output to 8 bits
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_bits`
[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 0.14s
[INFO] running `Command { std: "docker" "inspect" "f3fa382a12f111cabb5bcaf39d40dc80968ea5b1d66fc9b9d4e846a578034d3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3fa382a12f111cabb5bcaf39d40dc80968ea5b1d66fc9b9d4e846a578034d3c", kill_on_drop: false }`
[INFO] [stdout] f3fa382a12f111cabb5bcaf39d40dc80968ea5b1d66fc9b9d4e846a578034d3c