[INFO] cloning repository https://github.com/ur-fault/checkengine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ur-fault/checkengine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fur-fault%2Fcheckengine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fur-fault%2Fcheckengine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f96f2abe89db32af9117039c3f0bdfc6416d61aa
[INFO] building ur-fault/checkengine 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%2Fur-fault%2Fcheckengine" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ur-fault/checkengine 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/ur-fault/checkengine
[INFO] finished tweaking git repo https://github.com/ur-fault/checkengine
[INFO] tweaked toml for git repo https://github.com/ur-fault/checkengine written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ur-fault/checkengine 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 ordered-float v4.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9b84583626e6a46550496c262a684974a525ab0b38170af33ff7d95a3b5c0a70
[INFO] running `Command { std: "docker" "start" "-a" "9b84583626e6a46550496c262a684974a525ab0b38170af33ff7d95a3b5c0a70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b84583626e6a46550496c262a684974a525ab0b38170af33ff7d95a3b5c0a70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b84583626e6a46550496c262a684974a525ab0b38170af33ff7d95a3b5c0a70", kill_on_drop: false }`
[INFO] [stdout] 9b84583626e6a46550496c262a684974a525ab0b38170af33ff7d95a3b5c0a70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 63464f8992bc3c3284f380e95ca7ea4d724de810ed2812569c06edfa5985f056
[INFO] running `Command { std: "docker" "start" "-a" "63464f8992bc3c3284f380e95ca7ea4d724de810ed2812569c06edfa5985f056", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling rustix v0.38.21
[INFO] [stderr]    Compiling linux-raw-sys v0.4.10
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling is-terminal v0.4.9
[INFO] [stderr]    Compiling colored v2.0.4
[INFO] [stderr]    Compiling ordered-float v4.1.1
[INFO] [stderr]    Compiling checkengine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `occupied_by` and `with_move` are never used
[INFO] [stdout]    --> src/main.rs:363:8
[INFO] [stdout]     |
[INFO] [stdout] 333 | impl Board {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 363 |     fn occupied_by(&self, row: u8, col: u8) -> Option<Color> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 634 |     fn with_move<T>(&mut self, move_: Move, f: impl FnOnce(&mut Self) -> T) -> T {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "63464f8992bc3c3284f380e95ca7ea4d724de810ed2812569c06edfa5985f056", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63464f8992bc3c3284f380e95ca7ea4d724de810ed2812569c06edfa5985f056", kill_on_drop: false }`
[INFO] [stdout] 63464f8992bc3c3284f380e95ca7ea4d724de810ed2812569c06edfa5985f056
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 569f45792f31fb95a83e2fa9d14413a724caad5f09e43485cf79584d870dfd72
[INFO] running `Command { std: "docker" "start" "-a" "569f45792f31fb95a83e2fa9d14413a724caad5f09e43485cf79584d870dfd72", kill_on_drop: false }`
[INFO] [stderr]    Compiling checkengine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `occupied_by` and `with_move` are never used
[INFO] [stdout]    --> src/main.rs:363:8
[INFO] [stdout]     |
[INFO] [stdout] 333 | impl Board {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 363 |     fn occupied_by(&self, row: u8, col: u8) -> Option<Color> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 634 |     fn with_move<T>(&mut self, move_: Move, f: impl FnOnce(&mut Self) -> T) -> T {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "569f45792f31fb95a83e2fa9d14413a724caad5f09e43485cf79584d870dfd72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "569f45792f31fb95a83e2fa9d14413a724caad5f09e43485cf79584d870dfd72", kill_on_drop: false }`
[INFO] [stdout] 569f45792f31fb95a83e2fa9d14413a724caad5f09e43485cf79584d870dfd72