[INFO] fetching crate waystone 0.1.0...
[INFO] testing waystone-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate waystone 0.1.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate waystone 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate waystone 0.1.0
[INFO] finished tweaking crates.io crate waystone 0.1.0
[INFO] tweaked toml for crates.io crate waystone 0.1.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate waystone 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dff9bb27b96a08e4b0be048a077967c635dd156d3472a178b87f65db301a6e94
[INFO] running `Command { std: "docker" "start" "-a" "dff9bb27b96a08e4b0be048a077967c635dd156d3472a178b87f65db301a6e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dff9bb27b96a08e4b0be048a077967c635dd156d3472a178b87f65db301a6e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dff9bb27b96a08e4b0be048a077967c635dd156d3472a178b87f65db301a6e94", kill_on_drop: false }`
[INFO] [stdout] dff9bb27b96a08e4b0be048a077967c635dd156d3472a178b87f65db301a6e94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adb607aab174380219ebcd44feb922ba79eb5c5a5f6908914625373aaf2d625e
[INFO] running `Command { std: "docker" "start" "-a" "adb607aab174380219ebcd44feb922ba79eb5c5a5f6908914625373aaf2d625e", kill_on_drop: false }`
[INFO] [stderr]    Compiling waystone-client v0.1.0
[INFO] [stderr]    Compiling waystone v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `display`
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let display = Display::connect().unwrap();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_display`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "adb607aab174380219ebcd44feb922ba79eb5c5a5f6908914625373aaf2d625e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adb607aab174380219ebcd44feb922ba79eb5c5a5f6908914625373aaf2d625e", kill_on_drop: false }`
[INFO] [stdout] adb607aab174380219ebcd44feb922ba79eb5c5a5f6908914625373aaf2d625e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f471e9d6b6e5776facf1f233a3a5cfebfb57817169f7b02958799c87d53f2789
[INFO] running `Command { std: "docker" "start" "-a" "f471e9d6b6e5776facf1f233a3a5cfebfb57817169f7b02958799c87d53f2789", kill_on_drop: false }`
[INFO] [stderr]    Compiling waystone v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `display`
[INFO] [stdout]  --> src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let display = Display::connect().unwrap();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_display`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "f471e9d6b6e5776facf1f233a3a5cfebfb57817169f7b02958799c87d53f2789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f471e9d6b6e5776facf1f233a3a5cfebfb57817169f7b02958799c87d53f2789", kill_on_drop: false }`
[INFO] [stdout] f471e9d6b6e5776facf1f233a3a5cfebfb57817169f7b02958799c87d53f2789
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e37a3173d2c4c71981a3b04644277f8aca26e00699bd8f2e4bb3f8e2f2015e4c
[INFO] running `Command { std: "docker" "start" "-a" "e37a3173d2c4c71981a3b04644277f8aca26e00699bd8f2e4bb3f8e2f2015e4c", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `display`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 4 |     let display = Display::connect().unwrap();
[INFO] [stdout] 
[INFO] [stderr]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_display`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `waystone` (bin "waystone" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/waystone-6b4f64bbb9cda7d7)
[INFO] running `Command { std: "docker" "inspect" "e37a3173d2c4c71981a3b04644277f8aca26e00699bd8f2e4bb3f8e2f2015e4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e37a3173d2c4c71981a3b04644277f8aca26e00699bd8f2e4bb3f8e2f2015e4c", kill_on_drop: false }`
[INFO] [stdout] e37a3173d2c4c71981a3b04644277f8aca26e00699bd8f2e4bb3f8e2f2015e4c