[INFO] fetching crate candelabre-windowing 0.2.1...
[INFO] checking candelabre-windowing-0.2.1 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate candelabre-windowing 0.2.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate candelabre-windowing 0.2.1 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate candelabre-windowing 0.2.1
[INFO] finished tweaking crates.io crate candelabre-windowing 0.2.1
[INFO] tweaked toml for crates.io crate candelabre-windowing 0.2.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fd8f876dd6c17c52dc0f828dada5b50d801973d0c6793b1f6b7de6c2e6bec35
[INFO] running `Command { std: "docker" "start" "-a" "0fd8f876dd6c17c52dc0f828dada5b50d801973d0c6793b1f6b7de6c2e6bec35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fd8f876dd6c17c52dc0f828dada5b50d801973d0c6793b1f6b7de6c2e6bec35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fd8f876dd6c17c52dc0f828dada5b50d801973d0c6793b1f6b7de6c2e6bec35", kill_on_drop: false }`
[INFO] [stdout] 0fd8f876dd6c17c52dc0f828dada5b50d801973d0c6793b1f6b7de6c2e6bec35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e09d11ab0680670a17493e838e14b5901a688d5222744a95e2b72eb178ae0c24
[INFO] running `Command { std: "docker" "start" "-a" "e09d11ab0680670a17493e838e14b5901a688d5222744a95e2b72eb178ae0c24", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.99
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[INFO] [stderr]     Checking candelabre-windowing v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> tests/integration_test.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 | /         &win_manager.create_window::<_, FakeSurface>(
[INFO] [stdout] 108 | |             &el,
[INFO] [stdout] 109 | |             el.primary_monitor().video_modes().next().unwrap(),
[INFO] [stdout] 110 | |             CandlDimension::Classic(800, 400),
[INFO] [stdout] 111 | |             &format!("test candelabre multi window: #{}", win_idx+1),
[INFO] [stdout] 112 | |             CandlOptions::default()
[INFO] [stdout] 113 | |         ).unwrap();
[INFO] [stdout]     | |__________________^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let _ = &win_manager.create_window::<_, FakeSurface>(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.93s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e09d11ab0680670a17493e838e14b5901a688d5222744a95e2b72eb178ae0c24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e09d11ab0680670a17493e838e14b5901a688d5222744a95e2b72eb178ae0c24", kill_on_drop: false }`
[INFO] [stdout] e09d11ab0680670a17493e838e14b5901a688d5222744a95e2b72eb178ae0c24