[INFO] fetching crate candelabre-windowing 0.2.1...
[INFO] checking candelabre-windowing-0.2.1 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate candelabre-windowing 0.2.1 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate candelabre-windowing 0.2.1 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-43/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd4c202eca8582ff554c424708cc2653a9d9e74e9b802b68a0f0174e5af596e8
[INFO] running `Command { std: "docker" "start" "-a" "cd4c202eca8582ff554c424708cc2653a9d9e74e9b802b68a0f0174e5af596e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd4c202eca8582ff554c424708cc2653a9d9e74e9b802b68a0f0174e5af596e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd4c202eca8582ff554c424708cc2653a9d9e74e9b802b68a0f0174e5af596e8", kill_on_drop: false }`
[INFO] [stdout] cd4c202eca8582ff554c424708cc2653a9d9e74e9b802b68a0f0174e5af596e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1282c81d3596df9029db4fcd785fdc09dcd4d0f8ad725bd820c36703b57780cf
[INFO] running `Command { std: "docker" "start" "-a" "1282c81d3596df9029db4fcd785fdc09dcd4d0f8ad725bd820c36703b57780cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling khronos_api v3.1.0
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[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling cc v1.0.72
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[INFO] [stderr]     Checking raw-window-handle v0.3.3
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[INFO] [stderr]    Compiling x11-dl v2.19.1
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[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
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[INFO] [stderr]     Checking rusttype v0.7.9
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[INFO] [stderr]     Checking calloop v0.4.4
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[INFO] [stderr]     Checking glutin v0.24.1
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.86s
[INFO] running `Command { std: "docker" "inspect" "1282c81d3596df9029db4fcd785fdc09dcd4d0f8ad725bd820c36703b57780cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1282c81d3596df9029db4fcd785fdc09dcd4d0f8ad725bd820c36703b57780cf", kill_on_drop: false }`
[INFO] [stdout] 1282c81d3596df9029db4fcd785fdc09dcd4d0f8ad725bd820c36703b57780cf