[INFO] fetching crate rangoon 0.0.0...
[INFO] testing rangoon-0.0.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate rangoon 0.0.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate rangoon 0.0.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rangoon 0.0.0
[INFO] finished tweaking crates.io crate rangoon 0.0.0
[INFO] tweaked toml for crates.io crate rangoon 0.0.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded web v0.1.15
[INFO] [stderr]   Downloaded web_canvas v0.0.7
[INFO] [stderr]   Downloaded web_common v0.4.2
[INFO] [stderr]   Downloaded html_color v0.0.0
[INFO] [stderr]   Downloaded hecs v0.3.2
[INFO] [stderr]   Downloaded web-dom v0.3.9
[INFO] [stderr]   Downloaded class_names v0.0.1
[INFO] [stderr]   Downloaded web_timer v0.2.5
[INFO] [stderr]   Downloaded cstring v0.0.5
[INFO] [stderr]   Downloaded web_random v0.1.5
[INFO] [stderr]   Downloaded webcomponent v0.6.2
[INFO] [stderr]   Downloaded web_local_storage v0.0.2
[INFO] [stderr]   Downloaded callback v0.5.3
[INFO] [stderr]   Downloaded web_console v0.3.7
[INFO] [stderr]   Downloaded js v0.3.0
[INFO] [stderr]   Downloaded spin v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c3af3ff5aca8fdf1cb734066c4392f5b093d644ba67add45d5cc64e6b1f63cd9
[INFO] running `Command { std: "docker" "start" "-a" "c3af3ff5aca8fdf1cb734066c4392f5b093d644ba67add45d5cc64e6b1f63cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3af3ff5aca8fdf1cb734066c4392f5b093d644ba67add45d5cc64e6b1f63cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3af3ff5aca8fdf1cb734066c4392f5b093d644ba67add45d5cc64e6b1f63cd9", kill_on_drop: false }`
[INFO] [stdout] c3af3ff5aca8fdf1cb734066c4392f5b093d644ba67add45d5cc64e6b1f63cd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2ac5be59a8d3ac121137ee5c1353a5d4920908236c4926a8a2ebe48dde79eebd
[INFO] running `Command { std: "docker" "start" "-a" "2ac5be59a8d3ac121137ee5c1353a5d4920908236c4926a8a2ebe48dde79eebd", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]    Compiling spin v0.7.1
[INFO] [stderr]    Compiling class_names v0.0.1
[INFO] [stderr]    Compiling html_color v0.0.0
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling callback v0.5.3
[INFO] [stderr]    Compiling cstring v0.0.5
[INFO] [stderr]    Compiling hecs v0.3.2
[INFO] [stderr]    Compiling js v0.3.0
[INFO] [stderr]    Compiling web_common v0.4.2
[INFO] [stderr]    Compiling webcomponent v0.6.2
[INFO] [stderr]    Compiling web_timer v0.2.5
[INFO] [stderr]    Compiling web_local_storage v0.0.2
[INFO] [stderr]    Compiling web_canvas v0.0.7
[INFO] [stderr]    Compiling web_random v0.1.5
[INFO] [stderr]    Compiling web_console v0.3.7
[INFO] [stderr]    Compiling web-dom v0.3.9
[INFO] [stderr]    Compiling web v0.1.15
[INFO] [stderr]    Compiling rangoon v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:20:26
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let width: f64 = get_property(&screen, "width");
[INFO] [stdout]    |                    ---   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `f64`, found enum `Option`
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    expected due to this
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type `f64`
[INFO] [stdout]               found enum `Option<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let height: f64 = get_property(&screen, "height");
[INFO] [stdout]    |                     ---   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `f64`, found enum `Option`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     expected due to this
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type `f64`
[INFO] [stdout]               found enum `Option<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rangoon` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2ac5be59a8d3ac121137ee5c1353a5d4920908236c4926a8a2ebe48dde79eebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ac5be59a8d3ac121137ee5c1353a5d4920908236c4926a8a2ebe48dde79eebd", kill_on_drop: false }`
[INFO] [stdout] 2ac5be59a8d3ac121137ee5c1353a5d4920908236c4926a8a2ebe48dde79eebd