[INFO] fetching crate fwm 0.1.0...
[INFO] testing fwm-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate fwm 0.1.0 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate fwm 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fwm 0.1.0
[INFO] finished tweaking crates.io crate fwm 0.1.0
[INFO] tweaked toml for crates.io crate fwm 0.1.0 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate crates.io crate fwm 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 452585e61103356c3f29e6571ade30197f9dca5d9dd351f2cf8dedf8a142e8de
[INFO] running `Command { std: "docker" "start" "-a" "452585e61103356c3f29e6571ade30197f9dca5d9dd351f2cf8dedf8a142e8de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "452585e61103356c3f29e6571ade30197f9dca5d9dd351f2cf8dedf8a142e8de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "452585e61103356c3f29e6571ade30197f9dca5d9dd351f2cf8dedf8a142e8de", kill_on_drop: false }`
[INFO] [stdout] 452585e61103356c3f29e6571ade30197f9dca5d9dd351f2cf8dedf8a142e8de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 310edc314c0588b0778cc7b906e30fab0501f8b497267e916dde3241a9acd950
[INFO] running `Command { std: "docker" "start" "-a" "310edc314c0588b0778cc7b906e30fab0501f8b497267e916dde3241a9acd950", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.68
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-core v0.3.14
[INFO] [stderr]    Compiling futures-sink v0.3.14
[INFO] [stderr]    Compiling futures-io v0.3.14
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling futures-task v0.3.14
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling gio v0.9.1
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling cairo-rs v0.9.1
[INFO] [stderr]    Compiling pango v0.9.1
[INFO] [stderr]    Compiling gdk-pixbuf v0.9.0
[INFO] [stderr]    Compiling atk v0.9.0
[INFO] [stderr]    Compiling gdk v0.13.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling gtk v0.9.2
[INFO] [stderr]    Compiling futures-channel v0.3.14
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling futures-util v0.3.14
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling futures-executor v0.3.14
[INFO] [stderr]    Compiling futures v0.3.14
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling system-deps v1.3.2
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling glib-sys v0.10.1
[INFO] [stderr]    Compiling gobject-sys v0.10.0
[INFO] [stderr]    Compiling gio-sys v0.10.1
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.10.0
[INFO] [stderr]    Compiling pango-sys v0.10.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.10.0
[INFO] [stderr]    Compiling glib-macros v0.10.1
[INFO] [stderr]    Compiling atk-sys v0.10.0
[INFO] [stderr]    Compiling gdk-sys v0.10.0
[INFO] [stderr]    Compiling gtk-sys v0.10.0
[INFO] [stderr]    Compiling glib v0.10.3
[INFO] [stderr]    Compiling fwm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/lib.rs:602:31
[INFO] [stdout]     |
[INFO] [stdout] 602 |         let move_horizontal = (dir == Direction::Left || dir == Direction::Right);
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/lib.rs:603:29
[INFO] [stdout]     |
[INFO] [stdout] 603 |         let move_to_first = (dir == Direction::Right || dir == Direction::Down);
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w_idx`
[INFO] [stdout]    --> src/lib.rs:641:29
[INFO] [stdout]     |
[INFO] [stdout] 641 |             ItemIdx::Window(w_idx) => {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_w_idx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `n_children`
[INFO] [stdout]    --> src/lib.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 |     fn n_children(&self, item: ItemIdx) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gtk`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name gtk /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gtk-0.9.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="v3_16"' -C metadata=f4df688ad54433fd -C extra-filename=-f4df688ad54433fd --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern atk=/opt/rustwide/target/debug/deps/libatk-f43ec3670817940d.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-e09638bf9aca31b4.rmeta --extern cairo=/opt/rustwide/target/debug/deps/libcairo-7beb46dd13d147a8.rmeta --extern cairo_sys=/opt/rustwide/target/debug/deps/libcairo_sys-d755c6c9c4d403b9.rmeta --extern gdk=/opt/rustwide/target/debug/deps/libgdk-10106a56151c60a7.rmeta --extern gdk_pixbuf=/opt/rustwide/target/debug/deps/libgdk_pixbuf-88329f156142b0b2.rmeta --extern gdk_pixbuf_sys=/opt/rustwide/target/debug/deps/libgdk_pixbuf_sys-8cd9af80ba7a7327.rmeta --extern gdk_sys=/opt/rustwide/target/debug/deps/libgdk_sys-f779a7b311e6d295.rmeta --extern gio=/opt/rustwide/target/debug/deps/libgio-cf33138abd944cba.rmeta --extern gio_sys=/opt/rustwide/target/debug/deps/libgio_sys-e4213695d2689af3.rmeta --extern glib=/opt/rustwide/target/debug/deps/libglib-64f26772c0328d21.rmeta --extern glib_sys=/opt/rustwide/target/debug/deps/libglib_sys-99e552971b0c2736.rmeta --extern gobject_sys=/opt/rustwide/target/debug/deps/libgobject_sys-3cc0761abb401caf.rmeta --extern gtk_sys=/opt/rustwide/target/debug/deps/libgtk_sys-38f3190649297153.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-123c6084fceb54b0.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-f3ab2a2ff8e863a7.rmeta --extern pango=/opt/rustwide/target/debug/deps/libpango-7558706007b38211.rmeta --extern pango_sys=/opt/rustwide/target/debug/deps/libpango_sys-c10ac9010e92483c.rmeta --cap-lints allow --cap-lints=warn --cfg 'gdk_backend="x11"' --cfg 'gdk_backend="broadway"' --cfg 'gdk_backend="wayland"'` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "310edc314c0588b0778cc7b906e30fab0501f8b497267e916dde3241a9acd950", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "310edc314c0588b0778cc7b906e30fab0501f8b497267e916dde3241a9acd950", kill_on_drop: false }`
[INFO] [stdout] 310edc314c0588b0778cc7b906e30fab0501f8b497267e916dde3241a9acd950
