[INFO] fetching crate chessground 0.8.0...
[INFO] checking chessground-0.8.0 against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] extracting crate chessground 0.8.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate chessground 0.8.0 on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chessground 0.8.0
[INFO] finished tweaking crates.io crate chessground 0.8.0
[INFO] tweaked toml for crates.io crate chessground 0.8.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gio v0.4.1
[INFO] [stderr]   Downloaded pango v0.4.0
[INFO] [stderr]   Downloaded relm v0.14.6
[INFO] [stderr]   Downloaded gdk v0.8.0
[INFO] [stderr]   Downloaded cairo-rs v0.4.1
[INFO] [stderr]   Downloaded pango-sys v0.6.0
[INFO] [stderr]   Downloaded cairo-sys-rs v0.6.0
[INFO] [stderr]   Downloaded option-filter v1.0.2
[INFO] [stderr]   Downloaded gobject-sys v0.6.0
[INFO] [stderr]   Downloaded relm-gen-widget v0.14.6
[INFO] [stderr]   Downloaded glib-sys v0.6.0
[INFO] [stderr]   Downloaded atk-sys v0.6.0
[INFO] [stderr]   Downloaded c_vec v1.3.3
[INFO] [stderr]   Downloaded relm-derive-common v0.14.6
[INFO] [stderr]   Downloaded gdk-sys v0.6.0
[INFO] [stderr]   Downloaded gio-sys v0.6.0
[INFO] [stderr]   Downloaded relm-derive v0.14.6
[INFO] [stderr]   Downloaded relm-state v0.14.6
[INFO] [stderr]   Downloaded gtk-sys v0.6.0
[INFO] [stderr]   Downloaded gdk-pixbuf-sys v0.6.0
[INFO] [stderr]   Downloaded glib v0.5.0
[INFO] [stderr]   Downloaded btoi v0.3.0
[INFO] [stderr]   Downloaded relm-core v0.14.6
[INFO] [stderr]   Downloaded gtk v0.4.1
[INFO] [stderr]   Downloaded gdk-pixbuf v0.4.0
[INFO] [stderr]   Downloaded relm-attributes v0.14.6
[INFO] [stderr]   Downloaded rsvg-sys v0.6.0
[INFO] [stderr]   Downloaded rsvg v0.4.0
[INFO] [stderr]   Downloaded shakmaty v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be42767d9164342f4443a98b4a55d8717ecbae7c7026492066edfa386479dbcf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "be42767d9164342f4443a98b4a55d8717ecbae7c7026492066edfa386479dbcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be42767d9164342f4443a98b4a55d8717ecbae7c7026492066edfa386479dbcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be42767d9164342f4443a98b4a55d8717ecbae7c7026492066edfa386479dbcf", kill_on_drop: false }`
[INFO] [stdout] be42767d9164342f4443a98b4a55d8717ecbae7c7026492066edfa386479dbcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ccf9f1b0a52183dc1243521b0ff944306d7c74f64f68f5332d1bd4c49b99b1e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3ccf9f1b0a52183dc1243521b0ff944306d7c74f64f68f5332d1bd4c49b99b1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling gio v0.4.1
[INFO] [stderr]    Compiling cairo-rs v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling gdk-pixbuf v0.4.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking c_vec v1.3.3
[INFO] [stderr]    Compiling gdk v0.8.0
[INFO] [stderr]    Compiling gtk v0.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking option-filter v1.0.2
[INFO] [stderr]    Compiling glib-sys v0.6.0
[INFO] [stderr]    Compiling gobject-sys v0.6.0
[INFO] [stderr]    Compiling gio-sys v0.6.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.6.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.6.0
[INFO] [stderr]    Compiling pango-sys v0.6.0
[INFO] [stderr]    Compiling gdk-sys v0.6.0
[INFO] [stderr]    Compiling atk-sys v0.6.0
[INFO] [stderr]    Compiling gtk-sys v0.6.0
[INFO] [stderr]    Compiling rsvg-sys v0.6.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling shakmaty v0.8.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking btoi v0.3.0
[INFO] [stderr]     Checking glib v0.5.0
[INFO] [stderr]     Checking pango v0.4.0
[INFO] [stderr]    Compiling relm-gen-widget v0.14.6
[INFO] [stderr]    Compiling relm-derive-common v0.14.6
[INFO] [stderr]    Compiling relm-derive v0.14.6
[INFO] [stderr]    Compiling relm-attributes v0.14.6
[INFO] [stderr]     Checking rsvg v0.4.0
[INFO] [stderr]     Checking relm-core v0.14.6
[INFO] [stderr]     Checking relm-state v0.14.6
[INFO] [stderr]     Checking relm v0.14.6
[INFO] [stderr]     Checking chessground v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] 54 | pub enum GroundMsg {
[INFO] [stdout] 55 |     /// Flip the board.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 57 |     /// Set the board orientation.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 59 |     /// Set up a position configuration.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 61 |     /// Set up a board.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 64 |     /// Sent when the completed a piece drag or move.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 66 |     /// Sent when shapes are added, removed or cleared.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] 54 | pub enum GroundMsg {
[INFO] [stdout] 55 |     /// Flip the board.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 57 |     /// Set the board orientation.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 59 |     /// Set up a position configuration.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 61 |     /// Set up a board.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 64 |     /// Sent when the completed a piece drag or move.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 66 |     /// Sent when shapes are added, removed or cleared.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> examples/editor.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> examples/play.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` 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 1m 40s
[INFO] running `Command { std: "docker" "inspect" "3ccf9f1b0a52183dc1243521b0ff944306d7c74f64f68f5332d1bd4c49b99b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ccf9f1b0a52183dc1243521b0ff944306d7c74f64f68f5332d1bd4c49b99b1e", kill_on_drop: false }`
[INFO] [stdout] 3ccf9f1b0a52183dc1243521b0ff944306d7c74f64f68f5332d1bd4c49b99b1e