[INFO] fetching crate fui_core 0.1.0...
[INFO] checking fui_core-0.1.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate fui_core 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate fui_core 0.1.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fui_core 0.1.0
[INFO] finished tweaking crates.io crate fui_core 0.1.0
[INFO] tweaked toml for crates.io crate fui_core 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa8aeb5e18d23443fb811d2f78f13b434345c12ab7e3c9825ef829639407d331
[INFO] running `Command { std: "docker" "start" "-a" "fa8aeb5e18d23443fb811d2f78f13b434345c12ab7e3c9825ef829639407d331", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa8aeb5e18d23443fb811d2f78f13b434345c12ab7e3c9825ef829639407d331", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa8aeb5e18d23443fb811d2f78f13b434345c12ab7e3c9825ef829639407d331", kill_on_drop: false }`
[INFO] [stdout] fa8aeb5e18d23443fb811d2f78f13b434345c12ab7e3c9825ef829639407d331
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38209e11d8f77fe2dd517a2899465575d4fef1f1d503b91cfb7ef8beed51975f
[INFO] running `Command { std: "docker" "start" "-a" "38209e11d8f77fe2dd517a2899465575d4fef1f1d503b91cfb7ef8beed51975f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking clamped v1.0.0
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]     Checking euclid v0.21.0
[INFO] [stderr]     Checking freetype-rs v0.26.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling typed-builder v0.7.1
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking drawing v0.1.0
[INFO] [stderr]     Checking fui_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `source_changed_event_subscriptions`
[INFO] [stdout]    --> src/children_source.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 157 |     source_changed_event_subscriptions: Vec<EventSubscription>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `children_collection_changed_event_subscription`
[INFO] [stdout]   --> src/control/control_context.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     children_collection_changed_event_subscription: Option<EventSubscription>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/children_source.rs:198:16
[INFO] [stdout]     |
[INFO] [stdout] 198 |           panic!(format!(
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 199 | |             "index out of bounds: the len is {} but the index is {}",
[INFO] [stdout] 200 | |             self.len(),
[INFO] [stdout] 201 | |             index
[INFO] [stdout] 202 | |         ))
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 198 |         panic!(
[INFO] [stdout] 199 |             "index out of bounds: the len is {} but the index is {}",
[INFO] [stdout] 200 |             self.len(),
[INFO] [stdout] 201 |             index
[INFO] [stdout] 202 |         )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `source_changed_event_subscriptions`
[INFO] [stdout]    --> src/children_source.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 157 |     source_changed_event_subscriptions: Vec<EventSubscription>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `children_collection_changed_event_subscription`
[INFO] [stdout]   --> src/control/control_context.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     children_collection_changed_event_subscription: Option<EventSubscription>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/children_source.rs:198:16
[INFO] [stdout]     |
[INFO] [stdout] 198 |           panic!(format!(
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 199 | |             "index out of bounds: the len is {} but the index is {}",
[INFO] [stdout] 200 | |             self.len(),
[INFO] [stdout] 201 | |             index
[INFO] [stdout] 202 | |         ))
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 198 |         panic!(
[INFO] [stdout] 199 |             "index out of bounds: the len is {} but the index is {}",
[INFO] [stdout] 200 |             self.len(),
[INFO] [stdout] 201 |             index
[INFO] [stdout] 202 |         )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.37s
[INFO] running `Command { std: "docker" "inspect" "38209e11d8f77fe2dd517a2899465575d4fef1f1d503b91cfb7ef8beed51975f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38209e11d8f77fe2dd517a2899465575d4fef1f1d503b91cfb7ef8beed51975f", kill_on_drop: false }`
[INFO] [stdout] 38209e11d8f77fe2dd517a2899465575d4fef1f1d503b91cfb7ef8beed51975f