[INFO] fetching crate fui_core 0.1.0...
[INFO] checking fui_core-0.1.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate fui_core 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate fui_core 0.1.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6593707dc22da9bf86b9cb9721fa2873e8ff6d3dbf98aac7ae8e6e42808136f4
[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" "6593707dc22da9bf86b9cb9721fa2873e8ff6d3dbf98aac7ae8e6e42808136f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6593707dc22da9bf86b9cb9721fa2873e8ff6d3dbf98aac7ae8e6e42808136f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6593707dc22da9bf86b9cb9721fa2873e8ff6d3dbf98aac7ae8e6e42808136f4", kill_on_drop: false }`
[INFO] [stdout] 6593707dc22da9bf86b9cb9721fa2873e8ff6d3dbf98aac7ae8e6e42808136f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--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] 4ea1c555f94fd38b689610887545b7a0f9e789cd7eab9b207cce7a29e82fb3d1
[INFO] running `Command { std: "docker" "start" "-a" "4ea1c555f94fd38b689610887545b7a0f9e789cd7eab9b207cce7a29e82fb3d1", kill_on_drop: false }`
[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: 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: 2 warnings emitted
[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: 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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "4ea1c555f94fd38b689610887545b7a0f9e789cd7eab9b207cce7a29e82fb3d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ea1c555f94fd38b689610887545b7a0f9e789cd7eab9b207cce7a29e82fb3d1", kill_on_drop: false }`
[INFO] [stdout] 4ea1c555f94fd38b689610887545b7a0f9e789cd7eab9b207cce7a29e82fb3d1
