[INFO] fetching crate frui_core 0.0.1...
[INFO] checking frui_core-0.0.1 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate frui_core 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate frui_core 0.0.1
[INFO] finished tweaking crates.io crate frui_core 0.0.1
[INFO] tweaked toml for crates.io crate frui_core 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate frui_core 0.0.1 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 154 packages to latest compatible versions
[INFO] [stderr]       Adding druid-shell v0.7.0 (available: v0.8.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b88a7e8b2db87b6fe2d8a767e27d7e7b750557aedb92ee354e1b0bf605038686
[INFO] running `Command { std: "docker" "start" "-a" "b88a7e8b2db87b6fe2d8a767e27d7e7b750557aedb92ee354e1b0bf605038686", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b88a7e8b2db87b6fe2d8a767e27d7e7b750557aedb92ee354e1b0bf605038686", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b88a7e8b2db87b6fe2d8a767e27d7e7b750557aedb92ee354e1b0bf605038686", kill_on_drop: false }`
[INFO] [stdout] b88a7e8b2db87b6fe2d8a767e27d7e7b750557aedb92ee354e1b0bf605038686
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7be6ac120d14ff1e65c85dfda10db06a9121616f0ab28ce08a28df71f52073e1
[INFO] running `Command { std: "docker" "start" "-a" "7be6ac120d14ff1e65c85dfda10db06a9121616f0ab28ce08a28df71f52073e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
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[INFO] [stderr]    Compiling frui_macros v0.0.1
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[INFO] [stderr]    Compiling pango-sys v0.10.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.10.0
[INFO] [stderr]    Compiling atk-sys v0.10.0
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[INFO] [stderr]     Checking futures-executor v0.3.31
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[INFO] [stderr]     Checking frui_core v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0367]: `!Immutable` impl requires `T: Sized` but the struct it is implemented for does not
[INFO] [stdout]   --> src/api/widget_eq/cheap_eq.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> !Immutable for UnsafeCell<T> {}
[INFO] [stdout]    |      ^
[INFO] [stdout]    |
[INFO] [stdout] note: the implementor must specify the same requirement
[INFO] [stdout]   --> /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/core/src/cell.rs:2093:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0367]: `!Immutable` impl requires `T: Sized` but the struct it is implemented for does not
[INFO] [stdout]   --> src/api/widget_eq/cheap_eq.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> !Immutable for UnsafeCell<T> {}
[INFO] [stdout]    |      ^
[INFO] [stdout]    |
[INFO] [stdout] note: the implementor must specify the same requirement
[INFO] [stdout]   --> /rustc/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/library/core/src/cell.rs:2093:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0367`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `frui_core` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0367`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `frui_core` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7be6ac120d14ff1e65c85dfda10db06a9121616f0ab28ce08a28df71f52073e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7be6ac120d14ff1e65c85dfda10db06a9121616f0ab28ce08a28df71f52073e1", kill_on_drop: false }`
[INFO] [stdout] 7be6ac120d14ff1e65c85dfda10db06a9121616f0ab28ce08a28df71f52073e1