[INFO] fetching crate zu 0.3.3...
[INFO] building zu-0.3.3 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate zu 0.3.3 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate zu 0.3.3
[INFO] finished tweaking crates.io crate zu 0.3.3
[INFO] tweaked toml for crates.io crate zu 0.3.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zu 0.3.3 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 148 packages to latest compatible versions
[INFO] [stderr]       Adding rsass v0.28.10 (available: v0.29.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16be1e686436c22bdf71197b8765fddef01972f90584435db46ceb955b92440e
[INFO] running `Command { std: "docker" "start" "-a" "16be1e686436c22bdf71197b8765fddef01972f90584435db46ceb955b92440e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16be1e686436c22bdf71197b8765fddef01972f90584435db46ceb955b92440e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16be1e686436c22bdf71197b8765fddef01972f90584435db46ceb955b92440e", kill_on_drop: false }`
[INFO] [stdout] 16be1e686436c22bdf71197b8765fddef01972f90584435db46ceb955b92440e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc64110e65412180074d1c84974ccae7e172166eddd809d61ecf15bb8d927857
[INFO] running `Command { std: "docker" "start" "-a" "dc64110e65412180074d1c84974ccae7e172166eddd809d61ecf15bb8d927857", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.104
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling implicit-clone-derive v0.1.2
[INFO] [stderr]    Compiling implicit-clone v0.4.9
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling pin-project v1.1.10
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling yew-macro v0.21.0
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling float-cmp v0.10.0
[INFO] [stderr]    Compiling roxmltree v0.20.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling arc-swap v1.7.1
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.104
[INFO] [stderr]    Compiling inflections v1.1.1
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.104
[INFO] [stderr]    Compiling rsass v0.28.10
[INFO] [stderr]    Compiling gloo-worker-macros v0.1.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.104
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling pinned v0.1.0
[INFO] [stderr]    Compiling prokio v0.1.0
[INFO] [stderr]    Compiling js-sys v0.3.81
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling stylist-core v0.13.0
[INFO] [stderr]    Compiling web-sys v0.3.81
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.54
[INFO] [stderr]    Compiling serde-wasm-bindgen v0.6.5
[INFO] [stderr]    Compiling gloo-timers v0.3.0
[INFO] [stderr]    Compiling gloo-utils v0.2.0
[INFO] [stderr]    Compiling gloo-events v0.2.0
[INFO] [stderr]    Compiling gloo-render v0.2.0
[INFO] [stderr]    Compiling gloo-console v0.3.0
[INFO] [stderr]    Compiling gloo-storage v0.3.0
[INFO] [stderr]    Compiling gloo-dialogs v0.2.0
[INFO] [stderr]    Compiling gloo-net v0.4.0
[INFO] [stderr]    Compiling gloo-worker v0.4.0
[INFO] [stderr]    Compiling gloo-history v0.2.2
[INFO] [stderr]    Compiling gloo-file v0.3.0
[INFO] [stderr]    Compiling gloo v0.10.0
[INFO] [stderr]    Compiling yew v0.21.0
[INFO] [stderr]    Compiling gloo-worker v0.5.0
[INFO] [stderr]    Compiling gloo-net v0.5.0
[INFO] [stderr]    Compiling gloo v0.11.0
[INFO] [stderr]    Compiling yew-hooks v0.3.4
[INFO] [stderr]    Compiling zu-util v0.3.5
[INFO] [stderr]    Compiling zu v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling stylist v0.13.0
[INFO] [stdout] error: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/button_base/button_type.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     warnings,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_attributes)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zu` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "dc64110e65412180074d1c84974ccae7e172166eddd809d61ecf15bb8d927857", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc64110e65412180074d1c84974ccae7e172166eddd809d61ecf15bb8d927857", kill_on_drop: false }`
[INFO] [stdout] dc64110e65412180074d1c84974ccae7e172166eddd809d61ecf15bb8d927857