[INFO] fetching crate taffy 0.9.1...
[INFO] testing taffy-0.9.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate taffy 0.9.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate taffy 0.9.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate taffy 0.9.1
[INFO] tweaked toml for crates.io crate taffy 0.9.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate taffy 0.9.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate taffy 0.9.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.39
[INFO] [stderr]   Downloaded grid v0.18.0
[INFO] [stderr]   Downloaded document-features v0.2.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c6ed6ce7bfdbf0306161693f1a7b8d04fe6a0c6c43d42d82668270f541d1aac
[INFO] running `Command { std: "docker" "start" "-a" "6c6ed6ce7bfdbf0306161693f1a7b8d04fe6a0c6c43d42d82668270f541d1aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c6ed6ce7bfdbf0306161693f1a7b8d04fe6a0c6c43d42d82668270f541d1aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c6ed6ce7bfdbf0306161693f1a7b8d04fe6a0c6c43d42d82668270f541d1aac", kill_on_drop: false }`
[INFO] [stdout] 6c6ed6ce7bfdbf0306161693f1a7b8d04fe6a0c6c43d42d82668270f541d1aac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b19c013921a28ed96cace18ec93fc0b1ad8aff306db7223112b20f1112b98099
[INFO] running `Command { std: "docker" "start" "-a" "b19c013921a28ed96cace18ec93fc0b1ad8aff306db7223112b20f1112b98099", kill_on_drop: false }`
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]    Compiling grid v0.18.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling taffy v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.97s
[INFO] running `Command { std: "docker" "inspect" "b19c013921a28ed96cace18ec93fc0b1ad8aff306db7223112b20f1112b98099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b19c013921a28ed96cace18ec93fc0b1ad8aff306db7223112b20f1112b98099", kill_on_drop: false }`
[INFO] [stdout] b19c013921a28ed96cace18ec93fc0b1ad8aff306db7223112b20f1112b98099
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae822c75ef0a439cefd3c730bb8c3850acdf239ec1e969d40a2f6eeb3142bcb9
[INFO] running `Command { std: "docker" "start" "-a" "ae822c75ef0a439cefd3c730bb8c3850acdf239ec1e969d40a2f6eeb3142bcb9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling taffy v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `taffy` (example "custom_tree_vec")
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/bin/rustc --crate-name custom_tree_vec --edition=2021 examples/custom_tree_vec.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="block_layout"' --cfg 'feature="calc"' --cfg 'feature="content_size"' --cfg 'feature="default"' --cfg 'feature="detailed_layout_info"' --cfg 'feature="flexbox"' --cfg 'feature="grid"' --cfg 'feature="std"' --cfg 'feature="taffy_tree"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "block_layout", "calc", "content_size", "debug", "default", "detailed_layout_info", "document-features", "flexbox", "grid", "profile", "serde", "std", "strict_provenance", "taffy_tree"))' -C metadata=582d493f460a988d -C extra-filename=-82de559065432ae1 --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-1b252ee19ef31e11.rlib --extern grid=/opt/rustwide/target/debug/deps/libgrid-59aec2701980afec.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-64db6c9c2a13ec6a.rlib --extern slotmap=/opt/rustwide/target/debug/deps/libslotmap-7dd8cae5b2631117.rlib --extern taffy=/opt/rustwide/target/debug/deps/libtaffy-25b1832fd74885a6.rlib --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ae822c75ef0a439cefd3c730bb8c3850acdf239ec1e969d40a2f6eeb3142bcb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae822c75ef0a439cefd3c730bb8c3850acdf239ec1e969d40a2f6eeb3142bcb9", kill_on_drop: false }`
[INFO] [stdout] ae822c75ef0a439cefd3c730bb8c3850acdf239ec1e969d40a2f6eeb3142bcb9