[INFO] fetching crate dust-engine 0.2.0...
[INFO] testing dust-engine-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate dust-engine 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate dust-engine 0.2.0
[INFO] finished tweaking crates.io crate dust-engine 0.2.0
[INFO] tweaked toml for crates.io crate dust-engine 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dust-engine 0.2.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0125b3bc6493758486c055d90908c385fbd15b0bc5a1937250c45ad38ceb91ee
[INFO] running `Command { std: "docker" "start" "-a" "0125b3bc6493758486c055d90908c385fbd15b0bc5a1937250c45ad38ceb91ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0125b3bc6493758486c055d90908c385fbd15b0bc5a1937250c45ad38ceb91ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0125b3bc6493758486c055d90908c385fbd15b0bc5a1937250c45ad38ceb91ee", kill_on_drop: false }`
[INFO] [stdout] 0125b3bc6493758486c055d90908c385fbd15b0bc5a1937250c45ad38ceb91ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 371f77bb5b62bd4043de42120c4416f50336028ed032900a1329e206a361fe18
[INFO] running `Command { std: "docker" "start" "-a" "371f77bb5b62bd4043de42120c4416f50336028ed032900a1329e206a361fe18", kill_on_drop: false }`
[INFO] [stderr]    Compiling dust-engine v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "371f77bb5b62bd4043de42120c4416f50336028ed032900a1329e206a361fe18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "371f77bb5b62bd4043de42120c4416f50336028ed032900a1329e206a361fe18", kill_on_drop: false }`
[INFO] [stdout] 371f77bb5b62bd4043de42120c4416f50336028ed032900a1329e206a361fe18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b9e1edb10cc81f0b615afc148398e0393ec692f8d0bf3895ee24789776df861
[INFO] running `Command { std: "docker" "start" "-a" "5b9e1edb10cc81f0b615afc148398e0393ec692f8d0bf3895ee24789776df861", kill_on_drop: false }`
[INFO] [stderr]    Compiling dust-engine v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "5b9e1edb10cc81f0b615afc148398e0393ec692f8d0bf3895ee24789776df861", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b9e1edb10cc81f0b615afc148398e0393ec692f8d0bf3895ee24789776df861", kill_on_drop: false }`
[INFO] [stdout] 5b9e1edb10cc81f0b615afc148398e0393ec692f8d0bf3895ee24789776df861
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a1d29dfc3b22dd41558f1c90d3a41c16d43e01f0f2a8d83f00189e7dc9b48ad8
[INFO] running `Command { std: "docker" "start" "-a" "a1d29dfc3b22dd41558f1c90d3a41c16d43e01f0f2a8d83f00189e7dc9b48ad8", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/dust_engine-c50504abbf1926c4)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dust_engine
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a1d29dfc3b22dd41558f1c90d3a41c16d43e01f0f2a8d83f00189e7dc9b48ad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1d29dfc3b22dd41558f1c90d3a41c16d43e01f0f2a8d83f00189e7dc9b48ad8", kill_on_drop: false }`
[INFO] [stdout] a1d29dfc3b22dd41558f1c90d3a41c16d43e01f0f2a8d83f00189e7dc9b48ad8