[INFO] fetching crate weblab-assignment-structure 0.3.4...
[INFO] testing weblab-assignment-structure-0.3.4 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate weblab-assignment-structure 0.3.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate weblab-assignment-structure 0.3.4
[INFO] finished tweaking crates.io crate weblab-assignment-structure 0.3.4
[INFO] tweaked toml for crates.io crate weblab-assignment-structure 0.3.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate weblab-assignment-structure 0.3.4 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-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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6f96c2899e2273d80489a23b80c59500877db584cba4fb2af367be761f9c607
[INFO] running `Command { std: "docker" "start" "-a" "d6f96c2899e2273d80489a23b80c59500877db584cba4fb2af367be761f9c607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6f96c2899e2273d80489a23b80c59500877db584cba4fb2af367be761f9c607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6f96c2899e2273d80489a23b80c59500877db584cba4fb2af367be761f9c607", kill_on_drop: false }`
[INFO] [stdout] d6f96c2899e2273d80489a23b80c59500877db584cba4fb2af367be761f9c607
[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=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] 8375c8e144e5f59bc75893e4632f8c485bf93ef2561f9bdc3188300bb1c46592
[INFO] running `Command { std: "docker" "start" "-a" "8375c8e144e5f59bc75893e4632f8c485bf93ef2561f9bdc3188300bb1c46592", kill_on_drop: false }`
[INFO] [stderr]    Compiling weblab-assignment-structure v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "8375c8e144e5f59bc75893e4632f8c485bf93ef2561f9bdc3188300bb1c46592", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8375c8e144e5f59bc75893e4632f8c485bf93ef2561f9bdc3188300bb1c46592", kill_on_drop: false }`
[INFO] [stdout] 8375c8e144e5f59bc75893e4632f8c485bf93ef2561f9bdc3188300bb1c46592
[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=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] be0117f007a213ec1947670c754d639fcb2bdb3c3c6c6bf768756e351e0698e8
[INFO] running `Command { std: "docker" "start" "-a" "be0117f007a213ec1947670c754d639fcb2bdb3c3c6c6bf768756e351e0698e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling weblab-assignment-structure v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "be0117f007a213ec1947670c754d639fcb2bdb3c3c6c6bf768756e351e0698e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be0117f007a213ec1947670c754d639fcb2bdb3c3c6c6bf768756e351e0698e8", kill_on_drop: false }`
[INFO] [stdout] be0117f007a213ec1947670c754d639fcb2bdb3c3c6c6bf768756e351e0698e8
[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=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] 1e1ab3d27fbbfa38a6ed709dabfa391d3efead92760c952d6702d7b5fcb26cea
[INFO] running `Command { std: "docker" "start" "-a" "1e1ab3d27fbbfa38a6ed709dabfa391d3efead92760c952d6702d7b5fcb26cea", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/weblab_assignment_structure-8884af83d3528d4e)
[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 weblab_assignment_structure
[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" "1e1ab3d27fbbfa38a6ed709dabfa391d3efead92760c952d6702d7b5fcb26cea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e1ab3d27fbbfa38a6ed709dabfa391d3efead92760c952d6702d7b5fcb26cea", kill_on_drop: false }`
[INFO] [stdout] 1e1ab3d27fbbfa38a6ed709dabfa391d3efead92760c952d6702d7b5fcb26cea