[INFO] fetching crate mdbook-chapter-zero 0.1.0...
[INFO] testing mdbook-chapter-zero-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate mdbook-chapter-zero 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate mdbook-chapter-zero 0.1.0
[INFO] finished tweaking crates.io crate mdbook-chapter-zero 0.1.0
[INFO] tweaked toml for crates.io crate mdbook-chapter-zero 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook-chapter-zero 0.1.0 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] crate crates.io crate mdbook-chapter-zero 0.1.0 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" "+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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 925b794ae0a479c3539b8bfacb163a4517d8c54b4d396fc1f4a8b9e99124265a
[INFO] running `Command { std: "docker" "start" "-a" "925b794ae0a479c3539b8bfacb163a4517d8c54b4d396fc1f4a8b9e99124265a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "925b794ae0a479c3539b8bfacb163a4517d8c54b4d396fc1f4a8b9e99124265a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "925b794ae0a479c3539b8bfacb163a4517d8c54b4d396fc1f4a8b9e99124265a", kill_on_drop: false }`
[INFO] [stdout] 925b794ae0a479c3539b8bfacb163a4517d8c54b4d396fc1f4a8b9e99124265a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c00b9eff69be8f58ba61d3d4087a673fab45c92b442cd641b82ffd09d466a513
[INFO] running `Command { std: "docker" "start" "-a" "c00b9eff69be8f58ba61d3d4087a673fab45c92b442cd641b82ffd09d466a513", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling anstream v0.6.13
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]    Compiling strsim v0.11.0
[INFO] [stderr]    Compiling clap_lex v0.7.0
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling pulldown-cmark v0.10.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.10.0
[INFO] [stderr]    Compiling fastrand v2.0.1
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling topological-sort v0.2.2
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling chrono v0.4.35
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling terminal_size v0.3.0
[INFO] [stderr]    Compiling clap_builder v4.5.2
[INFO] [stderr]    Compiling tempfile v3.10.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling pest v2.7.8
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]    Compiling bstr v1.9.1
[INFO] [stderr]    Compiling pest_meta v2.7.8
[INFO] [stderr]    Compiling env_filter v0.1.0
[INFO] [stderr]    Compiling clap v4.5.3
[INFO] [stderr]    Compiling clap_complete v4.5.1
[INFO] [stderr]    Compiling env_logger v0.11.3
[INFO] [stderr]    Compiling opener v0.6.1
[INFO] [stderr]    Compiling pest_generator v2.7.8
[INFO] [stderr]    Compiling pest_derive v2.7.8
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling handlebars v5.1.0
[INFO] [stderr]    Compiling mdbook v0.4.37
[INFO] [stderr]    Compiling mdbook-chapter-zero v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `Command { std: "docker" "inspect" "c00b9eff69be8f58ba61d3d4087a673fab45c92b442cd641b82ffd09d466a513", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c00b9eff69be8f58ba61d3d4087a673fab45c92b442cd641b82ffd09d466a513", kill_on_drop: false }`
[INFO] [stdout] c00b9eff69be8f58ba61d3d4087a673fab45c92b442cd641b82ffd09d466a513
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 1237eda55fb00623b014aab7ee203fa4fa89f33d4b8fa1148268e06414dd6c58
[INFO] running `Command { std: "docker" "start" "-a" "1237eda55fb00623b014aab7ee203fa4fa89f33d4b8fa1148268e06414dd6c58", kill_on_drop: false }`
[INFO] [stderr]    Compiling mdbook-chapter-zero v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "1237eda55fb00623b014aab7ee203fa4fa89f33d4b8fa1148268e06414dd6c58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1237eda55fb00623b014aab7ee203fa4fa89f33d4b8fa1148268e06414dd6c58", kill_on_drop: false }`
[INFO] [stdout] 1237eda55fb00623b014aab7ee203fa4fa89f33d4b8fa1148268e06414dd6c58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] b0dd0878127a34f8c1d65c203019d2b5def9f61d0855f19587ec0dbf20975d57
[INFO] running `Command { std: "docker" "start" "-a" "b0dd0878127a34f8c1d65c203019d2b5def9f61d0855f19587ec0dbf20975d57", kill_on_drop: false }`
[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] [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]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mdbook_chapter_zero-32e6f446cce0d04a)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mdbook_chapter_zero-6ee2c0ebfc21ce77)
[INFO] [stderr]    Doc-tests mdbook_chapter_zero
[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" "b0dd0878127a34f8c1d65c203019d2b5def9f61d0855f19587ec0dbf20975d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0dd0878127a34f8c1d65c203019d2b5def9f61d0855f19587ec0dbf20975d57", kill_on_drop: false }`
[INFO] [stdout] b0dd0878127a34f8c1d65c203019d2b5def9f61d0855f19587ec0dbf20975d57