[INFO] fetching crate algebra 0.2.0...
[INFO] documenting algebra-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate algebra 0.2.0 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate algebra 0.2.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate algebra 0.2.0
[INFO] finished tweaking crates.io crate algebra 0.2.0
[INFO] tweaked toml for crates.io crate algebra 0.2.0 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck v0.3.2
[INFO] [stderr]   Downloaded quickcheck_macros v0.2.29
[INFO] [stderr]   Downloaded quickcheck v0.2.27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cefe33f06b1f9482c269edb784a09be6388d7a25657518d4685c3b0400f62ab
[INFO] running `Command { std: "docker" "start" "-a" "0cefe33f06b1f9482c269edb784a09be6388d7a25657518d4685c3b0400f62ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cefe33f06b1f9482c269edb784a09be6388d7a25657518d4685c3b0400f62ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cefe33f06b1f9482c269edb784a09be6388d7a25657518d4685c3b0400f62ab", kill_on_drop: false }`
[INFO] [stdout] 0cefe33f06b1f9482c269edb784a09be6388d7a25657518d4685c3b0400f62ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 612f36666b1052d623dccf0896055f2987de5f76b943f5629cabe1027c0863a3
[INFO] running `Command { std: "docker" "start" "-a" "612f36666b1052d623dccf0896055f2987de5f76b943f5629cabe1027c0863a3", kill_on_drop: false }`
[INFO] [stderr]  Documenting algebra v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:106:11
[INFO] [stdout]     |
[INFO] [stdout] 106 |   //! -      `Closure`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 107 | | //! -        `Magma`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::invalid_rust_codeblocks)]` on by default
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:107:11
[INFO] [stdout]     |
[INFO] [stdout] 107 |   //! -        `Magma`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 108 | | //! -   `Quasigroup`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:109:11
[INFO] [stdout]     |
[INFO] [stdout] 109 |   //! -         `Loop`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 110 | | //! -    `Semigroup`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:111:11
[INFO] [stdout]     |
[INFO] [stdout] 111 |   //! -       `Monoid`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 112 | | //! -        `Group`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:112:11
[INFO] [stdout]     |
[INFO] [stdout] 112 |   //! -        `Group`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 113 | | //! - `AbelianGroup`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:138:11
[INFO] [stdout]     |
[INFO] [stdout] 138 |   //! -            `Ring`(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 139 | | //! - `RingCommutative`(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:140:11
[INFO] [stdout]     |
[INFO] [stdout] 140 | //! -           `Field`(`Approx`)?
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "612f36666b1052d623dccf0896055f2987de5f76b943f5629cabe1027c0863a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "612f36666b1052d623dccf0896055f2987de5f76b943f5629cabe1027c0863a3", kill_on_drop: false }`
[INFO] [stdout] 612f36666b1052d623dccf0896055f2987de5f76b943f5629cabe1027c0863a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 800b4c13736320d5db5ff5fa26311d55607fb3a5a612ef0b3bf21c9232451668
[INFO] running `Command { std: "docker" "start" "-a" "800b4c13736320d5db5ff5fa26311d55607fb3a5a612ef0b3bf21c9232451668", kill_on_drop: false }`
[INFO] [stderr]  Documenting algebra v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:106:11
[INFO] [stdout]     |
[INFO] [stdout] 106 |   //! -      `Closure`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 107 | | //! -        `Magma`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::invalid_rust_codeblocks)]` on by default
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:107:11
[INFO] [stdout]     |
[INFO] [stdout] 107 |   //! -        `Magma`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 108 | | //! -   `Quasigroup`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:109:11
[INFO] [stdout]     |
[INFO] [stdout] 109 |   //! -         `Loop`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 110 | | //! -    `Semigroup`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:111:11
[INFO] [stdout]     |
[INFO] [stdout] 111 |   //! -       `Monoid`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 112 | | //! -        `Group`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:112:11
[INFO] [stdout]     |
[INFO] [stdout] 112 |   //! -        `Group`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 113 | | //! - `AbelianGroup`(`Additive`|`Multiplicative`)(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:138:11
[INFO] [stdout]     |
[INFO] [stdout] 138 |   //! -            `Ring`(`Approx`)?
[INFO] [stdout]     |  ___________^
[INFO] [stdout] 139 | | //! - `RingCommutative`(`Approx`)?
[INFO] [stdout]     | |____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]    --> src/structure/mod.rs:140:11
[INFO] [stdout]     |
[INFO] [stdout] 140 | //! -           `Field`(`Approx`)?
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout]     = note: error from rustc: unknown start of token: `
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "800b4c13736320d5db5ff5fa26311d55607fb3a5a612ef0b3bf21c9232451668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "800b4c13736320d5db5ff5fa26311d55607fb3a5a612ef0b3bf21c9232451668", kill_on_drop: false }`
[INFO] [stdout] 800b4c13736320d5db5ff5fa26311d55607fb3a5a612ef0b3bf21c9232451668