[INFO] fetching crate algebra 0.2.0...
[INFO] documenting algebra-0.2.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate algebra 0.2.0 into /workspace/builds/worker-107/source
[INFO] validating manifest of crates.io crate algebra 0.2.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-107/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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_macros v0.2.29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bc5ce9b84f76870a60c845d2c84ac9bb2705fcd54cb8af8cbd2964b0f4c348d
[INFO] running `Command { std: "docker" "start" "-a" "4bc5ce9b84f76870a60c845d2c84ac9bb2705fcd54cb8af8cbd2964b0f4c348d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bc5ce9b84f76870a60c845d2c84ac9bb2705fcd54cb8af8cbd2964b0f4c348d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bc5ce9b84f76870a60c845d2c84ac9bb2705fcd54cb8af8cbd2964b0f4c348d", kill_on_drop: false }`
[INFO] [stdout] 4bc5ce9b84f76870a60c845d2c84ac9bb2705fcd54cb8af8cbd2964b0f4c348d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a6733fe434fc17ed8c5462574ba008048cd9250b8d5edf992c977d8d7f300e8
[INFO] running `Command { std: "docker" "start" "-a" "4a6733fe434fc17ed8c5462574ba008048cd9250b8d5edf992c977d8d7f300e8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 2.61s
[INFO] running `Command { std: "docker" "inspect" "4a6733fe434fc17ed8c5462574ba008048cd9250b8d5edf992c977d8d7f300e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a6733fe434fc17ed8c5462574ba008048cd9250b8d5edf992c977d8d7f300e8", kill_on_drop: false }`
[INFO] [stdout] 4a6733fe434fc17ed8c5462574ba008048cd9250b8d5edf992c977d8d7f300e8
