[INFO] fetching crate algebra 0.2.0...
[INFO] documenting algebra-0.2.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate algebra 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate algebra 0.2.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f849b7776bcf7345f0e785351f3db8e59ac87c6d3d9d59b3b0a857fcd3a6fac3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f849b7776bcf7345f0e785351f3db8e59ac87c6d3d9d59b3b0a857fcd3a6fac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f849b7776bcf7345f0e785351f3db8e59ac87c6d3d9d59b3b0a857fcd3a6fac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f849b7776bcf7345f0e785351f3db8e59ac87c6d3d9d59b3b0a857fcd3a6fac3", kill_on_drop: false }`
[INFO] [stdout] f849b7776bcf7345f0e785351f3db8e59ac87c6d3d9d59b3b0a857fcd3a6fac3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af36dec790a29f7be7058d7be2e6f2f80dfa3306b51247d6cd324431d7383d1c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "af36dec790a29f7be7058d7be2e6f2f80dfa3306b51247d6cd324431d7383d1c", 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: 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 1.87s
[INFO] running `Command { std: "docker" "inspect" "af36dec790a29f7be7058d7be2e6f2f80dfa3306b51247d6cd324431d7383d1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af36dec790a29f7be7058d7be2e6f2f80dfa3306b51247d6cd324431d7383d1c", kill_on_drop: false }`
[INFO] [stdout] af36dec790a29f7be7058d7be2e6f2f80dfa3306b51247d6cd324431d7383d1c