[INFO] fetching crate backtrack 0.3.0...
[INFO] documenting backtrack-0.3.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate backtrack 0.3.0 into /workspace/builds/worker-70/source
[INFO] validating manifest of crates.io crate backtrack 0.3.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backtrack 0.3.0
[INFO] finished tweaking crates.io crate backtrack 0.3.0
[INFO] tweaked toml for crates.io crate backtrack 0.3.0 written to /workspace/builds/worker-70/source/Cargo.toml
[INFO] crate crates.io crate backtrack 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7945afe8c7546a018dabe3e5cb38466bf609a88bef3d9e9297b893f5c190cef
[INFO] running `Command { std: "docker" "start" "-a" "a7945afe8c7546a018dabe3e5cb38466bf609a88bef3d9e9297b893f5c190cef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7945afe8c7546a018dabe3e5cb38466bf609a88bef3d9e9297b893f5c190cef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7945afe8c7546a018dabe3e5cb38466bf609a88bef3d9e9297b893f5c190cef", kill_on_drop: false }`
[INFO] [stdout] a7945afe8c7546a018dabe3e5cb38466bf609a88bef3d9e9297b893f5c190cef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a5dbdc09782ed738d3d206877510ca68e5c407964b00bed24c7fc32d477af09
[INFO] running `Command { std: "docker" "start" "-a" "9a5dbdc09782ed738d3d206877510ca68e5c407964b00bed24c7fc32d477af09", kill_on_drop: false }`
[INFO] [stderr]  Documenting backtrack v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `0,2,2,0`
[INFO] [stdout]  --> src/problems/total_sum.rs:5:73
[INFO] [stdout]   |
[INFO] [stdout] 5 | /// If e.g. `sum_at_least` is 3 and 4 arbitrary integers are required, [0,2,2,0],
[INFO] [stdout]   |                                                                         ^^^^^^^ no item named `0,2,2,0` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `1,1,0,1`
[INFO] [stdout]  --> src/problems/total_sum.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | /// [1,1,0,1] and [2,0,3,0] are valid while [1,1,1,1] is not.
[INFO] [stdout]   |      ^^^^^^^ no item named `1,1,0,1` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `2,0,3,0`
[INFO] [stdout]  --> src/problems/total_sum.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | /// [1,1,0,1] and [2,0,3,0] are valid while [1,1,1,1] is not.
[INFO] [stdout]   |                    ^^^^^^^ no item named `2,0,3,0` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `1,1,1,1`
[INFO] [stdout]  --> src/problems/total_sum.rs:6:46
[INFO] [stdout]   |
[INFO] [stdout] 6 | /// [1,1,0,1] and [2,0,3,0] are valid while [1,1,1,1] is not.
[INFO] [stdout]   |                                              ^^^^^^^ no item named `1,1,1,1` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "9a5dbdc09782ed738d3d206877510ca68e5c407964b00bed24c7fc32d477af09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a5dbdc09782ed738d3d206877510ca68e5c407964b00bed24c7fc32d477af09", kill_on_drop: false }`
[INFO] [stdout] 9a5dbdc09782ed738d3d206877510ca68e5c407964b00bed24c7fc32d477af09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 81bd3ea5e2c2d84c48f4577a1f2b84fd1eb5b6d92b9608a1f94a922d5cdb1493
[INFO] running `Command { std: "docker" "start" "-a" "81bd3ea5e2c2d84c48f4577a1f2b84fd1eb5b6d92b9608a1f94a922d5cdb1493", kill_on_drop: false }`
[INFO] [stderr]  Documenting backtrack v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] [stdout] warning: unresolved link to `0,2,2,0`
[INFO] [stdout]  --> src/problems/total_sum.rs:5:73
[INFO] [stdout]   |
[INFO] [stdout] 5 | /// If e.g. `sum_at_least` is 3 and 4 arbitrary integers are required, [0,2,2,0],
[INFO] [stdout]   |                                                                         ^^^^^^^ no item named `0,2,2,0` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `1,1,0,1`
[INFO] [stdout]  --> src/problems/total_sum.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | /// [1,1,0,1] and [2,0,3,0] are valid while [1,1,1,1] is not.
[INFO] [stdout]   |      ^^^^^^^ no item named `1,1,0,1` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `2,0,3,0`
[INFO] [stdout]  --> src/problems/total_sum.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | /// [1,1,0,1] and [2,0,3,0] are valid while [1,1,1,1] is not.
[INFO] [stdout]   |                    ^^^^^^^ no item named `2,0,3,0` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `1,1,1,1`
[INFO] [stdout]  --> src/problems/total_sum.rs:6:46
[INFO] [stdout]   |
[INFO] [stdout] 6 | /// [1,1,0,1] and [2,0,3,0] are valid while [1,1,1,1] is not.
[INFO] [stdout]   |                                              ^^^^^^^ no item named `1,1,1,1` in scope
[INFO] [stdout]   |
[INFO] [stdout]   = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "81bd3ea5e2c2d84c48f4577a1f2b84fd1eb5b6d92b9608a1f94a922d5cdb1493", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81bd3ea5e2c2d84c48f4577a1f2b84fd1eb5b6d92b9608a1f94a922d5cdb1493", kill_on_drop: false }`
[INFO] [stdout] 81bd3ea5e2c2d84c48f4577a1f2b84fd1eb5b6d92b9608a1f94a922d5cdb1493