[INFO] cloning repository https://github.com/NikitaMGrimm/rust-learning-problems
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NikitaMGrimm/rust-learning-problems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitaMGrimm%2Frust-learning-problems", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitaMGrimm%2Frust-learning-problems'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aeefb4a9812508da36585c152c3a5a2fbbd38763
[INFO] documenting NikitaMGrimm/rust-learning-problems against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikitaMGrimm%2Frust-learning-problems" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NikitaMGrimm/rust-learning-problems on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NikitaMGrimm/rust-learning-problems
[INFO] finished tweaking git repo https://github.com/NikitaMGrimm/rust-learning-problems
[INFO] tweaked toml for git repo https://github.com/NikitaMGrimm/rust-learning-problems written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/NikitaMGrimm/rust-learning-problems 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f46bd5ad979d6ba2edab8b798ad9d81e8c1700c3a1db0342e1fbb95a0e7931e
[INFO] running `Command { std: "docker" "start" "-a" "3f46bd5ad979d6ba2edab8b798ad9d81e8c1700c3a1db0342e1fbb95a0e7931e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f46bd5ad979d6ba2edab8b798ad9d81e8c1700c3a1db0342e1fbb95a0e7931e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f46bd5ad979d6ba2edab8b798ad9d81e8c1700c3a1db0342e1fbb95a0e7931e", kill_on_drop: false }`
[INFO] [stdout] 3f46bd5ad979d6ba2edab8b798ad9d81e8c1700c3a1db0342e1fbb95a0e7931e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36d96dbb642315e17e9b35f1deecb4e1fbd148c3602938f79a7716f527159887
[INFO] running `Command { std: "docker" "start" "-a" "36d96dbb642315e17e9b35f1deecb4e1fbd148c3602938f79a7716f527159887", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking hello_multithread v0.1.0 (/opt/rustwide/workdir/RustBook/hello_multithread)
[INFO] [stderr]  Documenting fahrenheit_to_celsius v0.1.0 (/opt/rustwide/workdir/RustBook/fahrenheit_to_celsius)
[INFO] [stderr]  Documenting blog_testing_oop v0.1.0 (/opt/rustwide/workdir/RustBook/blog_testing_oop)
[INFO] [stderr]  Documenting fibonacci_generator v0.1.0 (/opt/rustwide/workdir/RustBook/fibonacci_generator)
[INFO] [stderr]  Documenting mystery_identity v0.1.0 (/opt/rustwide/workdir/RustBook/mystery_identity)
[INFO] [stderr]  Documenting progress_bar v0.1.0 (/opt/rustwide/workdir/RustBook/progress_bar)
[INFO] [stderr]  Documenting rectangles_area_method v0.1.0 (/opt/rustwide/workdir/RustBook/rectangles_area_method)
[INFO] [stderr]  Documenting sort_and_star v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/sort_and_star)
[INFO] [stderr]  Documenting hello_multithread v0.1.0 (/opt/rustwide/workdir/RustBook/hello_multithread)
[INFO] [stderr]  Documenting total_amount_of_points v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/total_amount_of_points)
[INFO] [stderr]  Documenting adder v0.1.0 (/opt/rustwide/workdir/RustBook/adder)
[INFO] [stderr]  Documenting basic_mathematical_operations v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/basic_mathematical_operations)
[INFO] [stderr]  Documenting grasshopper_summation v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/grasshopper_summation)
[INFO] [stderr]  Documenting advanced_closures_testing v0.1.0 (/opt/rustwide/workdir/RustBook/advanced_closures_testing)
[INFO] [stderr]  Documenting threadpool_testing v0.1.0 (/opt/rustwide/workdir/RustBook/threadpool_testing)
[INFO] [stderr]  Documenting sized_advanced_types_testing v0.1.0 (/opt/rustwide/workdir/RustBook/sized_advanced_types_testing)
[INFO] [stderr]  Documenting ownership_testing v0.1.0 (/opt/rustwide/workdir/RustBook/ownership_testing)
[INFO] [stderr]  Documenting twelve_days_of_christmas v0.1.0 (/opt/rustwide/workdir/RustBook/twelve_days_of_christmas)
[INFO] [stderr]  Documenting unsafe_testing v0.1.0 (/opt/rustwide/workdir/RustBook/unsafe_testing)
[INFO] [stderr]  Documenting nmg_first_crate v0.1.0 (/opt/rustwide/workdir/RustBook/closure_argument_macro)
[INFO] [stderr]  Documenting variables v0.1.0 (/opt/rustwide/workdir/RustBook/variables)
[INFO] [stderr]  Documenting lifetime_example v0.1.0 (/opt/rustwide/workdir/RustBook/lifetime_example)
[INFO] [stderr]  Documenting loop_label v0.1.0 (/opt/rustwide/workdir/RustBook/loop_label)
[INFO] [stderr]  Documenting rectangles v0.1.0 (/opt/rustwide/workdir/RustBook/rectangles)
[INFO] [stderr]  Documenting while_as_loop v0.1.0 (/opt/rustwide/workdir/RustBook/while_as_loop)
[INFO] [stderr]  Documenting you_cant_code_under_pressure_1 v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/you_cant_code_under_pressure_1)
[INFO] [stderr]  Documenting traits_and_stuff v0.1.0 (/opt/rustwide/workdir/RustBook/traits_and_stuff)
[INFO] [stderr]  Documenting volume_of_a_cuboid v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/volume_of_a_cuboid)
[INFO] [stderr]  Documenting another_function v0.1.0 (/opt/rustwide/workdir/RustBook/another_function)
[INFO] [stderr]  Documenting grasshopper_messi_goals_function v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/grasshopper_messi_goals_function)
[INFO] [stderr]  Documenting function_1_hello_world v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/function_1_hello_world)
[INFO] [stderr]  Documenting match_control_flow v0.1.0 (/opt/rustwide/workdir/RustBook/match_control_flow)
[INFO] [stderr]  Documenting minigrep v0.1.0 (/opt/rustwide/workdir/RustBook/minigrep)
[INFO] [stderr]  Documenting parse_nice_int_from_char_problem v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/parse_nice_int_from_char_problem)
[INFO] [stderr]  Documenting closures v0.1.0 (/opt/rustwide/workdir/RustBook/closures)
[INFO] [stderr]  Documenting blog_testing_oop_rusty v0.1.0 (/opt/rustwide/workdir/RustBook/blog_testing_oop_rusty)
[INFO] [stderr]  Documenting grasshopper_messi_goals v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/grasshopper_messi_goals)
[INFO] [stderr]  Documenting hello v0.1.0 (/opt/rustwide/workdir/RustBook/hello)
[INFO] [stderr]  Documenting powers_of_2 v0.1.0 (/opt/rustwide/workdir/Codewars/8kyu/powers_of_2)
[INFO] [stderr]  Documenting restaurant v0.1.0 (/opt/rustwide/workdir/RustBook/restaurant)
[INFO] [stderr]  Documenting string_slices v0.1.0 (/opt/rustwide/workdir/RustBook/string_slices)
[INFO] [stderr]  Documenting structs_testing v0.1.0 (/opt/rustwide/workdir/RustBook/structs_testing)
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]  Documenting enums_and_pattern_matching v0.1.0 (/opt/rustwide/workdir/RustBook/enums_and_pattern_matching)
[INFO] [stderr]  Documenting calc_averages v0.1.0 (/opt/rustwide/workdir/RustBook/calc_averages)
[INFO] [stderr]  Documenting macro_testing v0.1.0 (/opt/rustwide/workdir/RustBook/macro_testing)
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]  Documenting multithreading_testing v0.1.0 (/opt/rustwide/workdir/RustBook/multithreading_testing)
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]  Documenting guessing_game v0.1.0 (/opt/rustwide/workdir/RustBook/guessing_game)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/adder/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/advanced_closures_testing/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/another_function/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/basic_mathematical_operations/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/blog_testing_oop/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/blog_testing_oop_rusty/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/calc_averages/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/closures/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/enums_and_pattern_matching/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/fahrenheit_to_celsius/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/fibonacci_generator/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/function_1_hello_world/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/grasshopper_messi_goals/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/grasshopper_messi_goals_function/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/grasshopper_summation/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/guessing_game/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/hello/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/hello_multithread/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/lifetime_example/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/loop_label/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/macro_testing/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/match_control_flow/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/minigrep/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/multithreading_testing/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/mystery_identity/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/nmg_first_crate/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/ownership_testing/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/parse_nice_int_from_char_problem/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/powers_of_2/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/progress_bar/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/rectangles/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/rectangles_area_method/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/restaurant/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/sized_advanced_types_testing/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/sort_and_star/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/string_slices/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/structs_testing/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/threadpool_testing/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/total_amount_of_points/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/traits_and_stuff/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/twelve_days_of_christmas/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/unsafe_testing/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/variables/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/volume_of_a_cuboid/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/while_as_loop/index.html
[INFO] [stderr]    Generated /opt/rustwide/target/doc/you_cant_code_under_pressure_1/index.html
[INFO] running `Command { std: "docker" "inspect" "36d96dbb642315e17e9b35f1deecb4e1fbd148c3602938f79a7716f527159887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d96dbb642315e17e9b35f1deecb4e1fbd148c3602938f79a7716f527159887", kill_on_drop: false }`
[INFO] [stdout] 36d96dbb642315e17e9b35f1deecb4e1fbd148c3602938f79a7716f527159887
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcdc1591e18b1032c6dfa0c776579a8271031b92179b30f862cf30969b03e21d
[INFO] running `Command { std: "docker" "start" "-a" "fcdc1591e18b1032c6dfa0c776579a8271031b92179b30f862cf30969b03e21d", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
[INFO] running `Command { std: "docker" "inspect" "fcdc1591e18b1032c6dfa0c776579a8271031b92179b30f862cf30969b03e21d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcdc1591e18b1032c6dfa0c776579a8271031b92179b30f862cf30969b03e21d", kill_on_drop: false }`
[INFO] [stdout] fcdc1591e18b1032c6dfa0c776579a8271031b92179b30f862cf30969b03e21d
