[INFO] cloning repository https://github.com/nw-wood/rust_book_workspace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nw-wood/rust_book_workspace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnw-wood%2Frust_book_workspace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnw-wood%2Frust_book_workspace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 962db9da0cb2e1039578f83dca59e72ee40a2960
[INFO] checking nw-wood/rust_book_workspace against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnw-wood%2Frust_book_workspace" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nw-wood/rust_book_workspace
[INFO] finished tweaking git repo https://github.com/nw-wood/rust_book_workspace
[INFO] tweaked toml for git repo https://github.com/nw-wood/rust_book_workspace written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nw-wood/rust_book_workspace on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nw-wood/rust_book_workspace 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust_list v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19f65952d204cb63300b5299ba10d838b3d69f0821553fde84dd9b45030caa6a
[INFO] running `Command { std: "docker" "start" "-a" "19f65952d204cb63300b5299ba10d838b3d69f0821553fde84dd9b45030caa6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19f65952d204cb63300b5299ba10d838b3d69f0821553fde84dd9b45030caa6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19f65952d204cb63300b5299ba10d838b3d69f0821553fde84dd9b45030caa6a", kill_on_drop: false }`
[INFO] [stdout] 19f65952d204cb63300b5299ba10d838b3d69f0821553fde84dd9b45030caa6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 636f78fb0718576667b9fbb61c56d7813c72b6fc675efc1364d43873e12c3843
[INFO] running `Command { std: "docker" "start" "-a" "636f78fb0718576667b9fbb61c56d7813c72b6fc675efc1364d43873e12c3843", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_book_utilities v0.1.0 (/opt/rustwide/workdir/rust_book_utilities)
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking rust_list v0.2.0
[INFO] [stderr]     Checking _6_enums_and_pattern_matching v0.1.0 (/opt/rustwide/workdir/_6_enums_and_pattern_matching)
[INFO] [stderr]     Checking _12_building_a_command_line_program v0.1.0 (/opt/rustwide/workdir/_12_building_a_command_line_program)
[INFO] [stderr]     Checking _10_generic_types_traits_and_lifetimes v0.1.0 (/opt/rustwide/workdir/_10_generic_types_traits_and_lifetimes)
[INFO] [stderr]     Checking _17_object_oreinted_programming_in_rust v0.1.0 (/opt/rustwide/workdir/_17_object_oreinted_programming_in_rust)
[INFO] [stderr]     Checking _21_appendix v0.1.0 (/opt/rustwide/workdir/_21_appendix)
[INFO] [stderr]     Checking _18_patterns_and_matching v0.1.0 (/opt/rustwide/workdir/_18_patterns_and_matching)
[INFO] [stderr]     Checking _15_smart_pointers v0.1.0 (/opt/rustwide/workdir/_15_smart_pointers)
[INFO] [stderr]     Checking _3_common_programming_concepts v0.1.0 (/opt/rustwide/workdir/_3_common_programming_concepts)
[INFO] [stderr]     Checking _4_understanding_ownership v0.1.0 (/opt/rustwide/workdir/_4_understanding_ownership)
[INFO] [stderr]     Checking _7_packages_crates_and_modules v0.1.0 (/opt/rustwide/workdir/_7_packages_crates_and_modules)
[INFO] [stderr]     Checking _14_cargo_and_crates_io v0.1.0 (/opt/rustwide/workdir/_14_cargo_and_crates_io)
[INFO] [stderr]     Checking _11_writing_automated_tests v0.1.0 (/opt/rustwide/workdir/_11_writing_automated_tests)
[INFO] [stderr]     Checking _16_fearless_concurrency v0.1.0 (/opt/rustwide/workdir/_16_fearless_concurrency)
[INFO] [stderr]     Checking _20_building_a_multithreaded_web_server v0.1.0 (/opt/rustwide/workdir/_20_building_a_multithreaded_web_server)
[INFO] [stderr]     Checking _5_using_structs_to_structure_related_data v0.1.0 (/opt/rustwide/workdir/_5_using_structs_to_structure_related_data)
[INFO] [stderr]     Checking _9_error_handling v0.1.0 (/opt/rustwide/workdir/_9_error_handling)
[INFO] [stderr]     Checking _13_iterators_and_closures v0.1.0 (/opt/rustwide/workdir/_13_iterators_and_closures)
[INFO] [stderr]     Checking _8_common_collections v0.1.0 (/opt/rustwide/workdir/_8_common_collections)
[INFO] [stderr]     Checking _1_getting_started v0.1.0 (/opt/rustwide/workdir/_1_getting_started)
[INFO] [stderr]     Checking _19_advanced_features v0.1.0 (/opt/rustwide/workdir/_19_advanced_features)
[INFO] [stdout] warning: struct `Button` is never constructed
[INFO] [stdout]   --> _17_object_oreinted_programming_in_rust/src/lib.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |         pub struct Button {}
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> _19_advanced_features/src/lib.rs:104:24
[INFO] [stdout]     |
[INFO] [stdout] 104 |             assert_eq!(COUNTER, 3); //required again to assert equal to 3
[INFO] [stdout]     |                        ^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking _2_programming_a_guessing_game v0.1.0 (/opt/rustwide/workdir/_2_programming_a_guessing_game)
[INFO] [stderr]     Checking rust_book_run v0.1.0 (/opt/rustwide/workdir/rust_book_run)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.49s
[INFO] running `Command { std: "docker" "inspect" "636f78fb0718576667b9fbb61c56d7813c72b6fc675efc1364d43873e12c3843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "636f78fb0718576667b9fbb61c56d7813c72b6fc675efc1364d43873e12c3843", kill_on_drop: false }`
[INFO] [stdout] 636f78fb0718576667b9fbb61c56d7813c72b6fc675efc1364d43873e12c3843
