[INFO] fetching crate structural 0.4.3...
[INFO] testing structural-0.4.3 against 1.75.0 for beta-1.76-1
[INFO] extracting crate structural 0.4.3 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate structural 0.4.3 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 crates.io crate structural 0.4.3
[INFO] finished tweaking crates.io crate structural 0.4.3
[INFO] tweaked toml for crates.io crate structural 0.4.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded typed-arena v1.5.0
[INFO] [stderr]   Downloaded as_derive_utils v0.8.3
[INFO] [stderr]   Downloaded structural_derive v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 45d50af6d73b1d37a5b28074f1d80ef1213cc1e227e2697dd0bd1ada60f33cf4
[INFO] running `Command { std: "docker" "start" "-a" "45d50af6d73b1d37a5b28074f1d80ef1213cc1e227e2697dd0bd1ada60f33cf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45d50af6d73b1d37a5b28074f1d80ef1213cc1e227e2697dd0bd1ada60f33cf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45d50af6d73b1d37a5b28074f1d80ef1213cc1e227e2697dd0bd1ada60f33cf4", kill_on_drop: false }`
[INFO] [stdout] 45d50af6d73b1d37a5b28074f1d80ef1213cc1e227e2697dd0bd1ada60f33cf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ca092966f65886c90424398ca17a16cfd425d4172db6c39a04583d6c5b0fd82
[INFO] running `Command { std: "docker" "start" "-a" "9ca092966f65886c90424398ca17a16cfd425d4172db6c39a04583d6c5b0fd82", kill_on_drop: false }`
[INFO] [stderr]    Compiling typed-arena v1.5.0
[INFO] [stderr]    Compiling core_extensions v0.1.20
[INFO] [stderr]    Compiling as_derive_utils v0.8.3
[INFO] [stderr]    Compiling structural_derive v0.4.3
[INFO] [stderr]    Compiling structural v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/utils.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn drop(&mut self) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 40 |     }
[INFO] [stdout]    |     - recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.72s
[INFO] running `Command { std: "docker" "inspect" "9ca092966f65886c90424398ca17a16cfd425d4172db6c39a04583d6c5b0fd82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ca092966f65886c90424398ca17a16cfd425d4172db6c39a04583d6c5b0fd82", kill_on_drop: false }`
[INFO] [stdout] 9ca092966f65886c90424398ca17a16cfd425d4172db6c39a04583d6c5b0fd82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2aede175442245a777a70d435c36a1ad4c8b9955cf98e6c3079f81ca2aa60d5a
[INFO] running `Command { std: "docker" "start" "-a" "2aede175442245a777a70d435c36a1ad4c8b9955cf98e6c3079f81ca2aa60d5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling structural v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/utils.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn drop(&mut self) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 40 |     }
[INFO] [stdout]    |     - recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: tests must be run with the "testing" feature
[INFO] [stdout]    --> src/lib.rs:788:1
[INFO] [stdout]     |
[INFO] [stdout] 788 | compile_error! { "tests must be run with the \"testing\" feature" }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::test_utils`
[INFO] [stdout]    --> src/field/array_impls.rs:323:24
[INFO] [stdout]     |
[INFO] [stdout] 323 |             use crate::test_utils::DecOnDrop;
[INFO] [stdout]     |                        ^^^^^^^^^^ could not find `test_utils` in the crate root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `structural` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "2aede175442245a777a70d435c36a1ad4c8b9955cf98e6c3079f81ca2aa60d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aede175442245a777a70d435c36a1ad4c8b9955cf98e6c3079f81ca2aa60d5a", kill_on_drop: false }`
[INFO] [stdout] 2aede175442245a777a70d435c36a1ad4c8b9955cf98e6c3079f81ca2aa60d5a
