[INFO] fetching crate structural 0.4.3...
[INFO] checking structural-0.4.3 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate structural 0.4.3 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate structural 0.4.3 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structural_derive v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb6209fee1d302e7c1aa1b3f8bbd229f80ca4644668bca325ff1fa7b8637e997
[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" "fb6209fee1d302e7c1aa1b3f8bbd229f80ca4644668bca325ff1fa7b8637e997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb6209fee1d302e7c1aa1b3f8bbd229f80ca4644668bca325ff1fa7b8637e997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb6209fee1d302e7c1aa1b3f8bbd229f80ca4644668bca325ff1fa7b8637e997", kill_on_drop: false }`
[INFO] [stdout] fb6209fee1d302e7c1aa1b3f8bbd229f80ca4644668bca325ff1fa7b8637e997
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 205ac5b170cdf92740e1766122f9f518c52597f131318570772ddf1c774a9a34
[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" "205ac5b170cdf92740e1766122f9f518c52597f131318570772ddf1c774a9a34", kill_on_drop: false }`
[INFO] [stderr]    Compiling typed-arena v1.5.0
[INFO] [stderr]    Compiling core_extensions v0.1.18
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling as_derive_utils v0.8.3
[INFO] [stderr]    Compiling structural_derive v0.4.3
[INFO] [stderr]     Checking structural v0.4.3 (/opt/rustwide/workdir)
[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]     |                        ^^^^^^^^^^ maybe a missing crate `test_utils`?
[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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "205ac5b170cdf92740e1766122f9f518c52597f131318570772ddf1c774a9a34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "205ac5b170cdf92740e1766122f9f518c52597f131318570772ddf1c774a9a34", kill_on_drop: false }`
[INFO] [stdout] 205ac5b170cdf92740e1766122f9f518c52597f131318570772ddf1c774a9a34