[INFO] fetching crate delta-struct 0.1.0...
[INFO] testing delta-struct-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate delta-struct 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate delta-struct 0.1.0
[INFO] finished tweaking crates.io crate delta-struct 0.1.0
[INFO] tweaked toml for crates.io crate delta-struct 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate delta-struct 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9446ef7f02b1e514a3bf7a7000bd651ae42980428ec6913e653ac5b3e17676f5
[INFO] running `Command { std: "docker" "start" "-a" "9446ef7f02b1e514a3bf7a7000bd651ae42980428ec6913e653ac5b3e17676f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9446ef7f02b1e514a3bf7a7000bd651ae42980428ec6913e653ac5b3e17676f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9446ef7f02b1e514a3bf7a7000bd651ae42980428ec6913e653ac5b3e17676f5", kill_on_drop: false }`
[INFO] [stdout] 9446ef7f02b1e514a3bf7a7000bd651ae42980428ec6913e653ac5b3e17676f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1002503bb22e6b8cf79685b8366970aa20b3edc53f04dc78f4bec7ed2224cbe
[INFO] running `Command { std: "docker" "start" "-a" "b1002503bb22e6b8cf79685b8366970aa20b3edc53f04dc78f4bec7ed2224cbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling delta-struct-macros v0.1.0
[INFO] [stderr]    Compiling delta-struct v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.27s
[INFO] running `Command { std: "docker" "inspect" "b1002503bb22e6b8cf79685b8366970aa20b3edc53f04dc78f4bec7ed2224cbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1002503bb22e6b8cf79685b8366970aa20b3edc53f04dc78f4bec7ed2224cbe", kill_on_drop: false }`
[INFO] [stdout] b1002503bb22e6b8cf79685b8366970aa20b3edc53f04dc78f4bec7ed2224cbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d82dae9a2d7084e001973dc4a413fd3a03f49f90adde9238c315cc6c55b8e402
[INFO] running `Command { std: "docker" "start" "-a" "d82dae9a2d7084e001973dc4a413fd3a03f49f90adde9238c315cc6c55b8e402", kill_on_drop: false }`
[INFO] [stderr]    Compiling delta-struct v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `UnitType` is never constructed
[INFO] [stdout]   --> src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     struct UnitType;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NewTypeWithGeneric` is never constructed
[INFO] [stdout]   --> src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     struct NewTypeWithGeneric<T>(T);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimpleTypeWithGeneric` is never constructed
[INFO] [stdout]   --> src/lib.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     struct SimpleTypeWithGeneric<T> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DeviceConfig` is never constructed
[INFO] [stdout]   --> src/lib.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     struct DeviceConfig {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "d82dae9a2d7084e001973dc4a413fd3a03f49f90adde9238c315cc6c55b8e402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d82dae9a2d7084e001973dc4a413fd3a03f49f90adde9238c315cc6c55b8e402", kill_on_drop: false }`
[INFO] [stdout] d82dae9a2d7084e001973dc4a413fd3a03f49f90adde9238c315cc6c55b8e402
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 40b86976d89f7d58d8c67dee5cc0e4e20322abcda498d94a50c54dfba7541729
[INFO] running `Command { std: "docker" "start" "-a" "40b86976d89f7d58d8c67dee5cc0e4e20322abcda498d94a50c54dfba7541729", kill_on_drop: false }`
[INFO] [stderr] warning: struct `UnitType` is never constructed
[INFO] [stderr]   --> src/lib.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     struct UnitType;
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `NewTypeWithGeneric` is never constructed
[INFO] [stderr]   --> src/lib.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 |     struct NewTypeWithGeneric<T>(T);
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `SimpleTypeWithGeneric` is never constructed
[INFO] [stderr]   --> src/lib.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 |     struct SimpleTypeWithGeneric<T> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `DeviceConfig` is never constructed
[INFO] [stderr]   --> src/lib.rs:75:12
[INFO] [stderr]    |
[INFO] [stderr] 75 |     struct DeviceConfig {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `delta-struct` (lib test) generated 4 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/delta_struct-fd40821d064ced4d)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::apply_delta_all_field_types ... ok
[INFO] [stdout] test tests::default_type_respected ... ok
[INFO] [stdout] test tests::delta_false_positive_check ... ok
[INFO] [stdout] test tests::delta_field ... ok
[INFO] [stdout] test tests::scalar_delta_false_positive_check ... ok
[INFO] [stdout] test tests::unordered_with_scalar ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests delta_struct
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "40b86976d89f7d58d8c67dee5cc0e4e20322abcda498d94a50c54dfba7541729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40b86976d89f7d58d8c67dee5cc0e4e20322abcda498d94a50c54dfba7541729", kill_on_drop: false }`
[INFO] [stdout] 40b86976d89f7d58d8c67dee5cc0e4e20322abcda498d94a50c54dfba7541729