[INFO] fetching crate deltastruct 0.1.8...
[INFO] testing deltastruct-0.1.8 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate deltastruct 0.1.8 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate deltastruct 0.1.8
[INFO] finished tweaking crates.io crate deltastruct 0.1.8
[INFO] tweaked toml for crates.io crate deltastruct 0.1.8 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate deltastruct 0.1.8 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]     Updating crates.io index
[INFO] [stderr]      Locking 11 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 850e99907c0c67b2f70e2d3f3bd35826a1312419dc6da7277a8048946f412bd6
[INFO] running `Command { std: "docker" "start" "-a" "850e99907c0c67b2f70e2d3f3bd35826a1312419dc6da7277a8048946f412bd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "850e99907c0c67b2f70e2d3f3bd35826a1312419dc6da7277a8048946f412bd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "850e99907c0c67b2f70e2d3f3bd35826a1312419dc6da7277a8048946f412bd6", kill_on_drop: false }`
[INFO] [stdout] 850e99907c0c67b2f70e2d3f3bd35826a1312419dc6da7277a8048946f412bd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3faa30b8910a072ffca16bf1849e4ea3e97adaf886fd732dd903cb5cbd474d3b
[INFO] running `Command { std: "docker" "start" "-a" "3faa30b8910a072ffca16bf1849e4ea3e97adaf886fd732dd903cb5cbd474d3b", kill_on_drop: false }`
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling deltastruct_proc v0.1.8
[INFO] [stderr]    Compiling deltastruct v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "3faa30b8910a072ffca16bf1849e4ea3e97adaf886fd732dd903cb5cbd474d3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3faa30b8910a072ffca16bf1849e4ea3e97adaf886fd732dd903cb5cbd474d3b", kill_on_drop: false }`
[INFO] [stdout] 3faa30b8910a072ffca16bf1849e4ea3e97adaf886fd732dd903cb5cbd474d3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] fd9a813ffd2e6cd80016c38badffa6ad43e8df242e5c939e1dd19dbbd1c1c5fc
[INFO] running `Command { std: "docker" "start" "-a" "fd9a813ffd2e6cd80016c38badffa6ad43e8df242e5c939e1dd19dbbd1c1c5fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling deltastruct v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Testbug` is never constructed
[INFO] [stdout]    --> src/lib.rs:243:14
[INFO] [stdout]     |
[INFO] [stdout] 243 |       struct Testbug {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `bar` is never used
[INFO] [stdout]    --> src/lib.rs:248:12
[INFO] [stdout]     |
[INFO] [stdout] 247 |       impl Testbug {
[INFO] [stdout]     |       ------------ method in this implementation
[INFO] [stdout] 248 |         fn bar(&mut self) {}
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]    --> src/lib.rs:253:5
[INFO] [stdout]     |
[INFO] [stdout] 253 |     testbugdelta.clone();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 253 |     let _ = testbugdelta.clone();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "fd9a813ffd2e6cd80016c38badffa6ad43e8df242e5c939e1dd19dbbd1c1c5fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd9a813ffd2e6cd80016c38badffa6ad43e8df242e5c939e1dd19dbbd1c1c5fc", kill_on_drop: false }`
[INFO] [stdout] fd9a813ffd2e6cd80016c38badffa6ad43e8df242e5c939e1dd19dbbd1c1c5fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 25ab6a2f002d9b0dfda2f4d384fc6f51a7e7578ace8fb8c8f35bcdcc231cf275
[INFO] running `Command { std: "docker" "start" "-a" "25ab6a2f002d9b0dfda2f4d384fc6f51a7e7578ace8fb8c8f35bcdcc231cf275", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Testbug` is never constructed
[INFO] [stderr]    --> src/lib.rs:243:14
[INFO] [stderr]     |
[INFO] [stderr] 243 |       struct Testbug {
[INFO] [stderr]     |              ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `bar` is never used
[INFO] [stderr]    --> src/lib.rs:248:12
[INFO] [stderr]     |
[INFO] [stderr] 247 |       impl Testbug {
[INFO] [stderr]     |       ------------ method in this implementation
[INFO] [stderr] 248 |         fn bar(&mut self) {}
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `clone` that must be used
[INFO] [stderr]    --> src/lib.rs:253:5
[INFO] [stderr]     |
[INFO] [stderr] 253 |     testbugdelta.clone();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 253 |     let _ = testbugdelta.clone();
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `deltastruct` (lib test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/deltastruct-7920e32cd47c80be)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::self_func ... ok
[INFO] [stdout] test tests::delta_derives ... ok
[INFO] [stdout] test tests::field_func ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests deltastruct
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - deltastruct (line 128) ... ok
[INFO] [stdout] test src/lib.rs - DeltaStruct (line 163) ... ok
[INFO] [stdout] test src/lib.rs - deltastruct (line 103) ... ok
[INFO] [stdout] test src/lib.rs - DeltaStruct (line 149) ... ok
[INFO] [stdout] test src/lib.rs - (line 13) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.64s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "25ab6a2f002d9b0dfda2f4d384fc6f51a7e7578ace8fb8c8f35bcdcc231cf275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25ab6a2f002d9b0dfda2f4d384fc6f51a7e7578ace8fb8c8f35bcdcc231cf275", kill_on_drop: false }`
[INFO] [stdout] 25ab6a2f002d9b0dfda2f4d384fc6f51a7e7578ace8fb8c8f35bcdcc231cf275