[INFO] fetching crate sample-config-macros 0.2.0...
[INFO] testing sample-config-macros-0.2.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sample-config-macros 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate sample-config-macros 0.2.0
[INFO] finished tweaking crates.io crate sample-config-macros 0.2.0
[INFO] tweaked toml for crates.io crate sample-config-macros 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sample-config-macros 0.2.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.117)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 99f39518973ae2d089b31672a0048b10869ec74c28cfc246ddbfd32aad0ca78b
[INFO] running `Command { std: "docker" "start" "-a" "99f39518973ae2d089b31672a0048b10869ec74c28cfc246ddbfd32aad0ca78b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99f39518973ae2d089b31672a0048b10869ec74c28cfc246ddbfd32aad0ca78b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99f39518973ae2d089b31672a0048b10869ec74c28cfc246ddbfd32aad0ca78b", kill_on_drop: false }`
[INFO] [stdout] 99f39518973ae2d089b31672a0048b10869ec74c28cfc246ddbfd32aad0ca78b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a9adc432fe557b8a8c2cb162eeac00a78e17923aad5843df860f4678c3b3210
[INFO] running `Command { std: "docker" "start" "-a" "6a9adc432fe557b8a8c2cb162eeac00a78e17923aad5843df860f4678c3b3210", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling sample-config-macros v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `yaml_fields`
[INFO] [stdout]    --> src/derive.rs:114:6
[INFO] [stdout]     |
[INFO] [stdout] 114 |     let yaml_fields = fields.iter().map(FieldData::to_yaml_generator);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yaml_fields`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `json_fields`
[INFO] [stdout]    --> src/derive.rs:115:6
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let json_fields = fields.iter().map(FieldData::to_json_generator);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_json_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_idents`
[INFO] [stdout]    --> src/derive.rs:160:6
[INFO] [stdout]     |
[INFO] [stdout] 160 |     let variant_idents = data.variants.iter().map(|variant| &variant.ident).collect::<Vec<_>>();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_idents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_strings`
[INFO] [stdout]    --> src/derive.rs:161:6
[INFO] [stdout]     |
[INFO] [stdout] 161 |     let variant_strings =
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_strings`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.40s
[INFO] running `Command { std: "docker" "inspect" "6a9adc432fe557b8a8c2cb162eeac00a78e17923aad5843df860f4678c3b3210", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a9adc432fe557b8a8c2cb162eeac00a78e17923aad5843df860f4678c3b3210", kill_on_drop: false }`
[INFO] [stdout] 6a9adc432fe557b8a8c2cb162eeac00a78e17923aad5843df860f4678c3b3210
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf2648a6b3f66c886dff3634d0fc9a3fd376fcf03788ca0ca7a0b25c27a7593c
[INFO] running `Command { std: "docker" "start" "-a" "bf2648a6b3f66c886dff3634d0fc9a3fd376fcf03788ca0ca7a0b25c27a7593c", kill_on_drop: false }`
[INFO] [stderr]    Compiling sample-config-macros v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `yaml_fields`
[INFO] [stdout]    --> src/derive.rs:114:6
[INFO] [stdout]     |
[INFO] [stdout] 114 |     let yaml_fields = fields.iter().map(FieldData::to_yaml_generator);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yaml_fields`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `json_fields`
[INFO] [stdout]    --> src/derive.rs:115:6
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let json_fields = fields.iter().map(FieldData::to_json_generator);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_json_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_idents`
[INFO] [stdout]    --> src/derive.rs:160:6
[INFO] [stdout]     |
[INFO] [stdout] 160 |     let variant_idents = data.variants.iter().map(|variant| &variant.ident).collect::<Vec<_>>();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_idents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_strings`
[INFO] [stdout]    --> src/derive.rs:161:6
[INFO] [stdout]     |
[INFO] [stdout] 161 |     let variant_strings =
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_strings`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `yaml_fields`
[INFO] [stdout]    --> src/derive.rs:114:6
[INFO] [stdout]     |
[INFO] [stdout] 114 |     let yaml_fields = fields.iter().map(FieldData::to_yaml_generator);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yaml_fields`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `json_fields`
[INFO] [stdout]    --> src/derive.rs:115:6
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let json_fields = fields.iter().map(FieldData::to_json_generator);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_json_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_idents`
[INFO] [stdout]    --> src/derive.rs:160:6
[INFO] [stdout]     |
[INFO] [stdout] 160 |     let variant_idents = data.variants.iter().map(|variant| &variant.ident).collect::<Vec<_>>();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_idents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_strings`
[INFO] [stdout]    --> src/derive.rs:161:6
[INFO] [stdout]     |
[INFO] [stdout] 161 |     let variant_strings =
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_strings`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "bf2648a6b3f66c886dff3634d0fc9a3fd376fcf03788ca0ca7a0b25c27a7593c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf2648a6b3f66c886dff3634d0fc9a3fd376fcf03788ca0ca7a0b25c27a7593c", kill_on_drop: false }`
[INFO] [stdout] bf2648a6b3f66c886dff3634d0fc9a3fd376fcf03788ca0ca7a0b25c27a7593c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8c099fa3d5227b4e76d5a37fb952259fec411788e9f03218fdd998ee74cfd287
[INFO] running `Command { std: "docker" "start" "-a" "8c099fa3d5227b4e76d5a37fb952259fec411788e9f03218fdd998ee74cfd287", kill_on_drop: false }`
[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] [stderr] warning: unused variable: `yaml_fields`
[INFO] [stderr]    --> src/derive.rs:114:6
[INFO] [stderr]     |
[INFO] [stderr] 114 |     let yaml_fields = fields.iter().map(FieldData::to_yaml_generator);
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yaml_fields`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `json_fields`
[INFO] [stderr]    --> src/derive.rs:115:6
[INFO] [stderr]     |
[INFO] [stderr] 115 |     let json_fields = fields.iter().map(FieldData::to_json_generator);
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_json_fields`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `variant_idents`
[INFO] [stderr]    --> src/derive.rs:160:6
[INFO] [stderr]     |
[INFO] [stderr] 160 |     let variant_idents = data.variants.iter().map(|variant| &variant.ident).collect::<Vec<_>>();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_idents`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `variant_strings`
[INFO] [stderr]    --> src/derive.rs:161:6
[INFO] [stderr]     |
[INFO] [stderr] 161 |     let variant_strings =
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_strings`
[INFO] [stderr] 
[INFO] [stderr] warning: `sample-config-macros` (lib) generated 4 warnings (run `cargo fix --lib -p sample-config-macros` to apply 4 suggestions)
[INFO] [stderr] warning: `sample-config-macros` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sample_config_macros-2f045dc95d6445fe)
[INFO] [stderr]    Doc-tests sample_config_macros
[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" "8c099fa3d5227b4e76d5a37fb952259fec411788e9f03218fdd998ee74cfd287", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c099fa3d5227b4e76d5a37fb952259fec411788e9f03218fdd998ee74cfd287", kill_on_drop: false }`
[INFO] [stdout] 8c099fa3d5227b4e76d5a37fb952259fec411788e9f03218fdd998ee74cfd287
