[INFO] fetching crate preftool-derive-core 0.2.0...
[INFO] testing preftool-derive-core-0.2.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate preftool-derive-core 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate preftool-derive-core 0.2.0
[INFO] finished tweaking crates.io crate preftool-derive-core 0.2.0
[INFO] tweaked toml for crates.io crate preftool-derive-core 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate preftool-derive-core 0.2.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding darling v0.9.0 (available: v0.21.3)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (available: v1.0.103)
[INFO] [stderr]       Adding quote v0.6.13 (available: v1.0.41)
[INFO] [stderr]       Adding syn v0.15.44 (available: v2.0.108)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64a2b1256b0a0cd090fd45f0c15143b36045572b9d4f1abf27aef26c53dfdb72
[INFO] running `Command { std: "docker" "start" "-a" "64a2b1256b0a0cd090fd45f0c15143b36045572b9d4f1abf27aef26c53dfdb72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64a2b1256b0a0cd090fd45f0c15143b36045572b9d4f1abf27aef26c53dfdb72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64a2b1256b0a0cd090fd45f0c15143b36045572b9d4f1abf27aef26c53dfdb72", kill_on_drop: false }`
[INFO] [stdout] 64a2b1256b0a0cd090fd45f0c15143b36045572b9d4f1abf27aef26c53dfdb72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b245e209bfc8dab0325c7ff314d508a122d50a2da059c805d845dc7210877dd9
[INFO] running `Command { std: "docker" "start" "-a" "b245e209bfc8dab0325c7ff314d508a122d50a2da059c805d845dc7210877dd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling preftool-derive-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `attrs` is never read
[INFO] [stdout]   --> src/lib.rs:73:3
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct FieldOptions {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 73 |   attrs: Vec<syn::Attribute>,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ident` and `fields` are never read
[INFO] [stdout]    --> src/lib.rs:107:3
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct VariantOptions {
[INFO] [stdout]     |        -------------- fields in this struct
[INFO] [stdout] 107 |   ident: syn::Ident,
[INFO] [stdout]     |   ^^^^^
[INFO] [stdout] 108 |   fields: darling::ast::Fields<FieldOptions>,
[INFO] [stdout]     |   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VariantOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.32s
[INFO] running `Command { std: "docker" "inspect" "b245e209bfc8dab0325c7ff314d508a122d50a2da059c805d845dc7210877dd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b245e209bfc8dab0325c7ff314d508a122d50a2da059c805d845dc7210877dd9", kill_on_drop: false }`
[INFO] [stdout] b245e209bfc8dab0325c7ff314d508a122d50a2da059c805d845dc7210877dd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6287187dbbe26932fd3c1f3fec72a2eae7fee8508fffacbe7a4ee753c130e707
[INFO] running `Command { std: "docker" "start" "-a" "6287187dbbe26932fd3c1f3fec72a2eae7fee8508fffacbe7a4ee753c130e707", kill_on_drop: false }`
[INFO] [stdout] warning: field `attrs` is never read
[INFO] [stdout]   --> src/lib.rs:73:3
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct FieldOptions {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 73 |   attrs: Vec<syn::Attribute>,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ident` and `fields` are never read
[INFO] [stdout]    --> src/lib.rs:107:3
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct VariantOptions {
[INFO] [stdout]     |        -------------- fields in this struct
[INFO] [stdout] 107 |   ident: syn::Ident,
[INFO] [stdout]     |   ^^^^^
[INFO] [stdout] 108 |   fields: darling::ast::Fields<FieldOptions>,
[INFO] [stdout]     |   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VariantOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling preftool-derive-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `attrs` is never read
[INFO] [stdout]   --> src/lib.rs:73:3
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct FieldOptions {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 73 |   attrs: Vec<syn::Attribute>,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ident` and `fields` are never read
[INFO] [stdout]    --> src/lib.rs:107:3
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct VariantOptions {
[INFO] [stdout]     |        -------------- fields in this struct
[INFO] [stdout] 107 |   ident: syn::Ident,
[INFO] [stdout]     |   ^^^^^
[INFO] [stdout] 108 |   fields: darling::ast::Fields<FieldOptions>,
[INFO] [stdout]     |   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VariantOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "6287187dbbe26932fd3c1f3fec72a2eae7fee8508fffacbe7a4ee753c130e707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6287187dbbe26932fd3c1f3fec72a2eae7fee8508fffacbe7a4ee753c130e707", kill_on_drop: false }`
[INFO] [stdout] 6287187dbbe26932fd3c1f3fec72a2eae7fee8508fffacbe7a4ee753c130e707
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b34ece28a9c245c995f259464a518dfcef455bd6fdb58e83c281626f9b07d4d4
[INFO] running `Command { std: "docker" "start" "-a" "b34ece28a9c245c995f259464a518dfcef455bd6fdb58e83c281626f9b07d4d4", kill_on_drop: false }`
[INFO] [stderr] warning: field `attrs` is never read
[INFO] [stderr]   --> src/lib.rs:73:3
[INFO] [stderr]    |
[INFO] [stderr] 59 | struct FieldOptions {
[INFO] [stderr]    |        ------------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 73 |   attrs: Vec<syn::Attribute>,
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `FieldOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `ident` and `fields` are never read
[INFO] [stderr]    --> src/lib.rs:107:3
[INFO] [stderr]     |
[INFO] [stderr] 106 | struct VariantOptions {
[INFO] [stderr]     |        -------------- fields in this struct
[INFO] [stderr] 107 |   ident: syn::Ident,
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr] 108 |   fields: darling::ast::Fields<FieldOptions>,
[INFO] [stderr]     |   ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `VariantOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `preftool-derive-core` (lib) generated 2 warnings
[INFO] [stderr] warning: `preftool-derive-core` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/preftool_derive_core-78e28fcaf6e9c86e)
[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]    Doc-tests preftool_derive_core
[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" "b34ece28a9c245c995f259464a518dfcef455bd6fdb58e83c281626f9b07d4d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b34ece28a9c245c995f259464a518dfcef455bd6fdb58e83c281626f9b07d4d4", kill_on_drop: false }`
[INFO] [stdout] b34ece28a9c245c995f259464a518dfcef455bd6fdb58e83c281626f9b07d4d4
