[INFO] fetching crate square-ox-derive 0.1.0...
[INFO] testing square-ox-derive-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate square-ox-derive 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate square-ox-derive 0.1.0
[INFO] finished tweaking crates.io crate square-ox-derive 0.1.0
[INFO] tweaked toml for crates.io crate square-ox-derive 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate square-ox-derive 0.1.0 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 169 packages to latest compatible versions
[INFO] [stderr]       Adding square-ox v0.1.2 (available: v0.2.0)
[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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ce0267d98028575da0d7a56b148bdab2e4b50c910efc5e01e9be9719730a516
[INFO] running `Command { std: "docker" "start" "-a" "3ce0267d98028575da0d7a56b148bdab2e4b50c910efc5e01e9be9719730a516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ce0267d98028575da0d7a56b148bdab2e4b50c910efc5e01e9be9719730a516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ce0267d98028575da0d7a56b148bdab2e4b50c910efc5e01e9be9719730a516", kill_on_drop: false }`
[INFO] [stdout] 3ce0267d98028575da0d7a56b148bdab2e4b50c910efc5e01e9be9719730a516
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c8541471df22e8eaded91898b31ea7c7fa378f55d213aa8a2854be7e7093ea1
[INFO] running `Command { std: "docker" "start" "-a" "6c8541471df22e8eaded91898b31ea7c7fa378f55d213aa8a2854be7e7093ea1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling square-ox-derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `DataStruct`, `Data`, and `Fields`
[INFO] [stdout]  --> src/lib.rs:3:43
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{parse_macro_input, DeriveInput, Data, Fields, Ident, Type, Field, LitStr, DataStruct, PathArguments, GenericArgument};
[INFO] [stdout]   |                                           ^^^^  ^^^^^^                              ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `str`
[INFO] [stdout]  --> src/lib.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::__private::{str, TokenStream2};
[INFO] [stdout]   |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::parse::ParseStream`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use syn::parse::ParseStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.97s
[INFO] running `Command { std: "docker" "inspect" "6c8541471df22e8eaded91898b31ea7c7fa378f55d213aa8a2854be7e7093ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c8541471df22e8eaded91898b31ea7c7fa378f55d213aa8a2854be7e7093ea1", kill_on_drop: false }`
[INFO] [stdout] 6c8541471df22e8eaded91898b31ea7c7fa378f55d213aa8a2854be7e7093ea1
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f2ad4c437656f88036d355e62ac5244d8be246b9c7a56a1564fee903ab3cd4e
[INFO] running `Command { std: "docker" "start" "-a" "3f2ad4c437656f88036d355e62ac5244d8be246b9c7a56a1564fee903ab3cd4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.61
[INFO] [stderr]    Compiling openssl v0.10.78
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling socket2 v0.6.3
[INFO] [stderr]    Compiling mio v1.2.0
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling tokio v1.52.1
[INFO] [stderr]    Compiling openssl-sys v0.9.114
[INFO] [stderr]    Compiling native-tls v0.2.18
[INFO] [stderr]    Compiling square-ox-derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `DataStruct`, `Data`, and `Fields`
[INFO] [stdout]  --> src/lib.rs:3:43
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{parse_macro_input, DeriveInput, Data, Fields, Ident, Type, Field, LitStr, DataStruct, PathArguments, GenericArgument};
[INFO] [stdout]   |                                           ^^^^  ^^^^^^                              ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `str`
[INFO] [stdout]  --> src/lib.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::__private::{str, TokenStream2};
[INFO] [stdout]   |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::parse::ParseStream`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use syn::parse::ParseStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling h2 v0.3.27
[INFO] [stderr]    Compiling zerofrom v0.1.7
[INFO] [stderr]    Compiling yoke v0.8.2
[INFO] [stderr]    Compiling zerovec v0.11.6
[INFO] [stderr]    Compiling zerotrie v0.2.4
[INFO] [stderr]    Compiling tinystr v0.8.3
[INFO] [stderr]    Compiling potential_utf v0.1.5
[INFO] [stderr]    Compiling icu_collections v2.2.0
[INFO] [stderr]    Compiling icu_locale_core v2.2.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling icu_provider v2.2.0
[INFO] [stderr]    Compiling icu_normalizer v2.2.0
[INFO] [stderr]    Compiling icu_properties v2.2.0
[INFO] [stderr]    Compiling hyper v0.14.32
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling url v2.5.8
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.27
[INFO] [stderr]    Compiling square-ox v0.1.2
[INFO] [stdout] warning: unused imports: `DataStruct`, `Data`, and `Fields`
[INFO] [stdout]  --> src/lib.rs:3:43
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{parse_macro_input, DeriveInput, Data, Fields, Ident, Type, Field, LitStr, DataStruct, PathArguments, GenericArgument};
[INFO] [stdout]   |                                           ^^^^  ^^^^^^                              ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `str`
[INFO] [stdout]  --> src/lib.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::__private::{str, TokenStream2};
[INFO] [stdout]   |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::parse::ParseStream`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use syn::parse::ParseStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find `builder` in `crate`
[INFO] [stdout]   --> tests/integration.rs:22:37
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub trait BackIntoBuilder<T: crate::builder::Validate, U: ParentBuilder + BackIntoBuilder<T, U>> {
[INFO] [stdout]    |                                     ^^^^^^^ could not find `builder` in the crate root
[INFO] [stdout]    |
[INFO] [stdout] help: a struct with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 22 - pub trait BackIntoBuilder<T: crate::builder::Validate, U: ParentBuilder + BackIntoBuilder<T, U>> {
[INFO] [stdout] 22 + pub trait BackIntoBuilder<T: crate::Builder::Validate, U: ParentBuilder + BackIntoBuilder<T, U>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find `builder` in `crate`
[INFO] [stdout]    --> tests/integration.rs:102:14
[INFO] [stdout]     |
[INFO] [stdout] 102 |     #[derive(Builder)]
[INFO] [stdout]     |              ^^^^^^^ could not find `builder` in the crate root
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Builder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find `errors` in `crate`
[INFO] [stdout]    --> tests/integration.rs:102:14
[INFO] [stdout]     |
[INFO] [stdout] 102 |     #[derive(Builder)]
[INFO] [stdout]     |              ^^^^^^^ could not find `errors` in the crate root
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Builder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `square-ox-derive` (test "integration") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "3f2ad4c437656f88036d355e62ac5244d8be246b9c7a56a1564fee903ab3cd4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f2ad4c437656f88036d355e62ac5244d8be246b9c7a56a1564fee903ab3cd4e", kill_on_drop: false }`
[INFO] [stdout] 3f2ad4c437656f88036d355e62ac5244d8be246b9c7a56a1564fee903ab3cd4e
