[INFO] fetching crate revolt_optional_struct 0.2.0...
[INFO] testing revolt_optional_struct-0.2.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate revolt_optional_struct 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate revolt_optional_struct 0.2.0
[INFO] finished tweaking crates.io crate revolt_optional_struct 0.2.0
[INFO] tweaked toml for crates.io crate revolt_optional_struct 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate revolt_optional_struct 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 15 packages to latest compatible versions
[INFO] [stderr]       Adding quote v0.3.15 (available: v1.0.45)
[INFO] [stderr]       Adding syn v0.11.11 (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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebc8d3a94c661f401db6733ec98bc7462699826daef7676d281d7e4e7930641b
[INFO] running `Command { std: "docker" "start" "-a" "ebc8d3a94c661f401db6733ec98bc7462699826daef7676d281d7e4e7930641b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebc8d3a94c661f401db6733ec98bc7462699826daef7676d281d7e4e7930641b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc8d3a94c661f401db6733ec98bc7462699826daef7676d281d7e4e7930641b", kill_on_drop: false }`
[INFO] [stdout] ebc8d3a94c661f401db6733ec98bc7462699826daef7676d281d7e4e7930641b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f64234c33158bbdc776569b6944099e9a9fefc3de7ae2f160d227773e40634b
[INFO] running `Command { std: "docker" "start" "-a" "0f64234c33158bbdc776569b6944099e9a9fefc3de7ae2f160d227773e40634b", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling revolt_optional_struct v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "0f64234c33158bbdc776569b6944099e9a9fefc3de7ae2f160d227773e40634b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f64234c33158bbdc776569b6944099e9a9fefc3de7ae2f160d227773e40634b", kill_on_drop: false }`
[INFO] [stdout] 0f64234c33158bbdc776569b6944099e9a9fefc3de7ae2f160d227773e40634b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30cd4c3019f690051a38d93bb2cd9d9a900c1807681c2d152e8f65413f81472f
[INFO] running `Command { std: "docker" "start" "-a" "30cd4c3019f690051a38d93bb2cd9d9a900c1807681c2d152e8f65413f81472f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling revolt_optional_struct v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stdout] error[E0463]: can't find crate for `optional_struct`
[INFO] [stdout]  --> tests/serde.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate optional_struct;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `optional_struct`
[INFO] [stdout]  --> tests/derive.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate optional_struct;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `optional_struct`
[INFO] [stdout]  --> tests/simple.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate optional_struct;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `optional_struct`
[INFO] [stdout]  --> tests/renamed.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate optional_struct;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `optional_struct`
[INFO] [stdout]  --> tests/simple_no_overrides.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate optional_struct;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `optional_struct`
[INFO] [stdout]  --> tests/nested.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate optional_struct;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `optional_struct`
[INFO] [stdout]  --> tests/empty.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate optional_struct;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `optional_struct`
[INFO] [stdout]  --> tests/generics.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate optional_struct;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `revolt_optional_struct` (test "renamed") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `revolt_optional_struct` (test "derive") due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `revolt_optional_struct` (test "empty") due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `revolt_optional_struct` (test "simple_no_overrides") due to 1 previous error
[INFO] [stderr] error: could not compile `revolt_optional_struct` (test "simple") due to 1 previous error
[INFO] [stderr] error: could not compile `revolt_optional_struct` (test "nested") due to 1 previous error
[INFO] [stderr] error: could not compile `revolt_optional_struct` (test "serde") due to 1 previous error
[INFO] [stderr] error: could not compile `revolt_optional_struct` (test "generics") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "30cd4c3019f690051a38d93bb2cd9d9a900c1807681c2d152e8f65413f81472f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30cd4c3019f690051a38d93bb2cd9d9a900c1807681c2d152e8f65413f81472f", kill_on_drop: false }`
[INFO] [stdout] 30cd4c3019f690051a38d93bb2cd9d9a900c1807681c2d152e8f65413f81472f
