[INFO] fetching crate syn-serde 0.3.2...
[INFO] testing syn-serde-0.3.2 against 1.95.0 for beta-1.96-2
[INFO] extracting crate syn-serde 0.3.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate syn-serde 0.3.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate syn-serde 0.3.2
[INFO] tweaked toml for crates.io crate syn-serde 0.3.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate syn-serde 0.3.2 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate syn-serde 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8d99f2fb4915c82415991c79c98fab575f22cdbf782c5309cc24a90cc0e7121
[INFO] running `Command { std: "docker" "start" "-a" "f8d99f2fb4915c82415991c79c98fab575f22cdbf782c5309cc24a90cc0e7121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8d99f2fb4915c82415991c79c98fab575f22cdbf782c5309cc24a90cc0e7121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8d99f2fb4915c82415991c79c98fab575f22cdbf782c5309cc24a90cc0e7121", kill_on_drop: false }`
[INFO] [stdout] f8d99f2fb4915c82415991c79c98fab575f22cdbf782c5309cc24a90cc0e7121
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 801ec198957a3392689302b3e196326dd1053452e707d94759b41c0aed85c7db
[INFO] running `Command { std: "docker" "start" "-a" "801ec198957a3392689302b3e196326dd1053452e707d94759b41c0aed85c7db", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling syn-serde v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.99s
[INFO] running `Command { std: "docker" "inspect" "801ec198957a3392689302b3e196326dd1053452e707d94759b41c0aed85c7db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "801ec198957a3392689302b3e196326dd1053452e707d94759b41c0aed85c7db", kill_on_drop: false }`
[INFO] [stdout] 801ec198957a3392689302b3e196326dd1053452e707d94759b41c0aed85c7db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f4aac1a7fca73b58fc1c34dc65375c0c16a2c34a32df03a3c4967b4fe6a0235
[INFO] running `Command { std: "docker" "start" "-a" "5f4aac1a7fca73b58fc1c34dc65375c0c16a2c34a32df03a3c4967b4fe6a0235", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling syn-serde v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find `json` in `syn_serde`
[INFO] [stdout]    --> tests/test_item.rs:8:47
[INFO] [stdout]     |
[INFO] [stdout]   8 |     println!("actual:\n```\n{}\n", syn_serde::json::to_string_pretty(actual));
[INFO] [stdout]     |                                               ^^^^ could not find `json` in `syn_serde`
[INFO] [stdout]     |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]    --> src/lib.rs:272:9
[INFO] [stdout]     |
[INFO] [stdout] 271 | #[cfg(feature = "json")]
[INFO] [stdout]     |       ---------------- the item is gated behind the `json` feature
[INFO] [stdout] 272 | pub mod json;
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syn-serde` (test "test_item") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "5f4aac1a7fca73b58fc1c34dc65375c0c16a2c34a32df03a3c4967b4fe6a0235", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f4aac1a7fca73b58fc1c34dc65375c0c16a2c34a32df03a3c4967b4fe6a0235", kill_on_drop: false }`
[INFO] [stdout] 5f4aac1a7fca73b58fc1c34dc65375c0c16a2c34a32df03a3c4967b4fe6a0235
