[INFO] fetching crate serde_plugin 0.0.0...
[INFO] testing serde_plugin-0.0.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate serde_plugin 0.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate serde_plugin 0.0.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_plugin 0.0.0
[INFO] finished tweaking crates.io crate serde_plugin 0.0.0
[INFO] tweaked toml for crates.io crate serde_plugin 0.0.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3e594410218c7385e0f2e3ff3accb7ddd54677bfb03af03e7ce73db3dda460a
[INFO] running `Command { std: "docker" "start" "-a" "e3e594410218c7385e0f2e3ff3accb7ddd54677bfb03af03e7ce73db3dda460a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3e594410218c7385e0f2e3ff3accb7ddd54677bfb03af03e7ce73db3dda460a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3e594410218c7385e0f2e3ff3accb7ddd54677bfb03af03e7ce73db3dda460a", kill_on_drop: false }`
[INFO] [stdout] e3e594410218c7385e0f2e3ff3accb7ddd54677bfb03af03e7ce73db3dda460a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 611e09c11f617ec4934890749cb0484918b1a8b4c4944b99abc2eca48a7b980f
[INFO] running `Command { std: "docker" "start" "-a" "611e09c11f617ec4934890749cb0484918b1a8b4c4944b99abc2eca48a7b980f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_plugin v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected item, found `@`
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | @
[INFO] [stdout]   | ^ expected item
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_plugin`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "611e09c11f617ec4934890749cb0484918b1a8b4c4944b99abc2eca48a7b980f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "611e09c11f617ec4934890749cb0484918b1a8b4c4944b99abc2eca48a7b980f", kill_on_drop: false }`
[INFO] [stdout] 611e09c11f617ec4934890749cb0484918b1a8b4c4944b99abc2eca48a7b980f