[INFO] fetching crate extendr-engine 0.8.1...
[INFO] testing extendr-engine-0.8.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate extendr-engine 0.8.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate extendr-engine 0.8.1
[INFO] finished tweaking crates.io crate extendr-engine 0.8.1
[INFO] tweaked toml for crates.io crate extendr-engine 0.8.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate extendr-engine 0.8.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate extendr-engine 0.8.1 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f39ac0ab25962f274c369c6d4cc514fd0f8d81b13ff7f8b54b975e44342c99f7
[INFO] running `Command { std: "docker" "start" "-a" "f39ac0ab25962f274c369c6d4cc514fd0f8d81b13ff7f8b54b975e44342c99f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f39ac0ab25962f274c369c6d4cc514fd0f8d81b13ff7f8b54b975e44342c99f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f39ac0ab25962f274c369c6d4cc514fd0f8d81b13ff7f8b54b975e44342c99f7", kill_on_drop: false }`
[INFO] [stdout] f39ac0ab25962f274c369c6d4cc514fd0f8d81b13ff7f8b54b975e44342c99f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8ad21979d38dd554e8150a55b3768e2cf3d74a90a0f70e1fcb5e95c52d65a3d
[INFO] running `Command { std: "docker" "start" "-a" "d8ad21979d38dd554e8150a55b3768e2cf3d74a90a0f70e1fcb5e95c52d65a3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling extendr-ffi v0.8.1
[INFO] [stderr]    Compiling dtor-proc-macro v0.0.5
[INFO] [stderr]    Compiling ctor-proc-macro v0.0.5
[INFO] [stderr]    Compiling extendr-engine v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling dtor v0.0.6
[INFO] [stderr]    Compiling ctor v0.4.2
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `Command { std: "docker" "inspect" "d8ad21979d38dd554e8150a55b3768e2cf3d74a90a0f70e1fcb5e95c52d65a3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8ad21979d38dd554e8150a55b3768e2cf3d74a90a0f70e1fcb5e95c52d65a3d", kill_on_drop: false }`
[INFO] [stdout] d8ad21979d38dd554e8150a55b3768e2cf3d74a90a0f70e1fcb5e95c52d65a3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87a43905db03a50c0e7e55418075f320e399e110e46882f02a7b1f3c85975d96
[INFO] running `Command { std: "docker" "start" "-a" "87a43905db03a50c0e7e55418075f320e399e110e46882f02a7b1f3c85975d96", kill_on_drop: false }`
[INFO] [stderr]    Compiling extendr-engine v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "87a43905db03a50c0e7e55418075f320e399e110e46882f02a7b1f3c85975d96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87a43905db03a50c0e7e55418075f320e399e110e46882f02a7b1f3c85975d96", kill_on_drop: false }`
[INFO] [stdout] 87a43905db03a50c0e7e55418075f320e399e110e46882f02a7b1f3c85975d96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0204d3c033eadde6b9b1f8b52e39f06c08294faa1f95bee477048d72538960da
[INFO] running `Command { std: "docker" "start" "-a" "0204d3c033eadde6b9b1f8b52e39f06c08294faa1f95bee477048d72538960da", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/extendr_engine-1213caa4e54d1368)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_engine ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.49s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests extendr_engine
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 30) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 19) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0204d3c033eadde6b9b1f8b52e39f06c08294faa1f95bee477048d72538960da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0204d3c033eadde6b9b1f8b52e39f06c08294faa1f95bee477048d72538960da", kill_on_drop: false }`
[INFO] [stdout] 0204d3c033eadde6b9b1f8b52e39f06c08294faa1f95bee477048d72538960da