[INFO] fetching crate test-engine 0.1.0...
[INFO] testing test-engine-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate test-engine 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate test-engine 0.1.0
[INFO] finished tweaking crates.io crate test-engine 0.1.0
[INFO] tweaked toml for crates.io crate test-engine 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate test-engine 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] crate crates.io crate test-engine 0.1.0 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-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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5211abc46f3b94f3afc43889894119c5b0c6f2effa36326e7e2e32abed62c4af
[INFO] running `Command { std: "docker" "start" "-a" "5211abc46f3b94f3afc43889894119c5b0c6f2effa36326e7e2e32abed62c4af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5211abc46f3b94f3afc43889894119c5b0c6f2effa36326e7e2e32abed62c4af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5211abc46f3b94f3afc43889894119c5b0c6f2effa36326e7e2e32abed62c4af", kill_on_drop: false }`
[INFO] [stdout] 5211abc46f3b94f3afc43889894119c5b0c6f2effa36326e7e2e32abed62c4af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8a74e060bd4faa12113a9348af20dba101657be0bf3f6c939ef60a94ff6ee408
[INFO] running `Command { std: "docker" "start" "-a" "8a74e060bd4faa12113a9348af20dba101657be0bf3f6c939ef60a94ff6ee408", kill_on_drop: false }`
[INFO] [stderr]    Compiling test-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "8a74e060bd4faa12113a9348af20dba101657be0bf3f6c939ef60a94ff6ee408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a74e060bd4faa12113a9348af20dba101657be0bf3f6c939ef60a94ff6ee408", kill_on_drop: false }`
[INFO] [stdout] 8a74e060bd4faa12113a9348af20dba101657be0bf3f6c939ef60a94ff6ee408
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 9334c1335bc09d7b8fec30cfec9f61869a701748df0385a340b4aea24667d7a4
[INFO] running `Command { std: "docker" "start" "-a" "9334c1335bc09d7b8fec30cfec9f61869a701748df0385a340b4aea24667d7a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling test-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "9334c1335bc09d7b8fec30cfec9f61869a701748df0385a340b4aea24667d7a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9334c1335bc09d7b8fec30cfec9f61869a701748df0385a340b4aea24667d7a4", kill_on_drop: false }`
[INFO] [stdout] 9334c1335bc09d7b8fec30cfec9f61869a701748df0385a340b4aea24667d7a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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", kill_on_drop: false }`
[INFO] [stdout] 5a54adb638dda6909d182e7896fb38dfed99a20a2e3b3474961df3f58285f2e1
[INFO] running `Command { std: "docker" "start" "-a" "5a54adb638dda6909d182e7896fb38dfed99a20a2e3b3474961df3f58285f2e1", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/test_engine-ee2d02897771d797)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5a54adb638dda6909d182e7896fb38dfed99a20a2e3b3474961df3f58285f2e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a54adb638dda6909d182e7896fb38dfed99a20a2e3b3474961df3f58285f2e1", kill_on_drop: false }`
[INFO] [stdout] 5a54adb638dda6909d182e7896fb38dfed99a20a2e3b3474961df3f58285f2e1
