[INFO] fetching crate placeholder_closure 0.1.0...
[INFO] testing placeholder_closure-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate placeholder_closure 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate placeholder_closure 0.1.0
[INFO] finished tweaking crates.io crate placeholder_closure 0.1.0
[INFO] tweaked toml for crates.io crate placeholder_closure 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate placeholder_closure 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 placeholder_closure 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 15ceac79cb77a2eb735b646a56c7cbc492b19d3198fc6d272371dbe3c2006c2e
[INFO] running `Command { std: "docker" "start" "-a" "15ceac79cb77a2eb735b646a56c7cbc492b19d3198fc6d272371dbe3c2006c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15ceac79cb77a2eb735b646a56c7cbc492b19d3198fc6d272371dbe3c2006c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15ceac79cb77a2eb735b646a56c7cbc492b19d3198fc6d272371dbe3c2006c2e", kill_on_drop: false }`
[INFO] [stdout] 15ceac79cb77a2eb735b646a56c7cbc492b19d3198fc6d272371dbe3c2006c2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2be19f6373fa76c5742b3c725a5b76e9c975f4fa8ac4ec295295fb7daf073506
[INFO] running `Command { std: "docker" "start" "-a" "2be19f6373fa76c5742b3c725a5b76e9c975f4fa8ac4ec295295fb7daf073506", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling placeholder_closure v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.02s
[INFO] running `Command { std: "docker" "inspect" "2be19f6373fa76c5742b3c725a5b76e9c975f4fa8ac4ec295295fb7daf073506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2be19f6373fa76c5742b3c725a5b76e9c975f4fa8ac4ec295295fb7daf073506", kill_on_drop: false }`
[INFO] [stdout] 2be19f6373fa76c5742b3c725a5b76e9c975f4fa8ac4ec295295fb7daf073506
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 565d2bc5a40469858ad0799e55d521fd05e02898ab9c7191d1ae66a09f54659f
[INFO] running `Command { std: "docker" "start" "-a" "565d2bc5a40469858ad0799e55d521fd05e02898ab9c7191d1ae66a09f54659f", kill_on_drop: false }`
[INFO] [stderr]    Compiling placeholder_closure v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "565d2bc5a40469858ad0799e55d521fd05e02898ab9c7191d1ae66a09f54659f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "565d2bc5a40469858ad0799e55d521fd05e02898ab9c7191d1ae66a09f54659f", kill_on_drop: false }`
[INFO] [stdout] 565d2bc5a40469858ad0799e55d521fd05e02898ab9c7191d1ae66a09f54659f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] e69df178f0f478d8c0464b17c11f34dbdd60b5f165eaafbf0d57e7298195ce30
[INFO] running `Command { std: "docker" "start" "-a" "e69df178f0f478d8c0464b17c11f34dbdd60b5f165eaafbf0d57e7298195ce30", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/placeholder_closure-0d8d7836a7c12d16)
[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] [stderr]    Doc-tests placeholder_closure
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 22) ... ok
[INFO] [stdout] test src/lib.rs - (line 32) ... ok
[INFO] [stdout] test src/lib.rs - (line 14) ... ok
[INFO] [stdout] test src/lib.rs - (line 3) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e69df178f0f478d8c0464b17c11f34dbdd60b5f165eaafbf0d57e7298195ce30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e69df178f0f478d8c0464b17c11f34dbdd60b5f165eaafbf0d57e7298195ce30", kill_on_drop: false }`
[INFO] [stdout] e69df178f0f478d8c0464b17c11f34dbdd60b5f165eaafbf0d57e7298195ce30
