[INFO] fetching crate n-observer 0.1.2...
[INFO] testing n-observer-0.1.2 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate n-observer 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate n-observer 0.1.2
[INFO] finished tweaking crates.io crate n-observer 0.1.2
[INFO] tweaked toml for crates.io crate n-observer 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate n-observer 0.1.2 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate n-observer 0.1.2 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b89d0ba057fde5e798a74191f8bc1e56897da82b6e8e5f9e81be2eda4ffa34ad
[INFO] running `Command { std: "docker" "start" "-a" "b89d0ba057fde5e798a74191f8bc1e56897da82b6e8e5f9e81be2eda4ffa34ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b89d0ba057fde5e798a74191f8bc1e56897da82b6e8e5f9e81be2eda4ffa34ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b89d0ba057fde5e798a74191f8bc1e56897da82b6e8e5f9e81be2eda4ffa34ad", kill_on_drop: false }`
[INFO] [stdout] b89d0ba057fde5e798a74191f8bc1e56897da82b6e8e5f9e81be2eda4ffa34ad
[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=forbid" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8904efc2ee53b167096ca8344310d40663eb7b16ae086ebcbeeeb631caeec95
[INFO] running `Command { std: "docker" "start" "-a" "a8904efc2ee53b167096ca8344310d40663eb7b16ae086ebcbeeeb631caeec95", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.104
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling rs-schema v1.0.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling rs-schema-derive-impl v0.1.0
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tokio v1.48.0
[INFO] [stderr]    Compiling rs-schema-derive v0.1.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling n-observer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.43s
[INFO] running `Command { std: "docker" "inspect" "a8904efc2ee53b167096ca8344310d40663eb7b16ae086ebcbeeeb631caeec95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8904efc2ee53b167096ca8344310d40663eb7b16ae086ebcbeeeb631caeec95", kill_on_drop: false }`
[INFO] [stdout] a8904efc2ee53b167096ca8344310d40663eb7b16ae086ebcbeeeb631caeec95
[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=forbid" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f2d3dcea98413b280e58b47edb38568c3f3404066eed3e19d515d4f075039f9
[INFO] running `Command { std: "docker" "start" "-a" "5f2d3dcea98413b280e58b47edb38568c3f3404066eed3e19d515d4f075039f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.178
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling sdd v3.0.10
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling serial_test_derive v3.2.0
[INFO] [stderr]    Compiling scc v2.4.0
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling serial_test v3.2.0
[INFO] [stderr]    Compiling n-observer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.39s
[INFO] running `Command { std: "docker" "inspect" "5f2d3dcea98413b280e58b47edb38568c3f3404066eed3e19d515d4f075039f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f2d3dcea98413b280e58b47edb38568c3f3404066eed3e19d515d4f075039f9", kill_on_drop: false }`
[INFO] [stdout] 5f2d3dcea98413b280e58b47edb38568c3f3404066eed3e19d515d4f075039f9
[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=forbid" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7fb80af23a8daf9503021b4f0eacd9fcaa3736fdf74da3ea6053eefbca1991c6
[INFO] running `Command { std: "docker" "start" "-a" "7fb80af23a8daf9503021b4f0eacd9fcaa3736fdf74da3ea6053eefbca1991c6", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/n_observer-ceef42e3466fa5ac)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test observer::tests::test_observer_multiple ... ok
[INFO] [stdout] test observer::tests::test_observer_initial_value ... ok
[INFO] [stdout] test observer::tests::test_observer_chain_middle_dropped ... ok
[INFO] [stdout] test observer::tests::test_observer_chained ... ok
[INFO] [stdout] test observer::tests::test_observer_single ... ok
[INFO] [stdout] test observer::tests::test_observer_multiple_publishers ... ok
[INFO] [stdout] test observer::tests::test_observer_single_multiple_pub ... ok
[INFO] [stdout] test observer::tests::test_observer_with_transform ... ok
[INFO] [stdout] test observer::tests::test_observer_transform_error_multiparent ... ok
[INFO] [stdout] test observer::tests::test_observer_transform_error_single ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/n_observer-0c778d6a626ebab6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests n_observer
[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] [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" "7fb80af23a8daf9503021b4f0eacd9fcaa3736fdf74da3ea6053eefbca1991c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fb80af23a8daf9503021b4f0eacd9fcaa3736fdf74da3ea6053eefbca1991c6", kill_on_drop: false }`
[INFO] [stdout] 7fb80af23a8daf9503021b4f0eacd9fcaa3736fdf74da3ea6053eefbca1991c6