[INFO] fetching crate nblock 0.3.0...
[INFO] testing nblock-0.3.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate nblock 0.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate nblock 0.3.0
[INFO] finished tweaking crates.io crate nblock 0.3.0
[INFO] tweaked toml for crates.io crate nblock 0.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nblock 0.3.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9207ffb4a949a0fa8557c2a6a8bec5aa0aa0f50d263cd4b822b74f8192a9bbe7
[INFO] running `Command { std: "docker" "start" "-a" "9207ffb4a949a0fa8557c2a6a8bec5aa0aa0f50d263cd4b822b74f8192a9bbe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9207ffb4a949a0fa8557c2a6a8bec5aa0aa0f50d263cd4b822b74f8192a9bbe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9207ffb4a949a0fa8557c2a6a8bec5aa0aa0f50d263cd4b822b74f8192a9bbe7", kill_on_drop: false }`
[INFO] [stdout] 9207ffb4a949a0fa8557c2a6a8bec5aa0aa0f50d263cd4b822b74f8192a9bbe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a4eac2df273f695e71208db6570ad6b1285d391e12af658eab98958cc0ec1b88
[INFO] running `Command { std: "docker" "start" "-a" "a4eac2df273f695e71208db6570ad6b1285d391e12af658eab98958cc0ec1b88", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling spinning_top v0.3.0
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling nblock v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.59s
[INFO] running `Command { std: "docker" "inspect" "a4eac2df273f695e71208db6570ad6b1285d391e12af658eab98958cc0ec1b88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4eac2df273f695e71208db6570ad6b1285d391e12af658eab98958cc0ec1b88", kill_on_drop: false }`
[INFO] [stdout] a4eac2df273f695e71208db6570ad6b1285d391e12af658eab98958cc0ec1b88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5c0199b78a040f40ce2b0e8695059ef9a19b0f2805ce6e34ff0bc0eb988adc56
[INFO] running `Command { std: "docker" "start" "-a" "5c0199b78a040f40ce2b0e8695059ef9a19b0f2805ce6e34ff0bc0eb988adc56", kill_on_drop: false }`
[INFO] [stderr]    Compiling nblock v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "5c0199b78a040f40ce2b0e8695059ef9a19b0f2805ce6e34ff0bc0eb988adc56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c0199b78a040f40ce2b0e8695059ef9a19b0f2805ce6e34ff0bc0eb988adc56", kill_on_drop: false }`
[INFO] [stdout] 5c0199b78a040f40ce2b0e8695059ef9a19b0f2805ce6e34ff0bc0eb988adc56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 225a7634105d96a33058d1f9c870fb0acd987333b2128a2ac07419ee055513ed
[INFO] running `Command { std: "docker" "start" "-a" "225a7634105d96a33058d1f9c870fb0acd987333b2128a2ac07419ee055513ed", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nblock-96b9a7ecd37d1bdf)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running tests/idle.rs (/opt/rustwide/target/debug/deps/idle-15714ce4a5b742a2)
[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 2 tests
[INFO] [stdout] test test_single_task_not_idling ... ok
[INFO] [stdout] test test_spawned_task_idle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/join.rs (/opt/rustwide/target/debug/deps/join-8d6a7625cb3d8212)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_join_handle_try_take ... ok
[INFO] [stdout] test test_join_handle_join ... ok
[INFO] [stdout] test test_join_handle_on_complete_from_caller_thread ... ok
[INFO] [stdout] test test_join_handle_on_complete_from_task_thread ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/task_management.rs (/opt/rustwide/target/debug/deps/task_management-99cef49d8cb1cd65)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_active_task_count ... ok
[INFO] [stdout] test test_panic_decrements_active_task_count ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.19s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nblock
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 76) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] test src/lib.rs - (line 122) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.20s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "225a7634105d96a33058d1f9c870fb0acd987333b2128a2ac07419ee055513ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "225a7634105d96a33058d1f9c870fb0acd987333b2128a2ac07419ee055513ed", kill_on_drop: false }`
[INFO] [stdout] 225a7634105d96a33058d1f9c870fb0acd987333b2128a2ac07419ee055513ed