[INFO] fetching crate double_decker 0.0.3...
[INFO] testing double_decker-0.0.3 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate double_decker 0.0.3 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate double_decker 0.0.3 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate double_decker 0.0.3
[INFO] finished tweaking crates.io crate double_decker 0.0.3
[INFO] tweaked toml for crates.io crate double_decker 0.0.3 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc1b312985b6dd9e7b91ff768bea6dda432d461a7aef6f68e80ace04acb45704
[INFO] running `Command { std: "docker" "start" "-a" "cc1b312985b6dd9e7b91ff768bea6dda432d461a7aef6f68e80ace04acb45704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc1b312985b6dd9e7b91ff768bea6dda432d461a7aef6f68e80ace04acb45704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc1b312985b6dd9e7b91ff768bea6dda432d461a7aef6f68e80ace04acb45704", kill_on_drop: false }`
[INFO] [stdout] cc1b312985b6dd9e7b91ff768bea6dda432d461a7aef6f68e80ace04acb45704
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae1b9e099f40e9475544030c9b1be95ba9bf2d29366670eccc85a9f0fcbd6948
[INFO] running `Command { std: "docker" "start" "-a" "ae1b9e099f40e9475544030c9b1be95ba9bf2d29366670eccc85a9f0fcbd6948", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling double_decker v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `terminate`
[INFO] [stdout]    --> src/lib.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     terminate: Arc<DropSignal>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.94s
[INFO] running `Command { std: "docker" "inspect" "ae1b9e099f40e9475544030c9b1be95ba9bf2d29366670eccc85a9f0fcbd6948", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae1b9e099f40e9475544030c9b1be95ba9bf2d29366670eccc85a9f0fcbd6948", kill_on_drop: false }`
[INFO] [stdout] ae1b9e099f40e9475544030c9b1be95ba9bf2d29366670eccc85a9f0fcbd6948
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f60607cd7c753bcf851af546c8e36360ae029d2714d68d3a30ec44b6b41a512
[INFO] running `Command { std: "docker" "start" "-a" "0f60607cd7c753bcf851af546c8e36360ae029d2714d68d3a30ec44b6b41a512", kill_on_drop: false }`
[INFO] [stdout] warning: field is never read: `terminate`
[INFO] [stdout]    --> src/lib.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     terminate: Arc<DropSignal>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling double_decker v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `terminate`
[INFO] [stdout]    --> src/lib.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     terminate: Arc<DropSignal>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "0f60607cd7c753bcf851af546c8e36360ae029d2714d68d3a30ec44b6b41a512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f60607cd7c753bcf851af546c8e36360ae029d2714d68d3a30ec44b6b41a512", kill_on_drop: false }`
[INFO] [stdout] 0f60607cd7c753bcf851af546c8e36360ae029d2714d68d3a30ec44b6b41a512
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f836b9a78399312b6cf59c7f7ede77930d5108cb723ae642e97322c4cfdde18b
[INFO] running `Command { std: "docker" "start" "-a" "f836b9a78399312b6cf59c7f7ede77930d5108cb723ae642e97322c4cfdde18b", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `terminate`
[INFO] [stderr]    --> src/lib.rs:223:5
[INFO] [stderr]     |
[INFO] [stderr] 223 |     terminate: Arc<DropSignal>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `double_decker` (lib) generated 1 warning
[INFO] [stderr] warning: `double_decker` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/double_decker-c649a510a41cb846)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::clone_subscription_without_dropping ... ok
[INFO] [stdout] test tests::subscribe_on_thread ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lib.rs (/opt/rustwide/target/debug/deps/lib-22fae32700712371)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test it_detects_closure ... ok
[INFO] [stdout] test it_handles_leaves ... ok
[INFO] [stdout] test it_recvs_after_close ... ok
[INFO] [stdout] test it_fails_when_empty ... ok
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] test it_runs_blocked_reads ... ok
[INFO] [stdout] test it_iterates ... ok
[INFO] [stdout] test it_can_count_to_10000 ... ok
[INFO] [stdout] test aggressive_iteration ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.21s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests double_decker
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 33) ... ok
[INFO] [stdout] test src/lib.rs - (line 80) ... ok
[INFO] [stdout] test src/lib.rs - (line 47) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.46s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f836b9a78399312b6cf59c7f7ede77930d5108cb723ae642e97322c4cfdde18b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f836b9a78399312b6cf59c7f7ede77930d5108cb723ae642e97322c4cfdde18b", kill_on_drop: false }`
[INFO] [stdout] f836b9a78399312b6cf59c7f7ede77930d5108cb723ae642e97322c4cfdde18b