[INFO] fetching crate double_decker 0.0.3...
[INFO] testing double_decker-0.0.3 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate double_decker 0.0.3 into /workspace/builds/worker-31/source
[INFO] validating manifest of crates.io crate double_decker 0.0.3 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-31/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52bafdae6c4fd2527fa393d3381a3551ae5783ce821108e829b5c2b8f981fe74
[INFO] running `Command { std: "docker" "start" "-a" "52bafdae6c4fd2527fa393d3381a3551ae5783ce821108e829b5c2b8f981fe74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52bafdae6c4fd2527fa393d3381a3551ae5783ce821108e829b5c2b8f981fe74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52bafdae6c4fd2527fa393d3381a3551ae5783ce821108e829b5c2b8f981fe74", kill_on_drop: false }`
[INFO] [stdout] 52bafdae6c4fd2527fa393d3381a3551ae5783ce821108e829b5c2b8f981fe74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c4a80579bdca01cba66fefe5143b5df38d199aae273a9a540c20589b68d28f4
[INFO] running `Command { std: "docker" "start" "-a" "3c4a80579bdca01cba66fefe5143b5df38d199aae273a9a540c20589b68d28f4", 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 crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[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 4.66s
[INFO] running `Command { std: "docker" "inspect" "3c4a80579bdca01cba66fefe5143b5df38d199aae273a9a540c20589b68d28f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c4a80579bdca01cba66fefe5143b5df38d199aae273a9a540c20589b68d28f4", kill_on_drop: false }`
[INFO] [stdout] 3c4a80579bdca01cba66fefe5143b5df38d199aae273a9a540c20589b68d28f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a9dc444b2552ccba524cce4c3310ff263e3184549f06d18119bd8e33ffb46e0
[INFO] running `Command { std: "docker" "start" "-a" "8a9dc444b2552ccba524cce4c3310ff263e3184549f06d18119bd8e33ffb46e0", kill_on_drop: false }`
[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] [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 0.79s
[INFO] running `Command { std: "docker" "inspect" "8a9dc444b2552ccba524cce4c3310ff263e3184549f06d18119bd8e33ffb46e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a9dc444b2552ccba524cce4c3310ff263e3184549f06d18119bd8e33ffb46e0", kill_on_drop: false }`
[INFO] [stdout] 8a9dc444b2552ccba524cce4c3310ff263e3184549f06d18119bd8e33ffb46e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 050c7d29378841afdca4f8a6d7e88536ea098a2ba7f1ef6d39ca84fc3db3baa9
[INFO] running `Command { std: "docker" "start" "-a" "050c7d29378841afdca4f8a6d7e88536ea098a2ba7f1ef6d39ca84fc3db3baa9", 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 0.07s
[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 0.02s
[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_handles_leaves ... ok
[INFO] [stdout] test it_fails_when_empty ... ok
[INFO] [stdout] test it_recvs_after_close ... ok
[INFO] [stdout] test it_detects_closure ... ok
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] test it_runs_blocked_reads ... ok
[INFO] [stdout] test it_can_count_to_10000 ... ok
[INFO] [stdout] test it_iterates ... 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 3.61s
[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 47) ... ok
[INFO] [stdout] test src/lib.rs - (line 80) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "050c7d29378841afdca4f8a6d7e88536ea098a2ba7f1ef6d39ca84fc3db3baa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "050c7d29378841afdca4f8a6d7e88536ea098a2ba7f1ef6d39ca84fc3db3baa9", kill_on_drop: false }`
[INFO] [stdout] 050c7d29378841afdca4f8a6d7e88536ea098a2ba7f1ef6d39ca84fc3db3baa9