[INFO] fetching crate generic-cursors 0.0.3...
[INFO] testing generic-cursors-0.0.3 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate generic-cursors 0.0.3 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate generic-cursors 0.0.3
[INFO] finished tweaking crates.io crate generic-cursors 0.0.3
[INFO] tweaked toml for crates.io crate generic-cursors 0.0.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate generic-cursors 0.0.3 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate generic-cursors 0.0.3 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f25da9f618f4e521a3fac0e4db763d7522baa463565ff46c6191a3d91faeffef
[INFO] running `Command { std: "docker" "start" "-a" "f25da9f618f4e521a3fac0e4db763d7522baa463565ff46c6191a3d91faeffef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f25da9f618f4e521a3fac0e4db763d7522baa463565ff46c6191a3d91faeffef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f25da9f618f4e521a3fac0e4db763d7522baa463565ff46c6191a3d91faeffef", kill_on_drop: false }`
[INFO] [stdout] f25da9f618f4e521a3fac0e4db763d7522baa463565ff46c6191a3d91faeffef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8178768b887839c05b8236b7c6a77c5fc989580d5b3978d9e8e09245d2b1c3bd
[INFO] running `Command { std: "docker" "start" "-a" "8178768b887839c05b8236b7c6a77c5fc989580d5b3978d9e8e09245d2b1c3bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-cursors v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "8178768b887839c05b8236b7c6a77c5fc989580d5b3978d9e8e09245d2b1c3bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8178768b887839c05b8236b7c6a77c5fc989580d5b3978d9e8e09245d2b1c3bd", kill_on_drop: false }`
[INFO] [stdout] 8178768b887839c05b8236b7c6a77c5fc989580d5b3978d9e8e09245d2b1c3bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3ba441f2656a5018716072b66925a3066c992c06d0254b26da7eb035b509e8d
[INFO] running `Command { std: "docker" "start" "-a" "b3ba441f2656a5018716072b66925a3066c992c06d0254b26da7eb035b509e8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-cursors v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `insert_next` is never used
[INFO] [stdout]   --> examples/cyclic_sync.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T> CyclicDataStructure<T> {
[INFO] [stdout]    | ------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn insert_next(&mut self, new_next: Arc<Mutex<Self>>) -> Option<Arc<Mutex<Self>>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "b3ba441f2656a5018716072b66925a3066c992c06d0254b26da7eb035b509e8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3ba441f2656a5018716072b66925a3066c992c06d0254b26da7eb035b509e8d", kill_on_drop: false }`
[INFO] [stdout] b3ba441f2656a5018716072b66925a3066c992c06d0254b26da7eb035b509e8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 69f0e0bb4523fde421bdf810d2d20e6a7ba8c1c9d16dd5e983139f05195b1241
[INFO] running `Command { std: "docker" "start" "-a" "69f0e0bb4523fde421bdf810d2d20e6a7ba8c1c9d16dd5e983139f05195b1241", kill_on_drop: false }`
[INFO] [stderr] warning: method `insert_next` is never used
[INFO] [stderr]   --> examples/cyclic_sync.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl<T> CyclicDataStructure<T> {
[INFO] [stderr]    | ------------------------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 15 |     fn insert_next(&mut self, new_next: Arc<Mutex<Self>>) -> Option<Arc<Mutex<Self>>> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `generic-cursors` (example "cyclic_sync") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/generic_cursors-e49d1dd3d1a3a34b)
[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 generic_cursors
[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" "69f0e0bb4523fde421bdf810d2d20e6a7ba8c1c9d16dd5e983139f05195b1241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69f0e0bb4523fde421bdf810d2d20e6a7ba8c1c9d16dd5e983139f05195b1241", kill_on_drop: false }`
[INFO] [stdout] 69f0e0bb4523fde421bdf810d2d20e6a7ba8c1c9d16dd5e983139f05195b1241