[INFO] fetching crate broker-tokio 0.2.16...
[INFO] checking broker-tokio-0.2.16 against master#212aa3ea28d91a97d1e1261709c0b6e6790788e6 for pr-69340
[INFO] extracting crate broker-tokio 0.2.16 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate broker-tokio 0.2.16 on toolchain 212aa3ea28d91a97d1e1261709c0b6e6790788e6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+212aa3ea28d91a97d1e1261709c0b6e6790788e6" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate broker-tokio 0.2.16
[INFO] finished tweaking crates.io crate broker-tokio 0.2.16
[INFO] tweaked toml for crates.io crate broker-tokio 0.2.16 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+212aa3ea28d91a97d1e1261709c0b6e6790788e6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+212aa3ea28d91a97d1e1261709c0b6e6790788e6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+212aa3ea28d91a97d1e1261709c0b6e6790788e6" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 75fd79ab6e6ec6bf5e16bca02ddb18f172c22f50200eab114d714471fbd87db2
[INFO] running `"docker" "start" "-a" "75fd79ab6e6ec6bf5e16bca02ddb18f172c22f50200eab114d714471fbd87db2"`
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking tokio v0.2.11
[INFO] [stderr]     Checking broker-tokio v0.2.16 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling generator v0.6.20
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking proptest v0.9.5
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking tokio-test v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking loom v0.2.14
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr] warning: function is never used: `backoff`
[INFO] [stderr]  --> src/tests/backoff.rs:7:15
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub(crate) fn backoff(n: usize) -> impl Future<Output = ()> {
[INFO] [stderr]   |               ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `backoff_clone`
[INFO] [stderr]   --> src/tests/backoff.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub(crate) fn backoff_clone(n: usize) -> impl Future<Output = ()> {
[INFO] [stderr]    |               ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `track_drop`
[INFO] [stderr]   --> src/tests/track_drop.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub(crate) fn track_drop<T: Future>(
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_ref`
[INFO] [stderr]   --> src/tests/track_drop.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub(crate) fn get_ref(&self) -> &T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `did_drop_future`
[INFO] [stderr]   --> src/tests/track_drop.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     pub(crate) fn did_drop_future(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `did_drop_output`
[INFO] [stderr]   --> src/tests/track_drop.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub(crate) fn did_drop_output(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.30s
[INFO] running `"docker" "inspect" "75fd79ab6e6ec6bf5e16bca02ddb18f172c22f50200eab114d714471fbd87db2"`
[INFO] running `"docker" "rm" "-f" "75fd79ab6e6ec6bf5e16bca02ddb18f172c22f50200eab114d714471fbd87db2"`
[INFO] [stdout] 75fd79ab6e6ec6bf5e16bca02ddb18f172c22f50200eab114d714471fbd87db2