[INFO] fetching crate sender-sink 0.2.1... [INFO] testing sender-sink-0.2.1 against 1.91.0 for beta-1.92-2 [INFO] extracting crate sender-sink 0.2.1 into /workspace/builds/worker-7-tc1/source [INFO] started tweaking crates.io crate sender-sink 0.2.1 [INFO] finished tweaking crates.io crate sender-sink 0.2.1 [INFO] tweaked toml for crates.io crate sender-sink 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate sender-sink 0.2.1 on toolchain 1.91.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 17 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 367b381008cbd7cc5f3bbc0350bf79597655a87dd65371a5f638c5259804abd2 [INFO] running `Command { std: "docker" "start" "-a" "367b381008cbd7cc5f3bbc0350bf79597655a87dd65371a5f638c5259804abd2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "367b381008cbd7cc5f3bbc0350bf79597655a87dd65371a5f638c5259804abd2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "367b381008cbd7cc5f3bbc0350bf79597655a87dd65371a5f638c5259804abd2", kill_on_drop: false }` [INFO] [stdout] 367b381008cbd7cc5f3bbc0350bf79597655a87dd65371a5f638c5259804abd2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 13327bed5e4c32c9c786a4cfb5ff964eba70d1daea79c79f5393300b4a7bc1fa [INFO] running `Command { std: "docker" "start" "-a" "13327bed5e4c32c9c786a4cfb5ff964eba70d1daea79c79f5393300b4a7bc1fa", kill_on_drop: false }` [INFO] [stderr] Compiling futures-util v0.3.31 [INFO] [stderr] Compiling tokio-macros v2.6.0 [INFO] [stderr] Compiling tokio v1.48.0 [INFO] [stderr] Compiling futures v0.3.31 [INFO] [stderr] Compiling sender-sink v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/wrappers/mpsc_sink.rs:22:21 [INFO] [stdout] | [INFO] [stdout] 22 | drop(&self.sender.take()); [INFO] [stdout] | ^^^^^-------------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&Option>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 22 - drop(&self.sender.take()); [INFO] [stdout] 22 + let _ = &self.sender.take(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.59s [INFO] running `Command { std: "docker" "inspect" "13327bed5e4c32c9c786a4cfb5ff964eba70d1daea79c79f5393300b4a7bc1fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "13327bed5e4c32c9c786a4cfb5ff964eba70d1daea79c79f5393300b4a7bc1fa", kill_on_drop: false }` [INFO] [stdout] 13327bed5e4c32c9c786a4cfb5ff964eba70d1daea79c79f5393300b4a7bc1fa [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1c10fa6847f05596369efece96af45f06b3d31a57cb7b06ec2b1082cb4454104 [INFO] running `Command { std: "docker" "start" "-a" "1c10fa6847f05596369efece96af45f06b3d31a57cb7b06ec2b1082cb4454104", kill_on_drop: false }` [INFO] [stderr] Compiling sender-sink v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/wrappers/mpsc_sink.rs:22:21 [INFO] [stdout] | [INFO] [stdout] 22 | drop(&self.sender.take()); [INFO] [stdout] | ^^^^^-------------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&Option>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 22 - drop(&self.sender.take()); [INFO] [stdout] 22 + let _ = &self.sender.take(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/wrappers/mpsc_sink.rs:22:21 [INFO] [stdout] | [INFO] [stdout] 22 | drop(&self.sender.take()); [INFO] [stdout] | ^^^^^-------------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&Option>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 22 - drop(&self.sender.take()); [INFO] [stdout] 22 + let _ = &self.sender.take(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s [INFO] running `Command { std: "docker" "inspect" "1c10fa6847f05596369efece96af45f06b3d31a57cb7b06ec2b1082cb4454104", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1c10fa6847f05596369efece96af45f06b3d31a57cb7b06ec2b1082cb4454104", kill_on_drop: false }` [INFO] [stdout] 1c10fa6847f05596369efece96af45f06b3d31a57cb7b06ec2b1082cb4454104 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.91.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 3bcf4fb42c3afce91c8b9a8519a18dbc7875c7d633a5373f617390db6c152345 [INFO] running `Command { std: "docker" "start" "-a" "3bcf4fb42c3afce91c8b9a8519a18dbc7875c7d633a5373f617390db6c152345", kill_on_drop: false }` [INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stderr] --> src/wrappers/mpsc_sink.rs:22:21 [INFO] [stderr] | [INFO] [stderr] 22 | drop(&self.sender.take()); [INFO] [stderr] | ^^^^^-------------------^ [INFO] [stderr] | | [INFO] [stderr] | argument has type `&Option>` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dropping_references)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the expression or result [INFO] [stderr] | [INFO] [stderr] 22 - drop(&self.sender.take()); [INFO] [stderr] 22 + let _ = &self.sender.take(); [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `sender-sink` (lib) generated 1 warning [INFO] [stderr] warning: `sender-sink` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sender_sink-8ea3319d820a7e85) [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test wrappers::mpsc_sink::test::it_closes_the_sender ... ok [INFO] [stdout] test wrappers::mpsc_sink::test::it_sends_to_the_sender ... ok [INFO] [stdout] test wrappers::mpsc_sink::test::it_fails_if_receiver_closed ... ok [INFO] [stderr] Doc-tests sender_sink [INFO] [stdout] test wrappers::mpsc_sink::test::it_sends_multiple_times ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [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" "3bcf4fb42c3afce91c8b9a8519a18dbc7875c7d633a5373f617390db6c152345", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3bcf4fb42c3afce91c8b9a8519a18dbc7875c7d633a5373f617390db6c152345", kill_on_drop: false }` [INFO] [stdout] 3bcf4fb42c3afce91c8b9a8519a18dbc7875c7d633a5373f617390db6c152345