[INFO] fetching crate unsync_channel 0.1.0...
[INFO] testing unsync_channel-0.1.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate unsync_channel 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate unsync_channel 0.1.0
[INFO] finished tweaking crates.io crate unsync_channel 0.1.0
[INFO] tweaked toml for crates.io crate unsync_channel 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unsync_channel 0.1.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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 44 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75085e4eaec7baf06172a62bd1beff3e4e7635fa7134ac2dc96ca20f3f2bd574
[INFO] running `Command { std: "docker" "start" "-a" "75085e4eaec7baf06172a62bd1beff3e4e7635fa7134ac2dc96ca20f3f2bd574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75085e4eaec7baf06172a62bd1beff3e4e7635fa7134ac2dc96ca20f3f2bd574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75085e4eaec7baf06172a62bd1beff3e4e7635fa7134ac2dc96ca20f3f2bd574", kill_on_drop: false }`
[INFO] [stdout] 75085e4eaec7baf06172a62bd1beff3e4e7635fa7134ac2dc96ca20f3f2bd574
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11d4263647a481a6c5dd346038648177c3c928aa73161354be4b786b5b8bb593
[INFO] running `Command { std: "docker" "start" "-a" "11d4263647a481a6c5dd346038648177c3c928aa73161354be4b786b5b8bb593", kill_on_drop: false }`
[INFO] [stderr]    Compiling unsync_channel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/spsc/unbuffered.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |             unsafe { Box::from_raw(shared) };
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             unsafe { let _ = Box::from_raw(shared); };
[INFO] [stdout]    |                      +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/spsc/unbuffered.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 |             unsafe { Box::from_raw(shared) };
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 90 |             unsafe { let _ = Box::from_raw(shared); };
[INFO] [stdout]    |                      +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "11d4263647a481a6c5dd346038648177c3c928aa73161354be4b786b5b8bb593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11d4263647a481a6c5dd346038648177c3c928aa73161354be4b786b5b8bb593", kill_on_drop: false }`
[INFO] [stdout] 11d4263647a481a6c5dd346038648177c3c928aa73161354be4b786b5b8bb593
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 133fd40712e7cff2d84f6048ff159843ebfb3f7058481f4e8773684e932fa181
[INFO] running `Command { std: "docker" "start" "-a" "133fd40712e7cff2d84f6048ff159843ebfb3f7058481f4e8773684e932fa181", kill_on_drop: false }`
[INFO] [stderr]    Compiling bencher v0.1.5
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/spsc/unbuffered.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |             unsafe { Box::from_raw(shared) };
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             unsafe { let _ = Box::from_raw(shared); };
[INFO] [stdout]    |                      +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/spsc/unbuffered.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 |             unsafe { Box::from_raw(shared) };
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 90 |             unsafe { let _ = Box::from_raw(shared); };
[INFO] [stdout]    |                      +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling unsync_channel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/spsc/unbuffered.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |             unsafe { Box::from_raw(shared) };
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |             unsafe { let _ = Box::from_raw(shared); };
[INFO] [stdout]    |                      +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/spsc/unbuffered.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 |             unsafe { Box::from_raw(shared) };
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 90 |             unsafe { let _ = Box::from_raw(shared); };
[INFO] [stdout]    |                      +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 9.37s
[INFO] running `Command { std: "docker" "inspect" "133fd40712e7cff2d84f6048ff159843ebfb3f7058481f4e8773684e932fa181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "133fd40712e7cff2d84f6048ff159843ebfb3f7058481f4e8773684e932fa181", kill_on_drop: false }`
[INFO] [stdout] 133fd40712e7cff2d84f6048ff159843ebfb3f7058481f4e8773684e932fa181
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 56e1e9d1c3dffdb0c5eae9a5911777ece122bce9957720605e3393577fb32288
[INFO] running `Command { std: "docker" "start" "-a" "56e1e9d1c3dffdb0c5eae9a5911777ece122bce9957720605e3393577fb32288", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stderr]   --> src/spsc/unbuffered.rs:23:22
[INFO] [stderr]    |
[INFO] [stderr] 23 |             unsafe { Box::from_raw(shared) };
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 23 |             unsafe { let _ = Box::from_raw(shared); };
[INFO] [stderr]    |                      +++++++                      +
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stderr]   --> src/spsc/unbuffered.rs:90:22
[INFO] [stderr]    |
[INFO] [stderr] 90 |             unsafe { Box::from_raw(shared) };
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 90 |             unsafe { let _ = Box::from_raw(shared); };
[INFO] [stderr]    |                      +++++++                      +
[INFO] [stderr] 
[INFO] [stderr] warning: `unsync_channel` (lib) generated 2 warnings
[INFO] [stderr] warning: `unsync_channel` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/unsync_channel-90a730729266b8bf)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test spsc::unbuffered::tests::test_send ... ok
[INFO] [stdout] test spsc::unbuffered::tests::test_send_lots ... ok
[INFO] [stdout] test spsc::unbuffered::tests::test_send_no_rx ... ok
[INFO] [stdout] test spsc::unbuffered::tests::test_send_recv ... ok
[INFO] [stdout] test spsc::unbuffered::tests::test_send_drop_still_recv ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests unsync_channel
[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" "56e1e9d1c3dffdb0c5eae9a5911777ece122bce9957720605e3393577fb32288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56e1e9d1c3dffdb0c5eae9a5911777ece122bce9957720605e3393577fb32288", kill_on_drop: false }`
[INFO] [stdout] 56e1e9d1c3dffdb0c5eae9a5911777ece122bce9957720605e3393577fb32288