[INFO] fetching crate uexec 0.1.4...
[INFO] testing uexec-0.1.4 against 1.91.0 for beta-1.92-2
[INFO] extracting crate uexec 0.1.4 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate uexec 0.1.4
[INFO] finished tweaking crates.io crate uexec 0.1.4
[INFO] tweaked toml for crates.io crate uexec 0.1.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate uexec 0.1.4 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] crate crates.io crate uexec 0.1.4 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_syscall v0.2.8
[INFO] [stderr]   Downloaded lock_api v0.4.4
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.73
[INFO] [stderr]   Downloaded fastrand v1.4.1
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.73
[INFO] [stderr]   Downloaded nanorand v0.5.2
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.4
[INFO] [stderr]   Downloaded pin-project v1.0.7
[INFO] [stderr]   Downloaded js-sys v0.3.50
[INFO] [stderr]   Downloaded spinning_top v0.2.3
[INFO] [stderr]   Downloaded easy-parallel v3.1.0
[INFO] [stderr]   Downloaded pin-project-internal v1.0.7
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.73
[INFO] [stderr]   Downloaded futures-lite v1.11.3
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.73
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.73
[INFO] [stderr]   Downloaded flume v0.10.5
[INFO] [stderr]   Downloaded parking v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 0e47adc8370da4fa3a49e03bca488bef7010591f22b33fe2446ae62bf6a33a3b
[INFO] running `Command { std: "docker" "start" "-a" "0e47adc8370da4fa3a49e03bca488bef7010591f22b33fe2446ae62bf6a33a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e47adc8370da4fa3a49e03bca488bef7010591f22b33fe2446ae62bf6a33a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e47adc8370da4fa3a49e03bca488bef7010591f22b33fe2446ae62bf6a33a3b", kill_on_drop: false }`
[INFO] [stdout] 0e47adc8370da4fa3a49e03bca488bef7010591f22b33fe2446ae62bf6a33a3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 12f827e60365ec4118141a42ed179062f5700c7bb3e2fd8cae3d0512f20a9f5c
[INFO] running `Command { std: "docker" "start" "-a" "12f827e60365ec4118141a42ed179062f5700c7bb3e2fd8cae3d0512f20a9f5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling futures-sink v0.3.14
[INFO] [stderr]    Compiling futures-core v0.3.14
[INFO] [stderr]    Compiling fastrand v1.4.1
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling spinning_top v0.2.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling nanorand v0.5.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling pin-project v1.0.7
[INFO] [stderr]    Compiling flume v0.10.5
[INFO] [stderr]    Compiling uexec v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.00s
[INFO] running `Command { std: "docker" "inspect" "12f827e60365ec4118141a42ed179062f5700c7bb3e2fd8cae3d0512f20a9f5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12f827e60365ec4118141a42ed179062f5700c7bb3e2fd8cae3d0512f20a9f5c", kill_on_drop: false }`
[INFO] [stdout] 12f827e60365ec4118141a42ed179062f5700c7bb3e2fd8cae3d0512f20a9f5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f0caeecb14318b49e471815f46d778c06f36d5c9b39e0683323a8b6db888470a
[INFO] running `Command { std: "docker" "start" "-a" "f0caeecb14318b49e471815f46d778c06f36d5c9b39e0683323a8b6db888470a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling futures-io v0.3.14
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling easy-parallel v3.1.0
[INFO] [stderr]    Compiling futures-lite v1.11.3
[INFO] [stderr]    Compiling uexec v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> examples/channel.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             drop(sender.send_async(Some(i)).await);
[INFO] [stdout]    |             ^^^^^--------------------------------^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `Result<(), flume::SendError<Option<u8>>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 20 -             drop(sender.send_async(Some(i)).await);
[INFO] [stdout] 20 +             let _ = sender.send_async(Some(i)).await;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> examples/channel.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 drop(sender.send_async(None).await);
[INFO] [stdout]    |                 ^^^^^-----------------------------^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      argument has type `Result<(), flume::SendError<Option<u8>>>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 23 -                 drop(sender.send_async(None).await);
[INFO] [stdout] 23 +                 let _ = sender.send_async(None).await;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.38s
[INFO] running `Command { std: "docker" "inspect" "f0caeecb14318b49e471815f46d778c06f36d5c9b39e0683323a8b6db888470a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0caeecb14318b49e471815f46d778c06f36d5c9b39e0683323a8b6db888470a", kill_on_drop: false }`
[INFO] [stdout] f0caeecb14318b49e471815f46d778c06f36d5c9b39e0683323a8b6db888470a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5e091314baac974fbb7bec5cc23eb0dec17c14e772caebd5c226a1bddc6031a9
[INFO] running `Command { std: "docker" "start" "-a" "5e091314baac974fbb7bec5cc23eb0dec17c14e772caebd5c226a1bddc6031a9", kill_on_drop: false }`
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]   --> examples/channel.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |             drop(sender.send_async(Some(i)).await);
[INFO] [stderr]    |             ^^^^^--------------------------------^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  argument has type `Result<(), flume::SendError<Option<u8>>>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]    |
[INFO] [stderr] 20 -             drop(sender.send_async(Some(i)).await);
[INFO] [stderr] 20 +             let _ = sender.send_async(Some(i)).await;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]   --> examples/channel.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 drop(sender.send_async(None).await);
[INFO] [stderr]    |                 ^^^^^-----------------------------^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      argument has type `Result<(), flume::SendError<Option<u8>>>`
[INFO] [stderr]    |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]    |
[INFO] [stderr] 23 -                 drop(sender.send_async(None).await);
[INFO] [stderr] 23 +                 let _ = sender.send_async(None).await;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `uexec` (example "channel") generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/uexec-d99c7ad5f4f81e32)
[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]      Running tests/basic.rs (/opt/rustwide/target/debug/deps/basic-928cad4d9824065e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test basic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/cancel.rs (/opt/rustwide/target/debug/deps/cancel-f883d35a160ca874)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test cancel_finished ... ok
[INFO] [stdout] test cancel_pending ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/workers.rs (/opt/rustwide/target/debug/deps/workers-5fb5188327bb82f8)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test workers ... ok
[INFO] [stderr]      Running tests/yield_now.rs (/opt/rustwide/target/debug/deps/yield_now-85f34d88b596edd3)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.83s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests uexec
[INFO] [stdout] test yield_now ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.50s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - terminate_workers (line 160) ... ok
[INFO] [stdout] test src/lib.rs - spawn_workers (line 147) ... ok
[INFO] [stdout] test src/lib.rs - spawn_local (line 124) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/lib.rs - spawn (line 98) ... ok
[INFO] [stdout] test src/lib.rs - block_on (line 82) ... ok
[INFO] [stdout] test src/lib.rs - (line 50) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5e091314baac974fbb7bec5cc23eb0dec17c14e772caebd5c226a1bddc6031a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e091314baac974fbb7bec5cc23eb0dec17c14e772caebd5c226a1bddc6031a9", kill_on_drop: false }`
[INFO] [stdout] 5e091314baac974fbb7bec5cc23eb0dec17c14e772caebd5c226a1bddc6031a9