[INFO] fetching crate async-slot 0.1.0...
[INFO] testing async-slot-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate async-slot 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate async-slot 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-slot 0.1.0
[INFO] finished tweaking crates.io crate async-slot 0.1.0
[INFO] tweaked toml for crates.io crate async-slot 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d03b59ee7b12575ef73ecef966a37c678858987e1f593de9d2481a88b5c1d51
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5d03b59ee7b12575ef73ecef966a37c678858987e1f593de9d2481a88b5c1d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d03b59ee7b12575ef73ecef966a37c678858987e1f593de9d2481a88b5c1d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d03b59ee7b12575ef73ecef966a37c678858987e1f593de9d2481a88b5c1d51", kill_on_drop: false }`
[INFO] [stdout] 5d03b59ee7b12575ef73ecef966a37c678858987e1f593de9d2481a88b5c1d51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7b74a6046d4d1de1543b1a75af9f3dfda6c61c70f1dd449d374076bcccb7c35e
[INFO] running `Command { std: "docker" "start" "-a" "7b74a6046d4d1de1543b1a75af9f3dfda6c61c70f1dd449d374076bcccb7c35e", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-slot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "7b74a6046d4d1de1543b1a75af9f3dfda6c61c70f1dd449d374076bcccb7c35e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b74a6046d4d1de1543b1a75af9f3dfda6c61c70f1dd449d374076bcccb7c35e", kill_on_drop: false }`
[INFO] [stdout] 7b74a6046d4d1de1543b1a75af9f3dfda6c61c70f1dd449d374076bcccb7c35e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 015fb204ac1f9297dcb3f52b0d5cad90afdc5692d239fef8fc084a8bfc570fcc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "015fb204ac1f9297dcb3f52b0d5cad90afdc5692d239fef8fc084a8bfc570fcc", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-slot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/slot.rs:203:22
[INFO] [stdout]     |
[INFO] [stdout] 203 |     fn list() -> Box<Stream<Item=i32, Error=u32>> {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item=i32, Error=u32>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tx` is never read
[INFO] [stdout]    --> tests/slot.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |         tx = tx.send(2).wait().unwrap();
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "015fb204ac1f9297dcb3f52b0d5cad90afdc5692d239fef8fc084a8bfc570fcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "015fb204ac1f9297dcb3f52b0d5cad90afdc5692d239fef8fc084a8bfc570fcc", kill_on_drop: false }`
[INFO] [stdout] 015fb204ac1f9297dcb3f52b0d5cad90afdc5692d239fef8fc084a8bfc570fcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 386f6bf2f351df87e88667f9968c820482645865c3f385af7b8e356e054e80f4
[INFO] running `Command { std: "docker" "start" "-a" "386f6bf2f351df87e88667f9968c820482645865c3f385af7b8e356e054e80f4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> tests/slot.rs:203:22
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 203 |     fn list() -> Box<Stream<Item=i32, Error=u32>> {
[INFO] [stdout] 
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item=i32, Error=u32>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tx` is never read
[INFO] [stderr]    --> tests/slot.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 |         tx = tx.send(2).wait().unwrap();
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `async-slot` (test "slot") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/async_slot-02c10019561e34a5)
[INFO] [stderr]      Running tests/slot.rs (/opt/rustwide/target/debug/deps/slot-e4a01053366e6c9a)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test is_canceled ... ok
[INFO] [stdout] test send_recv ... ok
[INFO] [stdout] test send_recv_no_buffer ... ok
[INFO] [stdout] test tx_close_gets_none ... ok
[INFO] [stdout] test send_error ... ok
[INFO] [stdout] test swap ... ok
[INFO] [stdout] test poll_cancel ... ok
[INFO] [stdout] test send_shared_recv ... ok
[INFO] [stdout] test send_recv_threads ... ok
[INFO] [stdout] test stress_shared_bounded_hard ... ok
[INFO] [stdout] test send_recv_threads_no_capacity ... ok
[INFO] [stdout] test stress_drop_sender ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.90s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/slot-unsync.rs (/opt/rustwide/target/debug/deps/slot_unsync-7565d336eb9319b6)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test is_canceled ... ok
[INFO] [stdout] test send_recv ... ok
[INFO] [stdout] test poll_cancel ... ok
[INFO] [stdout] test send_recv_no_buffer ... ok
[INFO] [stdout] test send_shared_recv ... ok
[INFO] [stdout] test swap ... ok
[INFO] [stdout] test tx_close_gets_none ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests async-slot
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/unsync.rs - unsync::channel (line 193) ... ok
[INFO] [stdout] test src/lib.rs - (line 22) ... ok
[INFO] [stdout] test src/sync.rs - sync::channel (line 213) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.75s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "386f6bf2f351df87e88667f9968c820482645865c3f385af7b8e356e054e80f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "386f6bf2f351df87e88667f9968c820482645865c3f385af7b8e356e054e80f4", kill_on_drop: false }`
[INFO] [stdout] 386f6bf2f351df87e88667f9968c820482645865c3f385af7b8e356e054e80f4
