[INFO] fetching crate async-slot 0.1.0...
[INFO] testing async-slot-0.1.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate async-slot 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate async-slot 0.1.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48d48da2b54bc75b0168dca40b2c4acf2cb8d5c5c0cd7b56f1cc8c1d72625b49
[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" "48d48da2b54bc75b0168dca40b2c4acf2cb8d5c5c0cd7b56f1cc8c1d72625b49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48d48da2b54bc75b0168dca40b2c4acf2cb8d5c5c0cd7b56f1cc8c1d72625b49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48d48da2b54bc75b0168dca40b2c4acf2cb8d5c5c0cd7b56f1cc8c1d72625b49", kill_on_drop: false }`
[INFO] [stdout] 48d48da2b54bc75b0168dca40b2c4acf2cb8d5c5c0cd7b56f1cc8c1d72625b49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcc956a2f278abbd4c123e55586a76ae1ce8a7f225c3028cce10b59f2d35b94b
[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" "bcc956a2f278abbd4c123e55586a76ae1ce8a7f225c3028cce10b59f2d35b94b", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-slot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "bcc956a2f278abbd4c123e55586a76ae1ce8a7f225c3028cce10b59f2d35b94b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcc956a2f278abbd4c123e55586a76ae1ce8a7f225c3028cce10b59f2d35b94b", kill_on_drop: false }`
[INFO] [stdout] bcc956a2f278abbd4c123e55586a76ae1ce8a7f225c3028cce10b59f2d35b94b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81eee32b96e3c9205d3c0cda0427c1f8e19521cb7f7929d78d6f07874640a97b
[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" "81eee32b96e3c9205d3c0cda0427c1f8e19521cb7f7929d78d6f07874640a97b", 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 was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[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 1.38s
[INFO] running `Command { std: "docker" "inspect" "81eee32b96e3c9205d3c0cda0427c1f8e19521cb7f7929d78d6f07874640a97b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81eee32b96e3c9205d3c0cda0427c1f8e19521cb7f7929d78d6f07874640a97b", kill_on_drop: false }`
[INFO] [stdout] 81eee32b96e3c9205d3c0cda0427c1f8e19521cb7f7929d78d6f07874640a97b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.54.0" "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] 439f46f343f6b6d52906b4bfaf619891be3a70847b5df2efeafbefacf8126b14
[INFO] running `Command { std: "docker" "start" "-a" "439f46f343f6b6d52906b4bfaf619891be3a70847b5df2efeafbefacf8126b14", 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 was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/async_slot-415d84c0f8716dc3)
[INFO] [stderr]      Running tests/slot.rs (/opt/rustwide/target/debug/deps/slot-67c50b5a55040e59)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test poll_cancel ... ok
[INFO] [stdout] test send_recv_no_buffer ... ok
[INFO] [stdout] test send_error ... ok
[INFO] [stdout] test send_shared_recv ... ok
[INFO] [stdout] test is_canceled ... ok
[INFO] [stdout] test send_recv ... ok
[INFO] [stdout] test swap ... ok
[INFO] [stdout] test tx_close_gets_none ... 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 4.90s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/slot-unsync.rs (/opt/rustwide/target/debug/deps/slot_unsync-6bc8b05eeef6eb3a)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test send_recv ... ok
[INFO] [stdout] test tx_close_gets_none ... ok
[INFO] [stdout] test poll_cancel ... ok
[INFO] [stdout] test swap ... ok
[INFO] [stdout] test is_canceled ... ok
[INFO] [stdout] test send_shared_recv ... ok
[INFO] [stdout] test send_recv_no_buffer ... 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/lib.rs - (line 22) ... ok
[INFO] [stdout] test src/unsync.rs - unsync::channel (line 193) ... 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 0.64s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "439f46f343f6b6d52906b4bfaf619891be3a70847b5df2efeafbefacf8126b14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "439f46f343f6b6d52906b4bfaf619891be3a70847b5df2efeafbefacf8126b14", kill_on_drop: false }`
[INFO] [stdout] 439f46f343f6b6d52906b4bfaf619891be3a70847b5df2efeafbefacf8126b14
