[INFO] fetching crate paxos-rust 0.2.0...
[INFO] testing paxos-rust-0.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate paxos-rust 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate paxos-rust 0.2.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate paxos-rust 0.2.0
[INFO] finished tweaking crates.io crate paxos-rust 0.2.0
[INFO] tweaked toml for crates.io crate paxos-rust 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 3fb264268e411cbafdc2044cde469b4608fbe6c3a62e84fc7ab79be58aee2b7a
[INFO] running `Command { std: "docker" "start" "-a" "3fb264268e411cbafdc2044cde469b4608fbe6c3a62e84fc7ab79be58aee2b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fb264268e411cbafdc2044cde469b4608fbe6c3a62e84fc7ab79be58aee2b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fb264268e411cbafdc2044cde469b4608fbe6c3a62e84fc7ab79be58aee2b7a", kill_on_drop: false }`
[INFO] [stdout] 3fb264268e411cbafdc2044cde469b4608fbe6c3a62e84fc7ab79be58aee2b7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] a53a77fccab8547c6725599361cc958d3d212fe31c0ef3694bf6c6e4c7725384
[INFO] running `Command { std: "docker" "start" "-a" "a53a77fccab8547c6725599361cc958d3d212fe31c0ef3694bf6c6e4c7725384", kill_on_drop: false }`
[INFO] [stderr]    Compiling paxos-rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/acceptor.rs:18:31
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/learner.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/proposer.rs:15:31
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "a53a77fccab8547c6725599361cc958d3d212fe31c0ef3694bf6c6e4c7725384", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a53a77fccab8547c6725599361cc958d3d212fe31c0ef3694bf6c6e4c7725384", kill_on_drop: false }`
[INFO] [stdout] a53a77fccab8547c6725599361cc958d3d212fe31c0ef3694bf6c6e4c7725384
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eef2bdf4eb62d26c830d2b00fa10f4f9d3b35b11595de6928501ce777aa786b0
[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" "eef2bdf4eb62d26c830d2b00fa10f4f9d3b35b11595de6928501ce777aa786b0", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/acceptor.rs:18:31
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/learner.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/proposer.rs:15:31
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling paxos-rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: attribute must be of the form `#[test]`
[INFO] [stdout]    --> src/learner.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     #[test(should_panic)]
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ill_formed_attribute_input)]` 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 a future release!
[INFO] [stdout]     = note: for more information, see issue #57571 <https://github.com/rust-lang/rust/issues/57571>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/acceptor.rs:18:31
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/learner.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/proposer.rs:15:31
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `Command { std: "docker" "inspect" "eef2bdf4eb62d26c830d2b00fa10f4f9d3b35b11595de6928501ce777aa786b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eef2bdf4eb62d26c830d2b00fa10f4f9d3b35b11595de6928501ce777aa786b0", kill_on_drop: false }`
[INFO] [stdout] eef2bdf4eb62d26c830d2b00fa10f4f9d3b35b11595de6928501ce777aa786b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 664eddf16f90e865e360de566093b5ccab1ea4530f8a0a6bb04831fd7fdb521c
[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" "664eddf16f90e865e360de566093b5ccab1ea4530f8a0a6bb04831fd7fdb521c", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/acceptor.rs:18:31
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/learner.rs:19:31
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/proposer.rs:15:31
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: attribute must be of the form `#[test]`
[INFO] [stderr]    --> src/learner.rs:125:5
[INFO] [stderr]     |
[INFO] [stderr] 125 |     #[test(should_panic)]
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ill_formed_attribute_input)]` 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 a future release!
[INFO] [stderr]     = note: for more information, see issue #57571 <https://github.com/rust-lang/rust/issues/57571>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/acceptor.rs:18:31
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/learner.rs:19:31
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/proposer.rs:15:31
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub messenger: Option<Box<Messenger<T>>>,
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Messenger<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/paxos_rust-8c1f7ca6eaf41c7f
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test acceptor::tests::acceptor_new ... ok
[INFO] [stdout] test acceptor::tests::acceptor_receive_accept ... ok
[INFO] [stdout] test learner::tests::learner_receive_accepted_mismatch ... ok
[INFO] [stdout] test proposer::tests::proposer_accept ... ok
[INFO] [stdout] test proposer::tests::proposer_receive_promise ... ok
[INFO] [stderr]    Doc-tests paxos-rust
[INFO] [stdout] test learner::tests::learner_new ... ok
[INFO] [stdout] test acceptor::tests::acceptor_receive_prepare ... ok
[INFO] [stdout] test learner::tests::learner_receive_accepted ... ok
[INFO] [stdout] test proposer::tests::proposer_prepare ... ok
[INFO] [stdout] test proposer::tests::proposer_receive_accepted ... ok
[INFO] [stdout] test proposer::tests::proposer_new ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 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" "664eddf16f90e865e360de566093b5ccab1ea4530f8a0a6bb04831fd7fdb521c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "664eddf16f90e865e360de566093b5ccab1ea4530f8a0a6bb04831fd7fdb521c", kill_on_drop: false }`
[INFO] [stdout] 664eddf16f90e865e360de566093b5ccab1ea4530f8a0a6bb04831fd7fdb521c