[INFO] cloning repository https://github.com/tkmct/future-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tkmct/future-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkmct%2Ffuture-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkmct%2Ffuture-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a39152d7473ddd9da6b899de074febbe6e2e053
[INFO] testing tkmct/future-sample against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftkmct%2Ffuture-sample" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tkmct/future-sample 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 git repo https://github.com/tkmct/future-sample
[INFO] finished tweaking git repo https://github.com/tkmct/future-sample
[INFO] tweaked toml for git repo https://github.com/tkmct/future-sample written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/tkmct/future-sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ethbloom v0.6.4
[INFO] [stderr]   Downloaded ethereum-types-serialize v0.2.2
[INFO] [stderr]   Downloaded jsonrpc-core v11.0.0
[INFO] [stderr]   Downloaded fixed-hash v0.3.2
[INFO] [stderr]   Downloaded uint v0.5.0
[INFO] [stderr]   Downloaded rlp v0.4.0
[INFO] [stderr]   Downloaded impl-serde v0.2.0
[INFO] [stderr]   Downloaded tiny-keccak v1.4.3
[INFO] [stderr]   Downloaded ethereum-types v0.5.2
[INFO] [stderr]   Downloaded ethabi v7.0.0
[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] [stdout] 9941eaf3c89ab7185fe7aa726c96d4826740b7dbbef37bb8b1818ce1e384cda1
[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" "9941eaf3c89ab7185fe7aa726c96d4826740b7dbbef37bb8b1818ce1e384cda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9941eaf3c89ab7185fe7aa726c96d4826740b7dbbef37bb8b1818ce1e384cda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9941eaf3c89ab7185fe7aa726c96d4826740b7dbbef37bb8b1818ce1e384cda1", kill_on_drop: false }`
[INFO] [stdout] 9941eaf3c89ab7185fe7aa726c96d4826740b7dbbef37bb8b1818ce1e384cda1
[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] [stdout] 102184e3b0c58e0f96fb0a449b9a201c9cf72f03afb0bba70f4d53c4a49e9349
[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" "102184e3b0c58e0f96fb0a449b9a201c9cf72f03afb0bba70f4d53c4a49e9349", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures v0.1.27
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling rustc-hex v2.0.1
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]    Compiling openssl v0.10.23
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling tokio-trace-core v0.2.0
[INFO] [stderr]    Compiling openssl-sys v0.9.47
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling rlp v0.4.0
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling http v0.1.17
[INFO] [stderr]    Compiling string v0.2.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling impl-rlp v0.2.0
[INFO] [stderr]    Compiling uint v0.5.0
[INFO] [stderr]    Compiling tiny-keccak v1.4.3
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling tokio-executor v0.1.7
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling tokio-sync v0.1.6
[INFO] [stderr]    Compiling tokio-buf v0.1.1
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling tokio-timer v0.1.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling tokio-timer v0.2.11
[INFO] [stderr]    Compiling tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling fixed-hash v0.3.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling h2 v0.1.23
[INFO] [stderr]    Compiling http-body v0.1.0
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.14
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio v0.1.21
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling hyper v0.12.29
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]    Compiling tokio-uds v0.1.7
[INFO] [stderr]    Compiling tokio-tls v0.2.1
[INFO] [stderr]    Compiling websocket v0.21.1
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling impl-serde v0.2.0
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling ethereum-types-serialize v0.2.2
[INFO] [stderr]    Compiling ethbloom v0.6.4
[INFO] [stderr]    Compiling ethereum-types v0.5.2
[INFO] [stderr]    Compiling jsonrpc-core v11.0.0
[INFO] [stderr]    Compiling ethabi v7.0.0
[INFO] [stderr]    Compiling web3 v0.7.0 (https://github.com/tomusdrw/rust-web3#21cb38c7)
[INFO] [stderr]    Compiling future-sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/event_watcher.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 146 | /         loop {
[INFO] [stdout] 147 | |             let logs = match try_ready!(self.stream.poll()) {
[INFO] [stdout] 148 | |                 Some(value) => value,
[INFO] [stdout] 149 | |                 None => continue,
[INFO] [stdout] ...   |
[INFO] [stdout] 157 | |             }
[INFO] [stdout] 158 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 159 | 
[INFO] [stdout] 160 |           Ok(Async::Ready(()))
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 08s
[INFO] running `Command { std: "docker" "inspect" "102184e3b0c58e0f96fb0a449b9a201c9cf72f03afb0bba70f4d53c4a49e9349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "102184e3b0c58e0f96fb0a449b9a201c9cf72f03afb0bba70f4d53c4a49e9349", kill_on_drop: false }`
[INFO] [stdout] 102184e3b0c58e0f96fb0a449b9a201c9cf72f03afb0bba70f4d53c4a49e9349
[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] d0eb058a31a8fad8cbcdcc134b6ad1519c48a3ecdd98eea9a77c5cb54ecc33a1
[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" "d0eb058a31a8fad8cbcdcc134b6ad1519c48a3ecdd98eea9a77c5cb54ecc33a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling future-sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/event_watcher.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 146 | /         loop {
[INFO] [stdout] 147 | |             let logs = match try_ready!(self.stream.poll()) {
[INFO] [stdout] 148 | |                 Some(value) => value,
[INFO] [stdout] 149 | |                 None => continue,
[INFO] [stdout] ...   |
[INFO] [stdout] 157 | |             }
[INFO] [stdout] 158 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 159 | 
[INFO] [stdout] 160 |           Ok(Async::Ready(()))
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/event_watcher.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 146 | /         loop {
[INFO] [stdout] 147 | |             let logs = match try_ready!(self.stream.poll()) {
[INFO] [stdout] 148 | |                 Some(value) => value,
[INFO] [stdout] 149 | |                 None => continue,
[INFO] [stdout] ...   |
[INFO] [stdout] 157 | |             }
[INFO] [stdout] 158 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 159 | 
[INFO] [stdout] 160 |           Ok(Async::Ready(()))
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.99s
[INFO] running `Command { std: "docker" "inspect" "d0eb058a31a8fad8cbcdcc134b6ad1519c48a3ecdd98eea9a77c5cb54ecc33a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0eb058a31a8fad8cbcdcc134b6ad1519c48a3ecdd98eea9a77c5cb54ecc33a1", kill_on_drop: false }`
[INFO] [stdout] d0eb058a31a8fad8cbcdcc134b6ad1519c48a3ecdd98eea9a77c5cb54ecc33a1
[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] fb9dc6e6c7eb1fb0dfaae4e59e6ddc6217235dca45a9c9b8d861fb2e442834c6
[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" "fb9dc6e6c7eb1fb0dfaae4e59e6ddc6217235dca45a9c9b8d861fb2e442834c6", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/event_watcher.rs:160:9
[INFO] [stderr]     |
[INFO] [stderr] 146 | /         loop {
[INFO] [stderr] 147 | |             let logs = match try_ready!(self.stream.poll()) {
[INFO] [stderr] 148 | |                 Some(value) => value,
[INFO] [stderr] 149 | |                 None => continue,
[INFO] [stderr] ...   |
[INFO] [stderr] 157 | |             }
[INFO] [stderr] 158 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 159 | 
[INFO] [stderr] 160 |           Ok(Async::Ready(()))
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/event_watcher.rs:160:9
[INFO] [stderr]     |
[INFO] [stderr] 146 | /         loop {
[INFO] [stderr] 147 | |             let logs = match try_ready!(self.stream.poll()) {
[INFO] [stderr] 148 | |                 Some(value) => value,
[INFO] [stderr] 149 | |                 None => continue,
[INFO] [stderr] ...   |
[INFO] [stderr] 157 | |             }
[INFO] [stderr] 158 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 159 | 
[INFO] [stderr] 160 |           Ok(Async::Ready(()))
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/future_sample-08a9a7d629c0d217
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/future_sample-021c8740498519c0
[INFO] [stdout] test event_db::tests::test_event_seen ... ok
[INFO] [stdout] test event_db::tests::test_last_logged_block ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests future-sample
[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] [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" "fb9dc6e6c7eb1fb0dfaae4e59e6ddc6217235dca45a9c9b8d861fb2e442834c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb9dc6e6c7eb1fb0dfaae4e59e6ddc6217235dca45a9c9b8d861fb2e442834c6", kill_on_drop: false }`
[INFO] [stdout] fb9dc6e6c7eb1fb0dfaae4e59e6ddc6217235dca45a9c9b8d861fb2e442834c6