[INFO] crate etcd-rs 0.3.0-alpha.1 is already in cache
[INFO] testing etcd-rs-0.3.0-alpha.1 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate etcd-rs 0.3.0-alpha.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate etcd-rs 0.3.0-alpha.1 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate etcd-rs 0.3.0-alpha.1
[INFO] finished tweaking crates.io crate etcd-rs 0.3.0-alpha.1
[INFO] tweaked toml for crates.io crate etcd-rs 0.3.0-alpha.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate etcd-rs 0.3.0-alpha.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 570961f1d0e4e71825f564b1c604dd49200a5f2bd121c00eaf6f4768fc9c9988
[INFO] running `Command { std: "docker" "start" "-a" "570961f1d0e4e71825f564b1c604dd49200a5f2bd121c00eaf6f4768fc9c9988", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "570961f1d0e4e71825f564b1c604dd49200a5f2bd121c00eaf6f4768fc9c9988", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "570961f1d0e4e71825f564b1c604dd49200a5f2bd121c00eaf6f4768fc9c9988", kill_on_drop: false }`
[INFO] [stdout] 570961f1d0e4e71825f564b1c604dd49200a5f2bd121c00eaf6f4768fc9c9988
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9baaf9d9759f5be933ba88c5b39b240b01a8d00546ee95a800a6a9999c67ebcb
[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" "9baaf9d9759f5be933ba88c5b39b240b01a8d00546ee95a800a6a9999c67ebcb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syn v1.0.17
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[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling arc-swap v0.4.5
[INFO] [stderr]    Compiling pin-project-lite v0.1.4
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[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
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[INFO] [stderr]    Compiling rand_chacha v0.2.2
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[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tempfile v3.1.0
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[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling rustls v0.17.0
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.30
[INFO] [stderr]    Compiling async-stream v0.2.1
[INFO] [stderr]    Compiling tokio v0.2.17
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling tracing v0.1.13
[INFO] [stderr]    Compiling pin-project v0.4.8
[INFO] [stderr]    Compiling tower-discover v0.3.0
[INFO] [stderr]    Compiling tower-load-shed v0.3.0
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[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]    Compiling tower-util v0.3.1
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[INFO] [stderr]    Compiling futures v0.3.4
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[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tower-timeout v0.3.0
[INFO] [stderr]    Compiling tower-retry v0.3.0
[INFO] [stderr]    Compiling tower-buffer v0.3.0
[INFO] [stderr]    Compiling tower-make v0.3.0
[INFO] [stderr]    Compiling tower-ready-cache v0.3.1
[INFO] [stderr]    Compiling tokio-rustls v0.13.0
[INFO] [stderr]    Compiling tower-limit v0.3.1
[INFO] [stderr]    Compiling tower-balance v0.3.0
[INFO] [stderr]    Compiling h2 v0.2.4
[INFO] [stderr]    Compiling tower v0.3.1
[INFO] [stderr]    Compiling tonic-build v0.1.1
[INFO] [stderr]    Compiling etcd-rs v0.3.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling hyper v0.13.4
[INFO] [stderr]    Compiling tonic v0.2.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 22s
[INFO] running `Command { std: "docker" "inspect" "9baaf9d9759f5be933ba88c5b39b240b01a8d00546ee95a800a6a9999c67ebcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9baaf9d9759f5be933ba88c5b39b240b01a8d00546ee95a800a6a9999c67ebcb", kill_on_drop: false }`
[INFO] [stdout] 9baaf9d9759f5be933ba88c5b39b240b01a8d00546ee95a800a6a9999c67ebcb
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93ab040a775fb0771f6f0c36ab897796466d3d8ea23f5a38107120a915c99762
[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" "93ab040a775fb0771f6f0c36ab897796466d3d8ea23f5a38107120a915c99762", kill_on_drop: false }`
[INFO] [stderr]    Compiling etcd-rs v0.3.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> examples/lease.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /         loop {
[INFO] [stdout] 102 | |             interval.tick().await;
[INFO] [stdout] 103 | |             client
[INFO] [stdout] 104 | |                 .lease()
[INFO] [stdout] 105 | |                 .keep_alive(LeaseKeepAliveRequest::new(lease_id))
[INFO] [stdout] 106 | |                 .await;
[INFO] [stdout] 107 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 110 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `grant_lease`
[INFO] [stdout]  --> examples/lease.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | async fn grant_lease(client: &Client) -> Result<()> {
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 25.00s
[INFO] running `Command { std: "docker" "inspect" "93ab040a775fb0771f6f0c36ab897796466d3d8ea23f5a38107120a915c99762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93ab040a775fb0771f6f0c36ab897796466d3d8ea23f5a38107120a915c99762", kill_on_drop: false }`
[INFO] [stdout] 93ab040a775fb0771f6f0c36ab897796466d3d8ea23f5a38107120a915c99762
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cd7773bb19245b9d0330fab73e3b1ebe3a843457b3235cffe77d28c50b462e26
[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" "cd7773bb19245b9d0330fab73e3b1ebe3a843457b3235cffe77d28c50b462e26", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> examples/lease.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 101 | /         loop {
[INFO] [stderr] 102 | |             interval.tick().await;
[INFO] [stderr] 103 | |             client
[INFO] [stderr] 104 | |                 .lease()
[INFO] [stderr] 105 | |                 .keep_alive(LeaseKeepAliveRequest::new(lease_id))
[INFO] [stderr] 106 | |                 .await;
[INFO] [stderr] 107 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 110 |       Ok(())
[INFO] [stderr]     |       ^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `grant_lease`
[INFO] [stderr]  --> examples/lease.rs:8:10
[INFO] [stderr]   |
[INFO] [stderr] 8 | async fn grant_lease(client: &Client) -> Result<()> {
[INFO] [stderr]   |          ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/etcd_rs-0158d32625f49e07
[INFO] [stdout] running 3 tests
[INFO] [stderr]    Doc-tests etcd-rs
[INFO] [stdout] test lazy::tests::test_lock_write ... ok
[INFO] [stdout] test lazy::tests::test_lock_evict ... ok
[INFO] [stdout] test lazy::tests::test_lock_read ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lease/mod.rs - lease (line 7) ... ok
[INFO] [stdout] test src/watch/mod.rs - watch (line 7) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cd7773bb19245b9d0330fab73e3b1ebe3a843457b3235cffe77d28c50b462e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd7773bb19245b9d0330fab73e3b1ebe3a843457b3235cffe77d28c50b462e26", kill_on_drop: false }`
[INFO] [stdout] cd7773bb19245b9d0330fab73e3b1ebe3a843457b3235cffe77d28c50b462e26