[INFO] fetching crate etcd-rs 0.3.0-alpha.1...
[INFO] checking etcd-rs-0.3.0-alpha.1 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate etcd-rs 0.3.0-alpha.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate etcd-rs 0.3.0-alpha.1 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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-6/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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e789462d99131ca12602b4e324a81615be9bfde24737761bfeb0122cc9956eb9
[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" "e789462d99131ca12602b4e324a81615be9bfde24737761bfeb0122cc9956eb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e789462d99131ca12602b4e324a81615be9bfde24737761bfeb0122cc9956eb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e789462d99131ca12602b4e324a81615be9bfde24737761bfeb0122cc9956eb9", kill_on_drop: false }`
[INFO] [stdout] e789462d99131ca12602b4e324a81615be9bfde24737761bfeb0122cc9956eb9
[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=forbid" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--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] 329efde6d83f9e9057db3951c703467efba46fe60158ab658abf7122fce76807
[INFO] running `Command { std: "docker" "start" "-a" "329efde6d83f9e9057db3951c703467efba46fe60158ab658abf7122fce76807", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking cfg-if v0.1.10
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[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]    Compiling prost-types v0.6.1
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[INFO] [stderr]     Checking tower-retry v0.3.0
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[INFO] [stderr]     Checking tokio-rustls v0.13.0
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[INFO] [stderr]     Checking tower-balance v0.3.0
[INFO] [stderr]     Checking h2 v0.2.4
[INFO] [stderr]     Checking 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]     Checking hyper v0.13.4
[INFO] [stderr]     Checking tonic v0.2.1
[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 dev [unoptimized + debuginfo] target(s) in 1m 37s
[INFO] running `Command { std: "docker" "inspect" "329efde6d83f9e9057db3951c703467efba46fe60158ab658abf7122fce76807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "329efde6d83f9e9057db3951c703467efba46fe60158ab658abf7122fce76807", kill_on_drop: false }`
[INFO] [stdout] 329efde6d83f9e9057db3951c703467efba46fe60158ab658abf7122fce76807