[INFO] fetching crate zookeeper-async 3.0.0...
[INFO] testing zookeeper-async-3.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate zookeeper-async 3.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate zookeeper-async 3.0.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zookeeper-async 3.0.0
[INFO] finished tweaking crates.io crate zookeeper-async 3.0.0
[INFO] tweaked toml for crates.io crate zookeeper-async 3.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate zookeeper-async 3.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4abe964e7597ac02a0a56e49f1d71148ba7edee305f3d923d8d7f839c9dd8f7c
[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" "4abe964e7597ac02a0a56e49f1d71148ba7edee305f3d923d8d7f839c9dd8f7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4abe964e7597ac02a0a56e49f1d71148ba7edee305f3d923d8d7f839c9dd8f7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4abe964e7597ac02a0a56e49f1d71148ba7edee305f3d923d8d7f839c9dd8f7c", kill_on_drop: false }`
[INFO] [stdout] 4abe964e7597ac02a0a56e49f1d71148ba7edee305f3d923d8d7f839c9dd8f7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "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] ae1942e0bad8d380cd0b500512d9b03342a420f119f55b01d5428cb8bcb31143
[INFO] running `Command { std: "docker" "start" "-a" "ae1942e0bad8d380cd0b500512d9b03342a420f119f55b01d5428cb8bcb31143", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling futures-sink v0.3.6
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling futures-core v0.3.6
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.6
[INFO] [stderr]    Compiling pin-project-lite v0.1.10
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling snowflake v1.3.0
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling futures-task v0.3.6
[INFO] [stderr]    Compiling futures-channel v0.3.6
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling mio v0.7.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling toml v0.5.7
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]    Compiling num_enum_derive v0.5.1
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling tokio-macros v0.3.0
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling tokio v0.3.0
[INFO] [stderr]    Compiling tracing v0.1.21
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling futures-util v0.3.6
[INFO] [stderr]    Compiling num_enum v0.5.1
[INFO] [stderr]    Compiling futures-executor v0.3.6
[INFO] [stderr]    Compiling futures v0.3.6
[INFO] [stderr]    Compiling zookeeper-async v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 33s
[INFO] running `Command { std: "docker" "inspect" "ae1942e0bad8d380cd0b500512d9b03342a420f119f55b01d5428cb8bcb31143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae1942e0bad8d380cd0b500512d9b03342a420f119f55b01d5428cb8bcb31143", kill_on_drop: false }`
[INFO] [stdout] ae1942e0bad8d380cd0b500512d9b03342a420f119f55b01d5428cb8bcb31143
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "test" "--frozen" "--no-run" "--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] 38949e8908dd3a06944995a31c5845c4136526edbf515a9c71c060740d2c1ad8
[INFO] running `Command { std: "docker" "start" "-a" "38949e8908dd3a06944995a31c5845c4136526edbf515a9c71c060740d2c1ad8", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.20
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling smallvec v1.4.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling sharded-slab v0.0.9
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling regex v1.4.1
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling tracing-subscriber v0.2.13
[INFO] [stderr]    Compiling zookeeper-async v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `kill_an_instance`
[INFO] [stdout]   --> tests/test.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn kill_an_instance(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `kill_an_instance`
[INFO] [stdout]   --> tests/test.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn kill_an_instance(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `kill_an_instance`
[INFO] [stdout]   --> tests/test.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn kill_an_instance(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zookeeper-async`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name test_recursive --edition=2018 tests/test_recursive.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test -C metadata=de02e4aa3f828786 -C extra-filename=-de02e4aa3f828786 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-1326f308c8e9a899.so --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-04b16b37fbc1beb3.rlib --extern bytes=/opt/rustwide/target/debug/deps/libbytes-8f475ca97d0bfeee.rlib --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-7fe22371f062329b.so --extern futures=/opt/rustwide/target/debug/deps/libfutures-e4f754a56c95cfc5.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-7895c92c6d278491.rlib --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-5b52d5b5e646e271.rlib --extern snowflake=/opt/rustwide/target/debug/deps/libsnowflake-d4ad3f1fb0617b88.rlib --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9431b91bfcedfe96.rlib --extern tracing=/opt/rustwide/target/debug/deps/libtracing-ae0991ea343a94dc.rlib --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-dd524039934b1f0a.rlib --extern uuid=/opt/rustwide/target/debug/deps/libuuid-f5389cec355c7e53.rlib --extern zookeeper_async=/opt/rustwide/target/debug/deps/libzookeeper_async-1d50b29bc0e640fc.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "38949e8908dd3a06944995a31c5845c4136526edbf515a9c71c060740d2c1ad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38949e8908dd3a06944995a31c5845c4136526edbf515a9c71c060740d2c1ad8", kill_on_drop: false }`
[INFO] [stdout] 38949e8908dd3a06944995a31c5845c4136526edbf515a9c71c060740d2c1ad8