[INFO] fetching crate couchbase 1.0.0-alpha.4...
[INFO] testing couchbase-1.0.0-alpha.4 against 1.49.0 for beta-1.50-1
[INFO] extracting crate couchbase 1.0.0-alpha.4 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate couchbase 1.0.0-alpha.4 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 couchbase 1.0.0-alpha.4
[INFO] finished tweaking crates.io crate couchbase 1.0.0-alpha.4
[INFO] tweaked toml for crates.io crate couchbase 1.0.0-alpha.4 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate couchbase 1.0.0-alpha.4 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 0fd36c7db52b7b323ae5c7508e2b562ec6f5cfee0fa1e2f44e0ad29ca76b715c
[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" "0fd36c7db52b7b323ae5c7508e2b562ec6f5cfee0fa1e2f44e0ad29ca76b715c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fd36c7db52b7b323ae5c7508e2b562ec6f5cfee0fa1e2f44e0ad29ca76b715c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fd36c7db52b7b323ae5c7508e2b562ec6f5cfee0fa1e2f44e0ad29ca76b715c", kill_on_drop: false }`
[INFO] [stdout] 0fd36c7db52b7b323ae5c7508e2b562ec6f5cfee0fa1e2f44e0ad29ca76b715c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] c99d4b882fd588efb33597a3f012c878fa608861aa07fa29bc582aeae1a12d76
[INFO] running `Command { std: "docker" "start" "-a" "c99d4b882fd588efb33597a3f012c878fa608861aa07fa29bc582aeae1a12d76", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling couchbase v1.0.0-alpha.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling crossbeam-channel v0.4.3
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling parse_duration v2.1.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling snafu-derive v0.6.8
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling snafu v0.6.8
[INFO] [stderr]    Compiling couchbase-sys v1.0.0-alpha.4
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 04s
[INFO] running `Command { std: "docker" "inspect" "c99d4b882fd588efb33597a3f012c878fa608861aa07fa29bc582aeae1a12d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c99d4b882fd588efb33597a3f012c878fa608861aa07fa29bc582aeae1a12d76", kill_on_drop: false }`
[INFO] [stdout] c99d4b882fd588efb33597a3f012c878fa608861aa07fa29bc582aeae1a12d76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stdout] 902b4485b9bc93833ccf94f302b1fa98ee95d7f9e3c0071b502a9f3c24933464
[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" "902b4485b9bc93833ccf94f302b1fa98ee95d7f9e3c0071b502a9f3c24933464", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fastrand v1.3.4
[INFO] [stderr]    Compiling async-mutex v1.1.5
[INFO] [stderr]    Compiling async-channel v1.4.0
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling polling v0.1.5
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling futures-lite v0.1.11
[INFO] [stderr]    Compiling multitask v0.2.0
[INFO] [stderr]    Compiling async-io v0.1.11
[INFO] [stderr]    Compiling blocking v0.5.2
[INFO] [stderr]    Compiling async-executor v0.1.2
[INFO] [stderr]    Compiling async-std v1.6.3
[INFO] [stderr]    Compiling couchbase v1.0.0-alpha.4 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `couchbase`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name users --edition=2018 examples/users.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="cc"' --cfg 'feature="couchbase-sys"' --cfg 'feature="crossbeam-channel"' --cfg 'feature="default"' --cfg 'feature="libcouchbase"' -C metadata=fa386594971c4d97 -C extra-filename=-fa386594971c4d97 --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-273126756aa81551.rlib --extern couchbase=/opt/rustwide/target/debug/deps/libcouchbase-5dc11a8d1cab2cd9.rlib --extern couchbase_sys=/opt/rustwide/target/debug/deps/libcouchbase_sys-484e87bb15a794e4.rlib --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-08e80f3c529f5b7b.rlib --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-ab2acb133fe65c64.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-ad0821c08eb17c29.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-7895c92c6d278491.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-574ec1b45a6b839c.rlib --extern parse_duration=/opt/rustwide/target/debug/deps/libparse_duration-ca37f198df60644d.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-cb9c72b786b9a27a.rlib --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-32add24dea7f7a82.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-0e6c50c897881bc6.rlib --extern serde_urlencoded=/opt/rustwide/target/debug/deps/libserde_urlencoded-ff4738da265a6300.rlib --extern snafu=/opt/rustwide/target/debug/deps/libsnafu-29f89302f16c51cd.rlib --extern uuid=/opt/rustwide/target/debug/deps/libuuid-a99b54cb9682f985.rlib --cap-lints=warn -L native=/opt/rustwide/target/debug/build/couchbase-ea092352fef9c670/out -L native=/opt/rustwide/target/debug/build/couchbase-sys-2ffa6a13c50c119d/out/build/lib` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "902b4485b9bc93833ccf94f302b1fa98ee95d7f9e3c0071b502a9f3c24933464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "902b4485b9bc93833ccf94f302b1fa98ee95d7f9e3c0071b502a9f3c24933464", kill_on_drop: false }`
[INFO] [stdout] 902b4485b9bc93833ccf94f302b1fa98ee95d7f9e3c0071b502a9f3c24933464