[INFO] fetching crate qni-connector-ws-rs 0.2.6...
[INFO] documenting qni-connector-ws-rs-0.2.6 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate qni-connector-ws-rs 0.2.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate qni-connector-ws-rs 0.2.6 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qni-connector-ws-rs 0.2.6
[INFO] finished tweaking crates.io crate qni-connector-ws-rs 0.2.6
[INFO] tweaked toml for crates.io crate qni-connector-ws-rs 0.2.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9cb7e47914d691bdd19acbc3e7d61e32de61045f7e2fb9aa4d0e0fac3cd8e349
[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" "9cb7e47914d691bdd19acbc3e7d61e32de61045f7e2fb9aa4d0e0fac3cd8e349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cb7e47914d691bdd19acbc3e7d61e32de61045f7e2fb9aa4d0e0fac3cd8e349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cb7e47914d691bdd19acbc3e7d61e32de61045f7e2fb9aa4d0e0fac3cd8e349", kill_on_drop: false }`
[INFO] [stdout] 9cb7e47914d691bdd19acbc3e7d61e32de61045f7e2fb9aa4d0e0fac3cd8e349
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c850e693d825977250fb6839570f360f9e08c8c189685949e3811132f9d48e91
[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" "c850e693d825977250fb6839570f360f9e08c8c189685949e3811132f9d48e91", kill_on_drop: false }`
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking qni-core-rs v0.3.2
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stdout] error[E0425]: cannot find value `VERSION_2_8_1` in crate `protobuf`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/qni-core-rs-0.3.2/src/protos/qni_api.rs:27:49
[INFO] [stdout]    |
[INFO] [stdout] 27 | const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^ help: a constant with a similar name exists: `VERSION_2_17_0`
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/target/debug/build/protobuf-f846d3ebf2a7a1c2/out/version.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub const VERSION_2_17_0: () = ();
[INFO] [stdout]    | ---------------------------------- similarly named constant `VERSION_2_17_0` defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qni-core-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c850e693d825977250fb6839570f360f9e08c8c189685949e3811132f9d48e91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c850e693d825977250fb6839570f360f9e08c8c189685949e3811132f9d48e91", kill_on_drop: false }`
[INFO] [stdout] c850e693d825977250fb6839570f360f9e08c8c189685949e3811132f9d48e91