[INFO] fetching crate libflo_event 0.1.2...
[INFO] documenting libflo_event-0.1.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate libflo_event 0.1.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate libflo_event 0.1.2 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libflo_event 0.1.2
[INFO] removed path dependency libflo_func from crates.io crate libflo_event 0.1.2
[INFO] removed path dependency libflo_module from crates.io crate libflo_event 0.1.2
[INFO] finished tweaking crates.io crate libflo_event 0.1.2
[INFO] tweaked toml for crates.io crate libflo_event 0.1.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] 679856c1ea773ce15fc064d2442c4f12f6adeb4caa035b6c0e0d52b2b489b2b0
[INFO] running `Command { std: "docker" "start" "-a" "679856c1ea773ce15fc064d2442c4f12f6adeb4caa035b6c0e0d52b2b489b2b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "679856c1ea773ce15fc064d2442c4f12f6adeb4caa035b6c0e0d52b2b489b2b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "679856c1ea773ce15fc064d2442c4f12f6adeb4caa035b6c0e0d52b2b489b2b0", kill_on_drop: false }`
[INFO] [stdout] 679856c1ea773ce15fc064d2442c4f12f6adeb4caa035b6c0e0d52b2b489b2b0
[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" "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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bbcda1b57abf7068380fdcd8d96f0b7ee8464ac8b4ff6a9bbfdde6c484ffc28
[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" "6bbcda1b57abf7068380fdcd8d96f0b7ee8464ac8b4ff6a9bbfdde6c484ffc28", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]    Compiling sharedlib v6.0.0
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking libflo_error v0.1.2
[INFO] [stderr]     Checking error-chain v0.5.0
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]    Compiling syntex_pos v0.44.0
[INFO] [stderr]    Compiling syntex_errors v0.44.0
[INFO] [stderr]    Compiling syntex_syntax v0.44.1
[INFO] [stderr]    Compiling aster v0.27.0
[INFO] [stderr]    Compiling syntex v0.44.0
[INFO] [stderr]    Compiling serde_codegen_internals v0.8.9
[INFO] [stderr]    Compiling quasi v0.20.1
[INFO] [stderr]    Compiling quasi_codegen v0.20.0
[INFO] [stderr]    Compiling serde_codegen v0.8.9
[INFO] [stderr]    Compiling libflo_module v0.1.2
[INFO] [stderr]    Compiling libflo_func v0.1.2
[INFO] [stderr]    Compiling libflo_event v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting libflo_event v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/payload.rs:16:33
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn destructure(self) -> (EventMapper) {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 57.50s
[INFO] running `Command { std: "docker" "inspect" "6bbcda1b57abf7068380fdcd8d96f0b7ee8464ac8b4ff6a9bbfdde6c484ffc28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bbcda1b57abf7068380fdcd8d96f0b7ee8464ac8b4ff6a9bbfdde6c484ffc28", kill_on_drop: false }`
[INFO] [stdout] 6bbcda1b57abf7068380fdcd8d96f0b7ee8464ac8b4ff6a9bbfdde6c484ffc28