[INFO] fetching crate fractal-matrix-api 4.2.0...
[INFO] documenting fractal-matrix-api-4.2.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate fractal-matrix-api 4.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate fractal-matrix-api 4.2.0 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 fractal-matrix-api 4.2.0
[INFO] finished tweaking crates.io crate fractal-matrix-api 4.2.0
[INFO] tweaked toml for crates.io crate fractal-matrix-api 4.2.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fragile v0.3.0
[INFO] [stderr]   Downloaded gobject-sys v0.9.1
[INFO] [stderr]   Downloaded gio-sys v0.9.1
[INFO] [stderr]   Downloaded urlencoding v1.1.1
[INFO] [stderr]   Downloaded glib v0.8.2
[INFO] [stderr]   Downloaded glib-sys v0.9.1
[INFO] [stderr]   Downloaded gio v0.7.0
[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] [stdout] 43134699f966a76303bc058e10d79e5d9d40976387ebed51c90fd894db4b7eb3
[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" "43134699f966a76303bc058e10d79e5d9d40976387ebed51c90fd894db4b7eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43134699f966a76303bc058e10d79e5d9d40976387ebed51c90fd894db4b7eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43134699f966a76303bc058e10d79e5d9d40976387ebed51c90fd894db4b7eb3", kill_on_drop: false }`
[INFO] [stdout] 43134699f966a76303bc058e10d79e5d9d40976387ebed51c90fd894db4b7eb3
[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] cd2c8e1ca9782067e45a041f0b088130852e2cbb41fee2328bf23efef3f9766c
[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" "cd2c8e1ca9782067e45a041f0b088130852e2cbb41fee2328bf23efef3f9766c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gio v0.7.0
[INFO] [stderr]     Checking fragile v0.3.0
[INFO] [stderr]     Checking urlencoding v1.1.1
[INFO] [stderr]    Compiling glib-sys v0.9.1
[INFO] [stderr]    Compiling gobject-sys v0.9.1
[INFO] [stderr]    Compiling gio-sys v0.9.1
[INFO] [stderr]     Checking directories v1.0.2
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking glib v0.8.2
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]  Documenting fractal-matrix-api v4.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/model/room.rs:399:13
[INFO] [stdout]     |
[INFO] [stdout] 399 | /             (x["type"] == "m.room.member"
[INFO] [stdout] 400 | |                 && ((x["content"]["membership"] == "join" && x["sender"] != userid)
[INFO] [stdout] 401 | |                     || (x["content"]["membership"] == "invite" && x["state_key"] != userid)))
[INFO] [stdout]     | |_____________________________________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 399 |             x["type"] == "m.room.member"
[INFO] [stdout] 400 |                 && ((x["content"]["membership"] == "join" && x["sender"] != userid)
[INFO] [stdout] 401 |                     || (x["content"]["membership"] == "invite" && x["state_key"] != userid))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.44s
[INFO] running `Command { std: "docker" "inspect" "cd2c8e1ca9782067e45a041f0b088130852e2cbb41fee2328bf23efef3f9766c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd2c8e1ca9782067e45a041f0b088130852e2cbb41fee2328bf23efef3f9766c", kill_on_drop: false }`
[INFO] [stdout] cd2c8e1ca9782067e45a041f0b088130852e2cbb41fee2328bf23efef3f9766c