[INFO] fetching crate redux 0.2.0...
[INFO] documenting redux-0.2.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate redux 0.2.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate redux 0.2.0 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 redux 0.2.0
[INFO] finished tweaking crates.io crate redux 0.2.0
[INFO] tweaked toml for crates.io crate redux 0.2.0 written to /workspace/builds/worker-10/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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 6fa479c6b00fd4b55a8c469dce554d98880f9ae1193c7ed2c29cb6bb55521540
[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" "6fa479c6b00fd4b55a8c469dce554d98880f9ae1193c7ed2c29cb6bb55521540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fa479c6b00fd4b55a8c469dce554d98880f9ae1193c7ed2c29cb6bb55521540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fa479c6b00fd4b55a8c469dce554d98880f9ae1193c7ed2c29cb6bb55521540", kill_on_drop: false }`
[INFO] [stdout] 6fa479c6b00fd4b55a8c469dce554d98880f9ae1193c7ed2c29cb6bb55521540
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 697f2dc13af715983bab8983a651e46b9c15cf11f6cc9895e2c1fbe6bc78e42e
[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" "697f2dc13af715983bab8983a651e46b9c15cf11f6cc9895e2c1fbe6bc78e42e", kill_on_drop: false }`
[INFO] [stderr]  Documenting redux v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]   --> src/codec.rs:77:28
[INFO] [stdout]    |
[INFO] [stdout] 77 |                self.low -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]   --> src/codec.rs:78:29
[INFO] [stdout]    |
[INFO] [stdout] 78 |                self.high -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]    --> src/codec.rs:106:48
[INFO] [stdout]     |
[INFO] [stdout] 106 |             let symbol = match input.read_bits({ self.model.parameters().symbol_bits }) {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:144:33
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 self.pending -= { self.model.parameters().code_half };
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:145:29
[INFO] [stdout]     |
[INFO] [stdout] 145 |                 self.low -= { self.model.parameters().code_half };
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:146:30
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 self.high -= { self.model.parameters().code_half };
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:148:33
[INFO] [stdout]     |
[INFO] [stdout] 148 |                 self.pending -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:149:29
[INFO] [stdout]     |
[INFO] [stdout] 149 |                 self.low -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:150:30
[INFO] [stdout]     |
[INFO] [stdout] 150 |                 self.high -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]    --> src/codec.rs:171:48
[INFO] [stdout]     |
[INFO] [stdout] 171 |                 try!(output.write_bits(symbol, { self.model.parameters().symbol_bits }));
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `Command { std: "docker" "inspect" "697f2dc13af715983bab8983a651e46b9c15cf11f6cc9895e2c1fbe6bc78e42e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "697f2dc13af715983bab8983a651e46b9c15cf11f6cc9895e2c1fbe6bc78e42e", kill_on_drop: false }`
[INFO] [stdout] 697f2dc13af715983bab8983a651e46b9c15cf11f6cc9895e2c1fbe6bc78e42e