[INFO] fetching crate chord 0.1.6...
[INFO] documenting chord-0.1.6 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate chord 0.1.6 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate chord 0.1.6 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 chord 0.1.6
[INFO] finished tweaking crates.io crate chord 0.1.6
[INFO] tweaked toml for crates.io crate chord 0.1.6 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate chord 0.1.6 already has a lockfile, it will not be regenerated
[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 nanoid v0.3.0
[INFO] [stderr]   Downloaded ureq v0.11.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 9d05a82e5f483aeb1952a8fe0cea5462f32ab9b200f1a2df42176d564c5dc744
[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" "9d05a82e5f483aeb1952a8fe0cea5462f32ab9b200f1a2df42176d564c5dc744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d05a82e5f483aeb1952a8fe0cea5462f32ab9b200f1a2df42176d564c5dc744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d05a82e5f483aeb1952a8fe0cea5462f32ab9b200f1a2df42176d564c5dc744", kill_on_drop: false }`
[INFO] [stdout] 9d05a82e5f483aeb1952a8fe0cea5462f32ab9b200f1a2df42176d564c5dc744
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] f35b17f5a0b8cc19b5b616c812afaa806b4e07606acebf29f3c2a9777d092912
[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" "f35b17f5a0b8cc19b5b616c812afaa806b4e07606acebf29f3c2a9777d092912", kill_on_drop: false }`
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking chunked_transfer v1.2.0
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking qstring v0.7.2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking nanoid v0.3.0
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking webpki-roots v0.18.0
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking ureq v0.11.4
[INFO] [stderr]  Documenting chord v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/lib.rs:46:11
[INFO] [stdout]    |
[INFO] [stdout] 46 |         if(self.user.is_empty() && self.key.is_empty()){
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/lib.rs:53:15
[INFO] [stdout]    |
[INFO] [stdout] 53 |             if(self.colors.len() == 1){
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/lib.rs:111:11
[INFO] [stdout]     |
[INFO] [stdout] 111 |         if(self.user.is_empty() && self.key.is_empty()){
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/lib.rs:118:15
[INFO] [stdout]     |
[INFO] [stdout] 118 |             if(self.colors.len() == 1){
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.52s
[INFO] running `Command { std: "docker" "inspect" "f35b17f5a0b8cc19b5b616c812afaa806b4e07606acebf29f3c2a9777d092912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f35b17f5a0b8cc19b5b616c812afaa806b4e07606acebf29f3c2a9777d092912", kill_on_drop: false }`
[INFO] [stdout] f35b17f5a0b8cc19b5b616c812afaa806b4e07606acebf29f3c2a9777d092912