[INFO] fetching crate guessing_game_viggin 0.1.0...
[INFO] documenting guessing_game_viggin-0.1.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate guessing_game_viggin 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate guessing_game_viggin 0.1.0 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 guessing_game_viggin 0.1.0
[INFO] finished tweaking crates.io crate guessing_game_viggin 0.1.0
[INFO] tweaked toml for crates.io crate guessing_game_viggin 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate guessing_game_viggin 0.1.0 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] 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] 4fd87847353594c3ddb42da23bea0d9c68f40840b156bc643ff0e95783ca7fae
[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" "4fd87847353594c3ddb42da23bea0d9c68f40840b156bc643ff0e95783ca7fae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fd87847353594c3ddb42da23bea0d9c68f40840b156bc643ff0e95783ca7fae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fd87847353594c3ddb42da23bea0d9c68f40840b156bc643ff0e95783ca7fae", kill_on_drop: false }`
[INFO] [stdout] 4fd87847353594c3ddb42da23bea0d9c68f40840b156bc643ff0e95783ca7fae
[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] 6671c4996b0413df03bdf50d74a92f4b5171f81f36940bf8b121b2a24564d0bb
[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" "6671c4996b0413df03bdf50d74a92f4b5171f81f36940bf8b121b2a24564d0bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]    Compiling openssl v0.10.28
[INFO] [stderr]    Compiling openssl-sys v0.9.54
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]    Compiling tokio-macros v0.2.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking tokio v0.2.11
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]     Checking hyper v0.13.2
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking reqwest v0.10.1
[INFO] [stderr]     Checking guessing_game_viggin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting guessing_game_viggin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/lib/config.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib/config.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:34
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `guessing_game_viggin`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name errors src/bin/errors/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern futures=/opt/rustwide/target/debug/deps/libfutures-da92c8e56caf5621.rmeta --extern mygrep=/opt/rustwide/target/debug/deps/libmygrep-31a7cccdcbd623e4.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-915afbb154a8b0b0.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-f142b2f5a98adb4e.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-893241e52c654c06.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-a43d8337550dea68.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6671c4996b0413df03bdf50d74a92f4b5171f81f36940bf8b121b2a24564d0bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6671c4996b0413df03bdf50d74a92f4b5171f81f36940bf8b121b2a24564d0bb", kill_on_drop: false }`
[INFO] [stdout] 6671c4996b0413df03bdf50d74a92f4b5171f81f36940bf8b121b2a24564d0bb