[INFO] cloning repository https://github.com/weiyinfu/learnRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/weiyinfu/learnRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweiyinfu%2FlearnRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweiyinfu%2FlearnRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b92f974f76c58bb7409cbe26d320d3d66d04aef
[INFO] documenting weiyinfu/learnRust against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweiyinfu%2FlearnRust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/weiyinfu/learnRust on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/weiyinfu/learnRust
[INFO] finished tweaking git repo https://github.com/weiyinfu/learnRust
[INFO] tweaked toml for git repo https://github.com/weiyinfu/learnRust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/weiyinfu/learnRust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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-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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 366022f5826256b685b5e95e3597338d893fabcdd57043e42ac1ab8b02d35dcd
[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" "366022f5826256b685b5e95e3597338d893fabcdd57043e42ac1ab8b02d35dcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "366022f5826256b685b5e95e3597338d893fabcdd57043e42ac1ab8b02d35dcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "366022f5826256b685b5e95e3597338d893fabcdd57043e42ac1ab8b02d35dcd", kill_on_drop: false }`
[INFO] [stdout] 366022f5826256b685b5e95e3597338d893fabcdd57043e42ac1ab8b02d35dcd
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bae6336a91e1db5d16496a381b5d4dd690f0700bf1d214e380a097bd06765a97
[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" "bae6336a91e1db5d16496a381b5d4dd690f0700bf1d214e380a097bd06765a97", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tokio v0.2.20
[INFO] [stderr]     Checking ferris-says v0.1.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking h2 v0.2.4
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]    Compiling pin-project-internal v0.4.9
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking pin-project v0.4.9
[INFO] [stderr]     Checking hyper v0.13.5
[INFO] [stderr]     Checking learnRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting learnRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `b`
[INFO] [stdout]   --> src/cnTest.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn b() {}
[INFO] [stdout]    |    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `haha`
[INFO] [stdout]  --> src/useFolder/one.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn haha() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `haha`
[INFO] [stdout]  --> src/useFolder/mod.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn haha() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `queenCount` should have a snake case name
[INFO] [stdout]   --> src/bin/14-基于面向对象的八皇后.rs:55:42
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn go(&mut self, x: usize, y: usize, queenCount: i32) {
[INFO] [stdout]    |                                          ^^^^^^^^^^ help: convert the identifier to snake case: `queen_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `learnRust`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name learnRust src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-b73a68b8027caf6e.rmeta --extern ferris_says=/opt/rustwide/target/debug/deps/libferris_says-c56794177a92dbac.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-ce315bc12a71173b.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-57a7edc7f441d44c.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-8323f990c1bf056d.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-bb97f1a9d345d5eb.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-d80c5659c3302ca4.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-13ba81d2b68b0205.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-0689fdeca988f424.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "bae6336a91e1db5d16496a381b5d4dd690f0700bf1d214e380a097bd06765a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bae6336a91e1db5d16496a381b5d4dd690f0700bf1d214e380a097bd06765a97", kill_on_drop: false }`
[INFO] [stdout] bae6336a91e1db5d16496a381b5d4dd690f0700bf1d214e380a097bd06765a97