[INFO] cloning repository https://github.com/Little-Captain/dive-into-rust-of-fcc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Little-Captain/dive-into-rust-of-fcc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLittle-Captain%2Fdive-into-rust-of-fcc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLittle-Captain%2Fdive-into-rust-of-fcc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36807d3bef5728e0c2894fbf31cb03c86bc02ce6
[INFO] documenting Little-Captain/dive-into-rust-of-fcc against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLittle-Captain%2Fdive-into-rust-of-fcc" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Little-Captain/dive-into-rust-of-fcc 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 git repo https://github.com/Little-Captain/dive-into-rust-of-fcc
[INFO] finished tweaking git repo https://github.com/Little-Captain/dive-into-rust-of-fcc
[INFO] tweaked toml for git repo https://github.com/Little-Captain/dive-into-rust-of-fcc written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Little-Captain/dive-into-rust-of-fcc 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] f91ed33c77c07a456a5a2007bc32d85091084d3a9d223a368649d7bd5da32dfe
[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" "f91ed33c77c07a456a5a2007bc32d85091084d3a9d223a368649d7bd5da32dfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f91ed33c77c07a456a5a2007bc32d85091084d3a9d223a368649d7bd5da32dfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91ed33c77c07a456a5a2007bc32d85091084d3a9d223a368649d7bd5da32dfe", kill_on_drop: false }`
[INFO] [stdout] f91ed33c77c07a456a5a2007bc32d85091084d3a9d223a368649d7bd5da32dfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 525d1b8c38b98f9c390e139dfcb7a29f18826bd510e2da3cd7b8538d0f60b1bd
[INFO] running `Command { std: "docker" "start" "-a" "525d1b8c38b98f9c390e139dfcb7a29f18826bd510e2da3cd7b8538d0f60b1bd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting dive-into-rust-of-fcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/ch02/third.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let b = (0);
[INFO] [stdout]    |             ^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `dog` should have an upper camel case name
[INFO] [stdout]    --> src/ch02/third.rs:213:9
[INFO] [stdout]     |
[INFO] [stdout] 213 |         dog = 1,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case: `Dog`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `cat` should have an upper camel case name
[INFO] [stdout]    --> src/ch02/third.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |         cat = 200,
[INFO] [stdout]     |         ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `tiger` should have an upper camel case name
[INFO] [stdout]    --> src/ch02/third.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |         tiger,
[INFO] [stdout]     |         ^^^^^ help: convert the identifier to upper camel case: `Tiger`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/ch09/first.rs:65:47
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 $( map.insert($key, $val); ) *;
[INFO] [stdout]    |                                               ^ help: remove this semicolon
[INFO] [stdout] ...
[INFO] [stdout] 70 |     let counts = hashmap!['A' => 0, 'C' => 0, 'G' => 0, 'T' => 0];
[INFO] [stdout]    |                  ------------------------------------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.11s
[INFO] running `Command { std: "docker" "inspect" "525d1b8c38b98f9c390e139dfcb7a29f18826bd510e2da3cd7b8538d0f60b1bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "525d1b8c38b98f9c390e139dfcb7a29f18826bd510e2da3cd7b8538d0f60b1bd", kill_on_drop: false }`
[INFO] [stdout] 525d1b8c38b98f9c390e139dfcb7a29f18826bd510e2da3cd7b8538d0f60b1bd