[INFO] cloning repository https://github.com/Axemen/rust_search
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Axemen/rust_search" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxemen%2Frust_search", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxemen%2Frust_search'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2714724e09f8caca3ee302a0b2edb2b6336f1e8f
[INFO] documenting Axemen/rust_search against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxemen%2Frust_search" "/workspace/builds/worker-31/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-31/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Axemen/rust_search on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Axemen/rust_search
[INFO] finished tweaking git repo https://github.com/Axemen/rust_search
[INFO] tweaked toml for git repo https://github.com/Axemen/rust_search written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate git repo https://github.com/Axemen/rust_search already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31676b6e629ae4bdcdfeab5fde7b98c2ef355034caf63b72b79339dce477709f
[INFO] running `Command { std: "docker" "start" "-a" "31676b6e629ae4bdcdfeab5fde7b98c2ef355034caf63b72b79339dce477709f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31676b6e629ae4bdcdfeab5fde7b98c2ef355034caf63b72b79339dce477709f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31676b6e629ae4bdcdfeab5fde7b98c2ef355034caf63b72b79339dce477709f", kill_on_drop: false }`
[INFO] [stdout] 31676b6e629ae4bdcdfeab5fde7b98c2ef355034caf63b72b79339dce477709f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2231f14749135eb916d98f3df461cbb79949ddfdcb941a0b572e6ea95e96b57
[INFO] running `Command { std: "docker" "start" "-a" "f2231f14749135eb916d98f3df461cbb79949ddfdcb941a0b572e6ea95e96b57", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]     Checking search v0.1.0 (/opt/rustwide/workdir/search)
[INFO] [stdout] warning: unused unary operation that must be used
[INFO] [stdout]    --> search/src/lib.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 164 |                 *scores.entry(*doc_id).or_insert(num / den);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the unary operation produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 164 |                 let _ = *scores.entry(*doc_id).or_insert(num / den);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting rust_search v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.61s
[INFO] running `Command { std: "docker" "inspect" "f2231f14749135eb916d98f3df461cbb79949ddfdcb941a0b572e6ea95e96b57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2231f14749135eb916d98f3df461cbb79949ddfdcb941a0b572e6ea95e96b57", kill_on_drop: false }`
[INFO] [stdout] f2231f14749135eb916d98f3df461cbb79949ddfdcb941a0b572e6ea95e96b57