[INFO] cloning repository https://github.com/zaki-yama-labs/rust-bicycle-book-wordcount
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zaki-yama-labs/rust-bicycle-book-wordcount" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaki-yama-labs%2Frust-bicycle-book-wordcount", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaki-yama-labs%2Frust-bicycle-book-wordcount'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 922a6f03fda59747eff1561ee947732d96bd7897
[INFO] checking zaki-yama-labs/rust-bicycle-book-wordcount against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaki-yama-labs%2Frust-bicycle-book-wordcount" "/workspace/builds/worker-33/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-33/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zaki-yama-labs/rust-bicycle-book-wordcount on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zaki-yama-labs/rust-bicycle-book-wordcount
[INFO] finished tweaking git repo https://github.com/zaki-yama-labs/rust-bicycle-book-wordcount
[INFO] tweaked toml for git repo https://github.com/zaki-yama-labs/rust-bicycle-book-wordcount written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate git repo https://github.com/zaki-yama-labs/rust-bicycle-book-wordcount already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 840a688d1462bc63fe0183ebbaa9ccfdda3a62a10b97fbb9fa9a4190b342a4d2
[INFO] running `Command { std: "docker" "start" "-a" "840a688d1462bc63fe0183ebbaa9ccfdda3a62a10b97fbb9fa9a4190b342a4d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "840a688d1462bc63fe0183ebbaa9ccfdda3a62a10b97fbb9fa9a4190b342a4d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "840a688d1462bc63fe0183ebbaa9ccfdda3a62a10b97fbb9fa9a4190b342a4d2", kill_on_drop: false }`
[INFO] [stdout] 840a688d1462bc63fe0183ebbaa9ccfdda3a62a10b97fbb9fa9a4190b342a4d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3955fd7cde147c06302ed2b9a11f5fb86101b9555738a64a1c8e5b8d396f328f
[INFO] running `Command { std: "docker" "start" "-a" "3955fd7cde147c06302ed2b9a11f5fb86101b9555738a64a1c8e5b8d396f328f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking zaki-yama-bicycle-book-wordcount v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]    --> src/lib.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | use std::io;
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/lib.rs:136:1
[INFO] [stdout]     |
[INFO] [stdout] 136 | / macro_rules! assert_map {
[INFO] [stdout] 137 | |   ($expr: expr, {$($key: expr => $value:expr),*}) => {
[INFO] [stdout] 138 | |     $(assert_eq!($expr[$key], $value));*
[INFO] [stdout] 139 | |   };
[INFO] [stdout] 140 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.52s
[INFO] running `Command { std: "docker" "inspect" "3955fd7cde147c06302ed2b9a11f5fb86101b9555738a64a1c8e5b8d396f328f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3955fd7cde147c06302ed2b9a11f5fb86101b9555738a64a1c8e5b8d396f328f", kill_on_drop: false }`
[INFO] [stdout] 3955fd7cde147c06302ed2b9a11f5fb86101b9555738a64a1c8e5b8d396f328f