[INFO] cloning repository https://github.com/psatomas/regular-expressions
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/psatomas/regular-expressions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fregular-expressions", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fregular-expressions'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b80dc7f86d48e7cfa63da753ce8c99dbcf98a2e6
[INFO] checking psatomas/regular-expressions against try#fe84aa3583bb2681b5d0580316bde6d58ccfd6b5 for pr-154149-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fregular-expressions" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/psatomas/regular-expressions
[INFO] finished tweaking git repo https://github.com/psatomas/regular-expressions
[INFO] tweaked toml for git repo https://github.com/psatomas/regular-expressions written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/psatomas/regular-expressions on toolchain fe84aa3583bb2681b5d0580316bde6d58ccfd6b5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe84aa3583bb2681b5d0580316bde6d58ccfd6b5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/psatomas/regular-expressions already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe84aa3583bb2681b5d0580316bde6d58ccfd6b5" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+fe84aa3583bb2681b5d0580316bde6d58ccfd6b5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b54c1c05feada59416450516a5d94a7914969caa26d31231d83dce7539ea2e7
[INFO] running `Command { std: "docker" "start" "-a" "4b54c1c05feada59416450516a5d94a7914969caa26d31231d83dce7539ea2e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b54c1c05feada59416450516a5d94a7914969caa26d31231d83dce7539ea2e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b54c1c05feada59416450516a5d94a7914969caa26d31231d83dce7539ea2e7", kill_on_drop: false }`
[INFO] [stdout] 4b54c1c05feada59416450516a5d94a7914969caa26d31231d83dce7539ea2e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+fe84aa3583bb2681b5d0580316bde6d58ccfd6b5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c3fb137848fa19e4de3debaa1e786a983f73a520a72f5ec8aeaf663ee80e608
[INFO] running `Command { std: "docker" "start" "-a" "4c3fb137848fa19e4de3debaa1e786a983f73a520a72f5ec8aeaf663ee80e608", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking regular-expressions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `timestamp`, `category`, `endpoint`, and `id` are never read
[INFO] [stdout]   --> src/bin/coding_challenges.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 90 | struct LogEntry {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 91 |     timestamp: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 92 |     category: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 93 |     endpoint: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 94 |     id: String,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LogEntry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `timestamp`, `category`, `endpoint`, and `id` are never read
[INFO] [stdout]   --> src/bin/coding_challenges.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 90 | struct LogEntry {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 91 |     timestamp: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 92 |     category: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 93 |     endpoint: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 94 |     id: String,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LogEntry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.12s
[INFO] running `Command { std: "docker" "inspect" "4c3fb137848fa19e4de3debaa1e786a983f73a520a72f5ec8aeaf663ee80e608", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c3fb137848fa19e4de3debaa1e786a983f73a520a72f5ec8aeaf663ee80e608", kill_on_drop: false }`
[INFO] [stdout] 4c3fb137848fa19e4de3debaa1e786a983f73a520a72f5ec8aeaf663ee80e608