[INFO] cloning repository https://github.com/estebanpablo89/rust_logs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/estebanpablo89/rust_logs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Festebanpablo89%2Frust_logs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Festebanpablo89%2Frust_logs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d15ee2049bff1fa8fe1da293d597b3ce8cbd4fa
[INFO] checking estebanpablo89/rust_logs against try#51b1964e35e5e26f8cd938940f0da6f7b5cc54fc for pr-138176
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Festebanpablo89%2Frust_logs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/estebanpablo89/rust_logs on toolchain 51b1964e35e5e26f8cd938940f0da6f7b5cc54fc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/estebanpablo89/rust_logs
[INFO] finished tweaking git repo https://github.com/estebanpablo89/rust_logs
[INFO] tweaked toml for git repo https://github.com/estebanpablo89/rust_logs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/estebanpablo89/rust_logs 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" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "fetch" "--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-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c84cd25a21f11eabfcea6aa0be93f1cc53cb730925517273de8acb4eac805ceb
[INFO] running `Command { std: "docker" "start" "-a" "c84cd25a21f11eabfcea6aa0be93f1cc53cb730925517273de8acb4eac805ceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c84cd25a21f11eabfcea6aa0be93f1cc53cb730925517273de8acb4eac805ceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c84cd25a21f11eabfcea6aa0be93f1cc53cb730925517273de8acb4eac805ceb", kill_on_drop: false }`
[INFO] [stdout] c84cd25a21f11eabfcea6aa0be93f1cc53cb730925517273de8acb4eac805ceb
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61261adb181113dbd8b210fc8e317e8565d452b1fcf40798ac035984702b9a09
[INFO] running `Command { std: "docker" "start" "-a" "61261adb181113dbd8b210fc8e317e8565d452b1fcf40798ac035984702b9a09", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_logs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `validate_email` is never used
[INFO] [stdout]   --> src/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn validate_email(email: String) -> Result<(), Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `divide` is never used
[INFO] [stdout]   --> src/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn divide (a:f64, b:f64) -> Result<f64, Error > {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `validate_email` is never used
[INFO] [stdout]   --> src/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn validate_email(email: String) -> Result<(), Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `divide` is never used
[INFO] [stdout]   --> src/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn divide (a:f64, b:f64) -> Result<f64, Error > {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "61261adb181113dbd8b210fc8e317e8565d452b1fcf40798ac035984702b9a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61261adb181113dbd8b210fc8e317e8565d452b1fcf40798ac035984702b9a09", kill_on_drop: false }`
[INFO] [stdout] 61261adb181113dbd8b210fc8e317e8565d452b1fcf40798ac035984702b9a09