[INFO] cloning repository https://github.com/MasterShifuCsgo/Rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MasterShifuCsgo/Rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasterShifuCsgo%2FRust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasterShifuCsgo%2FRust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 87f4077cbff3983157132850f537bde0f6390d49
[INFO] checking MasterShifuCsgo/Rust-practice against try#969026c535f4240ff7866ef11207dfda18a26af6 for pr-146504
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasterShifuCsgo%2FRust-practice" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MasterShifuCsgo/Rust-practice
[INFO] finished tweaking git repo https://github.com/MasterShifuCsgo/Rust-practice
[INFO] tweaked toml for git repo https://github.com/MasterShifuCsgo/Rust-practice written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MasterShifuCsgo/Rust-practice on toolchain 969026c535f4240ff7866ef11207dfda18a26af6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+969026c535f4240ff7866ef11207dfda18a26af6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MasterShifuCsgo/Rust-practice 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" "+969026c535f4240ff7866ef11207dfda18a26af6" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+969026c535f4240ff7866ef11207dfda18a26af6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94398111ff22ec7530bbe105401b4359f4d9fb90e485d5ed190a708990f91cff
[INFO] running `Command { std: "docker" "start" "-a" "94398111ff22ec7530bbe105401b4359f4d9fb90e485d5ed190a708990f91cff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94398111ff22ec7530bbe105401b4359f4d9fb90e485d5ed190a708990f91cff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94398111ff22ec7530bbe105401b4359f4d9fb90e485d5ed190a708990f91cff", kill_on_drop: false }`
[INFO] [stdout] 94398111ff22ec7530bbe105401b4359f4d9fb90e485d5ed190a708990f91cff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+969026c535f4240ff7866ef11207dfda18a26af6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a5a35938c2e493a68c11002276f9477f4acd6a2dff6aba278ed583560185139
[INFO] running `Command { std: "docker" "start" "-a" "3a5a35938c2e493a68c11002276f9477f4acd6a2dff6aba278ed583560185139", kill_on_drop: false }`
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]     Checking learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `LOG_FILE_NAME` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | const LOG_FILE_NAME: &str = "logs.log";
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `open_or_create_log_file` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn open_or_create_log_file() -> File {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sleep` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn sleep(ms: u64) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_current_time` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn get_current_time() -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `logln` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn logln<T: std::fmt::Display>(msg: T) -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_file_logger` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn start_file_logger() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOG_FILE_NAME` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | const LOG_FILE_NAME: &str = "logs.log";
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `open_or_create_log_file` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn open_or_create_log_file() -> File {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sleep` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn sleep(ms: u64) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_current_time` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn get_current_time() -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `logln` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn logln<T: std::fmt::Display>(msg: T) -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_file_logger` is never used
[INFO] [stdout]   --> src/file_system/file_logger.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn start_file_logger() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "3a5a35938c2e493a68c11002276f9477f4acd6a2dff6aba278ed583560185139", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a5a35938c2e493a68c11002276f9477f4acd6a2dff6aba278ed583560185139", kill_on_drop: false }`
[INFO] [stdout] 3a5a35938c2e493a68c11002276f9477f4acd6a2dff6aba278ed583560185139