[INFO] cloning repository https://github.com/kosmas12/project_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kosmas12/project_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkosmas12%2Fproject_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkosmas12%2Fproject_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d578937c500d97e13973d867bf31d8beb5f1367
[INFO] checking kosmas12/project_rust against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkosmas12%2Fproject_rust" "/workspace/builds/worker-61/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-61/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kosmas12/project_rust 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/kosmas12/project_rust
[INFO] finished tweaking git repo https://github.com/kosmas12/project_rust
[INFO] tweaked toml for git repo https://github.com/kosmas12/project_rust written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] crate git repo https://github.com/kosmas12/project_rust 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-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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] eeb1f9d688b321394873f768f34ff7bd7a94a4c36fa5e8bfab88add5f72d185a
[INFO] running `Command { std: "docker" "start" "-a" "eeb1f9d688b321394873f768f34ff7bd7a94a4c36fa5e8bfab88add5f72d185a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eeb1f9d688b321394873f768f34ff7bd7a94a4c36fa5e8bfab88add5f72d185a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeb1f9d688b321394873f768f34ff7bd7a94a4c36fa5e8bfab88add5f72d185a", kill_on_drop: false }`
[INFO] [stdout] eeb1f9d688b321394873f768f34ff7bd7a94a4c36fa5e8bfab88add5f72d185a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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] 3ee5dc05490a7f12d598e757f67909587c72f59d9ed82453b1aaf20a7a52e5bb
[INFO] running `Command { std: "docker" "start" "-a" "3ee5dc05490a7f12d598e757f67909587c72f59d9ed82453b1aaf20a7a52e5bb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking project_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]   --> src/save_files.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 | use std::fs::{OpenOptions, File};
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `self`
[INFO] [stdout]   --> src/save_files.rs:26:15
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::io::{self, Write, BufRead};
[INFO] [stdout]    |               ^^^^         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]   --> src/save_files.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::process::exit;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]   --> src/save_files.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 | use std::fs::{OpenOptions, File};
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `self`
[INFO] [stdout]   --> src/save_files.rs:26:15
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::io::{self, Write, BufRead};
[INFO] [stdout]    |               ^^^^         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]   --> src/save_files.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::process::exit;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]   --> src/save_files.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::io::{self, Write, BufRead};
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `save_file`
[INFO] [stdout]   --> src/save_files.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn save(save_file: String, level: i32) {
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_save_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `level`
[INFO] [stdout]   --> src/save_files.rs:41:32
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn save(save_file: String, level: i32) {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_level`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]   --> src/save_files.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::io::{self, Write, BufRead};
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `save_file`
[INFO] [stdout]   --> src/save_files.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn save(save_file: String, level: i32) {
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_save_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `level`
[INFO] [stdout]   --> src/save_files.rs:41:32
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn save(save_file: String, level: i32) {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_level`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `save`
[INFO] [stdout]   --> src/save_files.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn save(save_file: String, level: i32) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ask_for_savefile`
[INFO] [stdout]   --> src/save_files.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn ask_for_savefile() -> OsString {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/save_files.rs:70:39
[INFO] [stdout]    |
[INFO] [stdout] 70 |         if save_choice < num_files && save_choice >= 0 {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `save`
[INFO] [stdout]   --> src/save_files.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn save(save_file: String, level: i32) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ask_for_savefile`
[INFO] [stdout]   --> src/save_files.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn ask_for_savefile() -> OsString {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/save_files.rs:70:39
[INFO] [stdout]    |
[INFO] [stdout] 70 |         if save_choice < num_files && save_choice >= 0 {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "3ee5dc05490a7f12d598e757f67909587c72f59d9ed82453b1aaf20a7a52e5bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ee5dc05490a7f12d598e757f67909587c72f59d9ed82453b1aaf20a7a52e5bb", kill_on_drop: false }`
[INFO] [stdout] 3ee5dc05490a7f12d598e757f67909587c72f59d9ed82453b1aaf20a7a52e5bb