[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] testing kosmas12/project_rust against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkosmas12%2Fproject_rust" "/workspace/builds/worker-71/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-71/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kosmas12/project_rust on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-71/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d328bc396d1582b1a89a3a24fdea38b64b197dad74af7d736ac6b55317c12afa
[INFO] running `Command { std: "docker" "start" "-a" "d328bc396d1582b1a89a3a24fdea38b64b197dad74af7d736ac6b55317c12afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d328bc396d1582b1a89a3a24fdea38b64b197dad74af7d736ac6b55317c12afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d328bc396d1582b1a89a3a24fdea38b64b197dad74af7d736ac6b55317c12afa", kill_on_drop: false }`
[INFO] [stdout] d328bc396d1582b1a89a3a24fdea38b64b197dad74af7d736ac6b55317c12afa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e65c2547b2c6fbc7eec46dc2b726f5fa54222f6f7a99e830ed67d6dee9395ed
[INFO] running `Command { std: "docker" "start" "-a" "5e65c2547b2c6fbc7eec46dc2b726f5fa54222f6f7a99e830ed67d6dee9395ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: `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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "5e65c2547b2c6fbc7eec46dc2b726f5fa54222f6f7a99e830ed67d6dee9395ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e65c2547b2c6fbc7eec46dc2b726f5fa54222f6f7a99e830ed67d6dee9395ed", kill_on_drop: false }`
[INFO] [stdout] 5e65c2547b2c6fbc7eec46dc2b726f5fa54222f6f7a99e830ed67d6dee9395ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a57fa76e36c1d9388e6bd758b7ddfb4e1233ab9f4b6463af733c82b6d79de48
[INFO] running `Command { std: "docker" "start" "-a" "5a57fa76e36c1d9388e6bd758b7ddfb4e1233ab9f4b6463af733c82b6d79de48", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling 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: `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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.99s
[INFO] running `Command { std: "docker" "inspect" "5a57fa76e36c1d9388e6bd758b7ddfb4e1233ab9f4b6463af733c82b6d79de48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a57fa76e36c1d9388e6bd758b7ddfb4e1233ab9f4b6463af733c82b6d79de48", kill_on_drop: false }`
[INFO] [stdout] 5a57fa76e36c1d9388e6bd758b7ddfb4e1233ab9f4b6463af733c82b6d79de48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 02bd3c9a36faba26e74eaafc98f11ec6b06985421d9cd13d7cdddb9ab675977c
[INFO] running `Command { std: "docker" "start" "-a" "02bd3c9a36faba26e74eaafc98f11ec6b06985421d9cd13d7cdddb9ab675977c", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]   --> src/save_files.rs:23:28
[INFO] [stderr]    |
[INFO] [stderr] 23 | use std::fs::{OpenOptions, File};
[INFO] [stderr]    |                            ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufRead`, `self`
[INFO] [stderr]   --> src/save_files.rs:26:15
[INFO] [stderr]    |
[INFO] [stderr] 26 | use std::io::{self, Write, BufRead};
[INFO] [stderr]    |               ^^^^         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::exit`
[INFO] [stderr]   --> src/save_files.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | use std::process::exit;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]   --> src/save_files.rs:26:21
[INFO] [stderr]    |
[INFO] [stderr] 26 | use std::io::{self, Write, BufRead};
[INFO] [stderr]    |                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `save_file`
[INFO] [stderr]   --> src/save_files.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn save(save_file: String, level: i32) {
[INFO] [stderr]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_save_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `level`
[INFO] [stderr]   --> src/save_files.rs:41:32
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn save(save_file: String, level: i32) {
[INFO] [stderr]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_level`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `save`
[INFO] [stderr]   --> src/save_files.rs:41:8
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn save(save_file: String, level: i32) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ask_for_savefile`
[INFO] [stderr]   --> src/save_files.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn ask_for_savefile() -> OsString {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/save_files.rs:70:39
[INFO] [stderr]    |
[INFO] [stderr] 70 |         if save_choice < num_files && save_choice >= 0 {
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `project_rust` (bin "project_rust" test) generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/project_rust-5e6a29cb73305df6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "02bd3c9a36faba26e74eaafc98f11ec6b06985421d9cd13d7cdddb9ab675977c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02bd3c9a36faba26e74eaafc98f11ec6b06985421d9cd13d7cdddb9ab675977c", kill_on_drop: false }`
[INFO] [stdout] 02bd3c9a36faba26e74eaafc98f11ec6b06985421d9cd13d7cdddb9ab675977c