[INFO] cloning repository https://github.com/euphoriaj7/myRustNumberGuessGame
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/euphoriaj7/myRustNumberGuessGame" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuphoriaj7%2FmyRustNumberGuessGame", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuphoriaj7%2FmyRustNumberGuessGame'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f45033d064168e44fb4fb7f93bca15461b371905
[INFO] building euphoriaj7/myRustNumberGuessGame against master#ce36a966c79e109dabeef7a47fe68e5294c6d71e for pr-137044-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuphoriaj7%2FmyRustNumberGuessGame" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/euphoriaj7/myRustNumberGuessGame on toolchain ce36a966c79e109dabeef7a47fe68e5294c6d71e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ce36a966c79e109dabeef7a47fe68e5294c6d71e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/euphoriaj7/myRustNumberGuessGame
[INFO] finished tweaking git repo https://github.com/euphoriaj7/myRustNumberGuessGame
[INFO] tweaked toml for git repo https://github.com/euphoriaj7/myRustNumberGuessGame written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/euphoriaj7/myRustNumberGuessGame 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" "+ce36a966c79e109dabeef7a47fe68e5294c6d71e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+ce36a966c79e109dabeef7a47fe68e5294c6d71e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df8315019ccd7fe33bbb8edd2a5f3c7952497189832ad0811dd2799d25b446fe
[INFO] running `Command { std: "docker" "start" "-a" "df8315019ccd7fe33bbb8edd2a5f3c7952497189832ad0811dd2799d25b446fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df8315019ccd7fe33bbb8edd2a5f3c7952497189832ad0811dd2799d25b446fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df8315019ccd7fe33bbb8edd2a5f3c7952497189832ad0811dd2799d25b446fe", kill_on_drop: false }`
[INFO] [stdout] df8315019ccd7fe33bbb8edd2a5f3c7952497189832ad0811dd2799d25b446fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+ce36a966c79e109dabeef7a47fe68e5294c6d71e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ea3946a0d6cbe704be06b16d950e04c68a61b39527554cb4a1e27a13b17d20b
[INFO] running `Command { std: "docker" "start" "-a" "1ea3946a0d6cbe704be06b16d950e04c68a61b39527554cb4a1e27a13b17d20b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling numberGuessingGame v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut magic_number: i8 =rand::thread_rng().gen_range(-128..127); 
[INFO] [stdout]    |             ----^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             io::stdin().read_line(&mut guess);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |             let _ = io::stdin().read_line(&mut guess);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         io::stdin().read_line(&mut keep_playing);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let _ = io::stdin().read_line(&mut keep_playing);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.60s
[INFO] running `Command { std: "docker" "inspect" "1ea3946a0d6cbe704be06b16d950e04c68a61b39527554cb4a1e27a13b17d20b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea3946a0d6cbe704be06b16d950e04c68a61b39527554cb4a1e27a13b17d20b", kill_on_drop: false }`
[INFO] [stdout] 1ea3946a0d6cbe704be06b16d950e04c68a61b39527554cb4a1e27a13b17d20b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+ce36a966c79e109dabeef7a47fe68e5294c6d71e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 554d81f828bd37426dd2e4442b40fd03d53f3e1c625ae2eadd9db5498f354bfd
[INFO] running `Command { std: "docker" "start" "-a" "554d81f828bd37426dd2e4442b40fd03d53f3e1c625ae2eadd9db5498f354bfd", kill_on_drop: false }`
[INFO] [stderr]    Compiling numberGuessingGame v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut magic_number: i8 =rand::thread_rng().gen_range(-128..127); 
[INFO] [stdout]    |             ----^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             io::stdin().read_line(&mut guess);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |             let _ = io::stdin().read_line(&mut guess);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         io::stdin().read_line(&mut keep_playing);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let _ = io::stdin().read_line(&mut keep_playing);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "554d81f828bd37426dd2e4442b40fd03d53f3e1c625ae2eadd9db5498f354bfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "554d81f828bd37426dd2e4442b40fd03d53f3e1c625ae2eadd9db5498f354bfd", kill_on_drop: false }`
[INFO] [stdout] 554d81f828bd37426dd2e4442b40fd03d53f3e1c625ae2eadd9db5498f354bfd