[INFO] cloning repository https://github.com/MaxLuchs/guessing_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MaxLuchs/guessing_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaxLuchs%2Fguessing_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaxLuchs%2Fguessing_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5069231d1a3ebcff2322666508eb7fe87103839f
[INFO] checking MaxLuchs/guessing_game against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaxLuchs%2Fguessing_game" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MaxLuchs/guessing_game on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MaxLuchs/guessing_game
[INFO] finished tweaking git repo https://github.com/MaxLuchs/guessing_game
[INFO] tweaked toml for git repo https://github.com/MaxLuchs/guessing_game written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/MaxLuchs/guessing_game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tramp v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88a344d2493da1df0f33ea14344b444f4eb9789f2056cff183454a7d503b9838
[INFO] running `Command { std: "docker" "start" "-a" "88a344d2493da1df0f33ea14344b444f4eb9789f2056cff183454a7d503b9838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88a344d2493da1df0f33ea14344b444f4eb9789f2056cff183454a7d503b9838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88a344d2493da1df0f33ea14344b444f4eb9789f2056cff183454a7d503b9838", kill_on_drop: false }`
[INFO] [stdout] 88a344d2493da1df0f33ea14344b444f4eb9789f2056cff183454a7d503b9838
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbc6dd9c49f1b77b4952d0745d79b5a335a9838f56fa05e261e58d716df81f98
[INFO] running `Command { std: "docker" "start" "-a" "cbc6dd9c49f1b77b4952d0745d79b5a335a9838f56fa05e261e58d716df81f98", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking tramp v0.3.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking guess v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/loop.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/recursion.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/loop.rs (1 fix)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/loop.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         stdin.read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/recursion.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         stdin.read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/recursion.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | /         buffer.trim().parse::<i32>().map(|number| {
[INFO] [stdout] 12 | |             if number == secret {
[INFO] [stdout] 13 | |                 println!("Match ... Game over");
[INFO] [stdout] 14 | |             } else if number < secret {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |             guess_secret(secret);
[INFO] [stdout] 24 | |         });
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/loop.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         stdin.read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/recursion.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         stdin.read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/recursion.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | /         buffer.trim().parse::<i32>().map(|number| {
[INFO] [stdout] 12 | |             if number == secret {
[INFO] [stdout] 13 | |                 println!("Match ... Game over");
[INFO] [stdout] 14 | |             } else if number < secret {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |             guess_secret(secret);
[INFO] [stdout] 24 | |         });
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 13s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking guess v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/recursion.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         stdin.read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/recursion.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | /         buffer.trim().parse::<i32>().map(|number| {
[INFO] [stdout] 12 | |             if number == secret {
[INFO] [stdout] 13 | |                 println!("Match ... Game over");
[INFO] [stdout] 14 | |             } else if number < secret {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |             guess_secret(secret);
[INFO] [stdout] 24 | |         });
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/loop.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         stdin.read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/recursion.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         stdin.read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/recursion.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | /         buffer.trim().parse::<i32>().map(|number| {
[INFO] [stdout] 12 | |             if number == secret {
[INFO] [stdout] 13 | |                 println!("Match ... Game over");
[INFO] [stdout] 14 | |             } else if number < secret {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |             guess_secret(secret);
[INFO] [stdout] 24 | |         });
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/loop.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         stdin.read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.93s
[INFO] running `Command { std: "docker" "inspect" "cbc6dd9c49f1b77b4952d0745d79b5a335a9838f56fa05e261e58d716df81f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbc6dd9c49f1b77b4952d0745d79b5a335a9838f56fa05e261e58d716df81f98", kill_on_drop: false }`
[INFO] [stdout] cbc6dd9c49f1b77b4952d0745d79b5a335a9838f56fa05e261e58d716df81f98