[INFO] cloning repository https://github.com/Arktikus/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/Arktikus/guessing_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArktikus%2Fguessing_game", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArktikus%2Fguessing_game'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2e2d27f052845ddd1d1542db1fb8e42ed7a2cf72 [INFO] checking Arktikus/guessing_game against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArktikus%2Fguessing_game" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Arktikus/guessing_game [INFO] finished tweaking git repo https://github.com/Arktikus/guessing_game [INFO] tweaked toml for git repo https://github.com/Arktikus/guessing_game written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Arktikus/guessing_game on toolchain b1f2594eac607c1f051534800237eeedb5590a49 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Arktikus/guessing_game 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d629e57fdd13deaa8b89851db68c9e282aeffb791290f8869214d7eb913cb4dd [INFO] running `Command { std: "docker" "start" "-a" "d629e57fdd13deaa8b89851db68c9e282aeffb791290f8869214d7eb913cb4dd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d629e57fdd13deaa8b89851db68c9e282aeffb791290f8869214d7eb913cb4dd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d629e57fdd13deaa8b89851db68c9e282aeffb791290f8869214d7eb913cb4dd", kill_on_drop: false }` [INFO] [stdout] d629e57fdd13deaa8b89851db68c9e282aeffb791290f8869214d7eb913cb4dd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a2a87a09a5574eb928dd36b5df83dca0bdf9b998c3309f39de7ce9856e50979f [INFO] running `Command { std: "docker" "start" "-a" "a2a87a09a5574eb928dd36b5df83dca0bdf9b998c3309f39de7ce9856e50979f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.146 [INFO] [stderr] Compiling proc-macro2 v1.0.60 [INFO] [stderr] Compiling unicode-ident v1.0.9 [INFO] [stderr] Compiling quote v1.0.28 [INFO] [stderr] Compiling serde v1.0.164 [INFO] [stderr] Compiling serde_json v1.0.97 [INFO] [stderr] Checking itoa v1.0.6 [INFO] [stderr] Checking ryu v1.0.13 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking colored v2.0.0 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Compiling syn v2.0.18 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Compiling serde_derive v1.0.164 [INFO] [stderr] Checking guessing_game v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Value` [INFO] [stdout] --> src/main.rs:5:26 [INFO] [stdout] | [INFO] [stdout] 5 | use serde_json::{Result, Value}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `io::prelude` [INFO] [stdout] --> src/main.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::{io, io::prelude::*, process::exit, path::Path, fs, fs::File}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Value` [INFO] [stdout] --> src/main.rs:5:26 [INFO] [stdout] | [INFO] [stdout] 5 | use serde_json::{Result, Value}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | generate_json_file(); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 19 | let _ = generate_json_file(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | generate_random_number(guess); [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] 31 | let _ = generate_random_number(guess); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | write_correct_to_json(count_correct, count_incorrect); [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] 52 | let _ = write_correct_to_json(count_correct, count_incorrect); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | write_incorrect_to_json(count_correct ,count_incorrect); [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] 58 | let _ = write_incorrect_to_json(count_correct ,count_incorrect); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 90 | show_statistics(); [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] 90 | let _ = show_statistics(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `io::prelude` [INFO] [stdout] --> src/main.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::{io, io::prelude::*, process::exit, path::Path, fs, fs::File}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | generate_json_file(); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 19 | let _ = generate_json_file(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | generate_random_number(guess); [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] 31 | let _ = generate_random_number(guess); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | write_correct_to_json(count_correct, count_incorrect); [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] 52 | let _ = write_correct_to_json(count_correct, count_incorrect); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | write_incorrect_to_json(count_correct ,count_incorrect); [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] 58 | let _ = write_incorrect_to_json(count_correct ,count_incorrect); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 90 | show_statistics(); [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] 90 | let _ = show_statistics(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.97s [INFO] running `Command { std: "docker" "inspect" "a2a87a09a5574eb928dd36b5df83dca0bdf9b998c3309f39de7ce9856e50979f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a2a87a09a5574eb928dd36b5df83dca0bdf9b998c3309f39de7ce9856e50979f", kill_on_drop: false }` [INFO] [stdout] a2a87a09a5574eb928dd36b5df83dca0bdf9b998c3309f39de7ce9856e50979f