[INFO] cloning repository https://github.com/Axect/Music_Tournament [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Axect/Music_Tournament" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxect%2FMusic_Tournament", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxect%2FMusic_Tournament'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 99b7b17483691a9ff1906d63aa4cd5045dcf9987 [INFO] checking Axect/Music_Tournament against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxect%2FMusic_Tournament" "/workspace/builds/worker-78/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-78/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Axect/Music_Tournament on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Axect/Music_Tournament [INFO] finished tweaking git repo https://github.com/Axect/Music_Tournament [INFO] tweaked toml for git repo https://github.com/Axect/Music_Tournament written to /workspace/builds/worker-78/source/Cargo.toml [INFO] crate git repo https://github.com/Axect/Music_Tournament already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 202386830c29d3dbfdeb4b88f932f098d5084cb1f952dd79a9a079171ca804aa [INFO] running `Command { std: "docker" "start" "-a" "202386830c29d3dbfdeb4b88f932f098d5084cb1f952dd79a9a079171ca804aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "202386830c29d3dbfdeb4b88f932f098d5084cb1f952dd79a9a079171ca804aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "202386830c29d3dbfdeb4b88f932f098d5084cb1f952dd79a9a079171ca804aa", kill_on_drop: false }` [INFO] [stdout] 202386830c29d3dbfdeb4b88f932f098d5084cb1f952dd79a9a079171ca804aa [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 128f84ce0fc15d91e1a35f160a7623165f91781346e356c5530aa6d57811c8db [INFO] running `Command { std: "docker" "start" "-a" "128f84ce0fc15d91e1a35f160a7623165f91781346e356c5530aa6d57811c8db", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.44 [INFO] [stderr] Checking rand_core v0.3.0 [INFO] [stderr] Checking rand_core v0.2.2 [INFO] [stderr] Checking rand v0.5.5 [INFO] [stderr] Checking Music_Tournament v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `DirEntry` [INFO] [stdout] --> src/main.rs:7:21 [INFO] [stdout] | [INFO] [stdout] 7 | use std::fs::{self, DirEntry, File}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `DirEntry` [INFO] [stdout] --> src/main.rs:7:21 [INFO] [stdout] | [INFO] [stdout] 7 | use std::fs::{self, DirEntry, File}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `Music_Tournament` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `music_tournament` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | write_mp3_list("save_0.txt", &result); [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: crate `Music_Tournament` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `music_tournament` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:99:13 [INFO] [stdout] | [INFO] [stdout] 99 | write_mp3_list("temp_1.txt", &result2); [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/main.rs:101:13 [INFO] [stdout] | [INFO] [stdout] 101 | write_mp3_list("log.txt", &vec![temp_write]); [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/main.rs:110:5 [INFO] [stdout] | [INFO] [stdout] 110 | write_mp3_list("save_1.txt", &result2); [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/main.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | write_mp3_list("save_0.txt", &result); [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/main.rs:99:13 [INFO] [stdout] | [INFO] [stdout] 99 | write_mp3_list("temp_1.txt", &result2); [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/main.rs:101:13 [INFO] [stdout] | [INFO] [stdout] 101 | write_mp3_list("log.txt", &vec![temp_write]); [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/main.rs:110:5 [INFO] [stdout] | [INFO] [stdout] 110 | write_mp3_list("save_1.txt", &result2); [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: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 32.57s [INFO] running `Command { std: "docker" "inspect" "128f84ce0fc15d91e1a35f160a7623165f91781346e356c5530aa6d57811c8db", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "128f84ce0fc15d91e1a35f160a7623165f91781346e356c5530aa6d57811c8db", kill_on_drop: false }` [INFO] [stdout] 128f84ce0fc15d91e1a35f160a7623165f91781346e356c5530aa6d57811c8db