[INFO] cloning repository https://github.com/BrianMiltonJr/MusicHandler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BrianMiltonJr/MusicHandler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrianMiltonJr%2FMusicHandler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrianMiltonJr%2FMusicHandler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31c2128412b456a8386eb1a430f2d67b41d25021
[INFO] testing BrianMiltonJr/MusicHandler against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrianMiltonJr%2FMusicHandler" "/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/BrianMiltonJr/MusicHandler on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BrianMiltonJr/MusicHandler
[INFO] finished tweaking git repo https://github.com/BrianMiltonJr/MusicHandler
[INFO] tweaked toml for git repo https://github.com/BrianMiltonJr/MusicHandler written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/BrianMiltonJr/MusicHandler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e5d2aaae9962dc725a68307d99fc6e96451bb9c74c808745d95126408fc9514
[INFO] running `Command { std: "docker" "start" "-a" "0e5d2aaae9962dc725a68307d99fc6e96451bb9c74c808745d95126408fc9514", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e5d2aaae9962dc725a68307d99fc6e96451bb9c74c808745d95126408fc9514", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e5d2aaae9962dc725a68307d99fc6e96451bb9c74c808745d95126408fc9514", kill_on_drop: false }`
[INFO] [stdout] 0e5d2aaae9962dc725a68307d99fc6e96451bb9c74c808745d95126408fc9514
[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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5f930f6721ae3e401713fd0f1aaccb7ee2093bd6ec5bfa697df6f80a2924899
[INFO] running `Command { std: "docker" "start" "-a" "b5f930f6721ae3e401713fd0f1aaccb7ee2093bd6ec5bfa697df6f80a2924899", kill_on_drop: false }`
[INFO] [stderr]    Compiling home v0.5.3
[INFO] [stderr]    Compiling music-application v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `tag`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     tag: &'a String
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_music`
[INFO] [stdout]    --> src/main.rs:181:4
[INFO] [stdout]     |
[INFO] [stdout] 181 | fn get_music(dir: String) -> Vec<String> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 | /         match song.music.exists() {
[INFO] [stdout] 123 | |             true => Ok(fs::remove_file(song.music)),
[INFO] [stdout] 124 | |             false => Err(false)
[INFO] [stdout] 125 | |         };
[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:153:5
[INFO] [stdout]     |
[INFO] [stdout] 153 | /     match playlist_path.exists() {
[INFO] [stdout] 154 | |         true => Ok(fs::remove_file(playlist_path)),
[INFO] [stdout] 155 | |         false => Err(false),
[INFO] [stdout] 156 | |     };
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "b5f930f6721ae3e401713fd0f1aaccb7ee2093bd6ec5bfa697df6f80a2924899", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5f930f6721ae3e401713fd0f1aaccb7ee2093bd6ec5bfa697df6f80a2924899", kill_on_drop: false }`
[INFO] [stdout] b5f930f6721ae3e401713fd0f1aaccb7ee2093bd6ec5bfa697df6f80a2924899
[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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2468de9535648fbbdb2f3509e8a8e51b23b0eba2b1812c7566bbc9f69b4ea646
[INFO] running `Command { std: "docker" "start" "-a" "2468de9535648fbbdb2f3509e8a8e51b23b0eba2b1812c7566bbc9f69b4ea646", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling music-application v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `tag`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     tag: &'a String
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_music`
[INFO] [stdout]    --> src/main.rs:181:4
[INFO] [stdout]     |
[INFO] [stdout] 181 | fn get_music(dir: String) -> Vec<String> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 | /         match song.music.exists() {
[INFO] [stdout] 123 | |             true => Ok(fs::remove_file(song.music)),
[INFO] [stdout] 124 | |             false => Err(false)
[INFO] [stdout] 125 | |         };
[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:153:5
[INFO] [stdout]     |
[INFO] [stdout] 153 | /     match playlist_path.exists() {
[INFO] [stdout] 154 | |         true => Ok(fs::remove_file(playlist_path)),
[INFO] [stdout] 155 | |         false => Err(false),
[INFO] [stdout] 156 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2468de9535648fbbdb2f3509e8a8e51b23b0eba2b1812c7566bbc9f69b4ea646", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2468de9535648fbbdb2f3509e8a8e51b23b0eba2b1812c7566bbc9f69b4ea646", kill_on_drop: false }`
[INFO] [stdout] 2468de9535648fbbdb2f3509e8a8e51b23b0eba2b1812c7566bbc9f69b4ea646
[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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7923e711769dfd0a55f247e675ad0441c1bd4180dd556ca99f8c17df38bde46b
[INFO] running `Command { std: "docker" "start" "-a" "7923e711769dfd0a55f247e675ad0441c1bd4180dd556ca99f8c17df38bde46b", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: field is never read: `tag`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 8 |     tag: &'a String
[INFO] [stdout] 
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_music`
[INFO] [stderr]    --> src/main.rs:181:4
[INFO] [stderr]     |
[INFO] [stderr] 181 | fn get_music(dir: String) -> Vec<String> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 | /         match song.music.exists() {
[INFO] [stderr] 123 | |             true => Ok(fs::remove_file(song.music)),
[INFO] [stderr] 124 | |             false => Err(false)
[INFO] [stderr] 125 | |         };
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 | /     match playlist_path.exists() {
[INFO] [stderr] 154 | |         true => Ok(fs::remove_file(playlist_path)),
[INFO] [stderr] 155 | |         false => Err(false),
[INFO] [stderr] 156 | |     };
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/music_application-c951daa0a73b20bf)
[INFO] running `Command { std: "docker" "inspect" "7923e711769dfd0a55f247e675ad0441c1bd4180dd556ca99f8c17df38bde46b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7923e711769dfd0a55f247e675ad0441c1bd4180dd556ca99f8c17df38bde46b", kill_on_drop: false }`
[INFO] [stdout] 7923e711769dfd0a55f247e675ad0441c1bd4180dd556ca99f8c17df38bde46b