[INFO] cloning repository https://github.com/itsmenewbie03/rs-lyrics-player [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/itsmenewbie03/rs-lyrics-player" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitsmenewbie03%2Frs-lyrics-player", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitsmenewbie03%2Frs-lyrics-player'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4abcc57aa8de6cef062a09906aac1587b456e0b2 [INFO] checking itsmenewbie03/rs-lyrics-player against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitsmenewbie03%2Frs-lyrics-player" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/itsmenewbie03/rs-lyrics-player [INFO] finished tweaking git repo https://github.com/itsmenewbie03/rs-lyrics-player [INFO] tweaked toml for git repo https://github.com/itsmenewbie03/rs-lyrics-player written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/itsmenewbie03/rs-lyrics-player on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/itsmenewbie03/rs-lyrics-player 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 92283a51d5c0d46d38ad2de98aa4e4137ef21af12958f6f5f395766c39b84f54 [INFO] running `Command { std: "docker" "start" "-a" "92283a51d5c0d46d38ad2de98aa4e4137ef21af12958f6f5f395766c39b84f54", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "92283a51d5c0d46d38ad2de98aa4e4137ef21af12958f6f5f395766c39b84f54", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92283a51d5c0d46d38ad2de98aa4e4137ef21af12958f6f5f395766c39b84f54", kill_on_drop: false }` [INFO] [stdout] 92283a51d5c0d46d38ad2de98aa4e4137ef21af12958f6f5f395766c39b84f54 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e0527a9254eeeee2a72dbc8d6ebeecc939c76ffbc721104b9b3801c8938df5f6 [INFO] running `Command { std: "docker" "start" "-a" "e0527a9254eeeee2a72dbc8d6ebeecc939c76ffbc721104b9b3801c8938df5f6", kill_on_drop: false }` [INFO] [stderr] Checking aho-corasick v1.1.2 [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Checking figlet-rs v0.1.5 [INFO] [stderr] Checking bit-set v0.5.3 [INFO] [stderr] Checking regex-automata v0.4.3 [INFO] [stderr] Checking regex v1.10.2 [INFO] [stderr] Checking fancy-regex v0.12.0 [INFO] [stderr] Checking rs-lyrics-player v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:53:21 [INFO] [stdout] | [INFO] [stdout] 53 | let mut lines: Vec = lyrics [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/main.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | fn iter(&self) -> LyricsIterator { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 41 | fn iter(&self) -> LyricsIterator<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:108:36 [INFO] [stdout] | [INFO] [stdout] 108 | let lyrics = Lyrics::from_file(PathBuf::from_str("res/lyrics.txt").unwrap()) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rs-lyrics-player` (bin "rs-lyrics-player") due to 1 previous error; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:53:21 [INFO] [stdout] | [INFO] [stdout] 53 | let mut lines: Vec = lyrics [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/main.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | fn iter(&self) -> LyricsIterator { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 41 | fn iter(&self) -> LyricsIterator<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:108:36 [INFO] [stdout] | [INFO] [stdout] 108 | let lyrics = Lyrics::from_file(PathBuf::from_str("res/lyrics.txt").unwrap()) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rs-lyrics-player` (bin "rs-lyrics-player" test) due to 1 previous error; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "e0527a9254eeeee2a72dbc8d6ebeecc939c76ffbc721104b9b3801c8938df5f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e0527a9254eeeee2a72dbc8d6ebeecc939c76ffbc721104b9b3801c8938df5f6", kill_on_drop: false }` [INFO] [stdout] e0527a9254eeeee2a72dbc8d6ebeecc939c76ffbc721104b9b3801c8938df5f6