[INFO] cloning repository https://github.com/oli-clive-griffin/music-notation-types
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oli-clive-griffin/music-notation-types" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foli-clive-griffin%2Fmusic-notation-types", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foli-clive-griffin%2Fmusic-notation-types'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c11e56e026a2bd8f0d7bdaf6dd21f55fea6bf43
[INFO] checking oli-clive-griffin/music-notation-types against master#613bdd49978298648ed05ace086bd1ecad54b44a for pr-136458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foli-clive-griffin%2Fmusic-notation-types" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oli-clive-griffin/music-notation-types on toolchain 613bdd49978298648ed05ace086bd1ecad54b44a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oli-clive-griffin/music-notation-types
[INFO] finished tweaking git repo https://github.com/oli-clive-griffin/music-notation-types
[INFO] tweaked toml for git repo https://github.com/oli-clive-griffin/music-notation-types written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/oli-clive-griffin/music-notation-types 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" "+613bdd49978298648ed05ace086bd1ecad54b44a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0cf679635411f27a3f552385f8c200bef0508c052f9ba6b56f0d5a90d100c70
[INFO] running `Command { std: "docker" "start" "-a" "d0cf679635411f27a3f552385f8c200bef0508c052f9ba6b56f0d5a90d100c70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0cf679635411f27a3f552385f8c200bef0508c052f9ba6b56f0d5a90d100c70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0cf679635411f27a3f552385f8c200bef0508c052f9ba6b56f0d5a90d100c70", kill_on_drop: false }`
[INFO] [stdout] d0cf679635411f27a3f552385f8c200bef0508c052f9ba6b56f0d5a90d100c70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ad772464f65e45f5d40e18c2ac1c9205a8c221447e55a203c9d2b4666ab77fb
[INFO] running `Command { std: "docker" "start" "-a" "3ad772464f65e45f5d40e18c2ac1c9205a8c221447e55a203c9d2b4666ab77fb", kill_on_drop: false }`
[INFO] [stderr]     Checking music-notation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/lib.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let piece = Piece {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `piece`
[INFO] [stdout]    --> src/lib.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let piece = Piece {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_piece`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NoteLetter` is never used
[INFO] [stdout]  --> src/lib.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum NoteLetter {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NoteOctave` is never used
[INFO] [stdout]   --> src/lib.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type NoteOctave = u8;
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SemitoneModifier` is never used
[INFO] [stdout]   --> src/lib.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | enum SemitoneModifier {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Note` is never constructed
[INFO] [stdout]   --> src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct Note(NoteLetter, Option<SemitoneModifier>, NoteOctave);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BaseNoteDuration` is never used
[INFO] [stdout]   --> src/lib.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum BaseNoteDuration {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NoteDuration` is never constructed
[INFO] [stdout]   --> src/lib.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct NoteDuration {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Accent` is never constructed
[INFO] [stdout]   --> src/lib.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Accent(
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HeldNote` is never constructed
[INFO] [stdout]   --> src/lib.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct HeldNote {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Duration` is never used
[INFO] [stdout]   --> src/lib.rs:57:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | type Duration = u8;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NoteInPlace` is never constructed
[INFO] [stdout]   --> src/lib.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct NoteInPlace {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NotesPerBar` is never used
[INFO] [stdout]   --> src/lib.rs:64:6
[INFO] [stdout]    |
[INFO] [stdout] 64 | type NotesPerBar = usize;
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TimeSignature` is never constructed
[INFO] [stdout]   --> src/lib.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct TimeSignature(NotesPerBar, BaseNoteDuration);
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VoiceBar` is never constructed
[INFO] [stdout]   --> src/lib.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | struct VoiceBar {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bar` is never constructed
[INFO] [stdout]   --> src/lib.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Bar<'a> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KeySignature` is never constructed
[INFO] [stdout]   --> src/lib.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct KeySignature {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/lib.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct Piece<'a> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NoteLetter` is never used
[INFO] [stdout]  --> src/lib.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum NoteLetter {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NoteOctave` is never used
[INFO] [stdout]   --> src/lib.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type NoteOctave = u8;
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SemitoneModifier` is never used
[INFO] [stdout]   --> src/lib.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | enum SemitoneModifier {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Note` is never constructed
[INFO] [stdout]   --> src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct Note(NoteLetter, Option<SemitoneModifier>, NoteOctave);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BaseNoteDuration` is never used
[INFO] [stdout]   --> src/lib.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum BaseNoteDuration {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NoteDuration` is never constructed
[INFO] [stdout]   --> src/lib.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct NoteDuration {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Accent` is never constructed
[INFO] [stdout]   --> src/lib.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Accent(
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HeldNote` is never constructed
[INFO] [stdout]   --> src/lib.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct HeldNote {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Duration` is never used
[INFO] [stdout]   --> src/lib.rs:57:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | type Duration = u8;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NoteInPlace` is never constructed
[INFO] [stdout]   --> src/lib.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct NoteInPlace {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NotesPerBar` is never used
[INFO] [stdout]   --> src/lib.rs:64:6
[INFO] [stdout]    |
[INFO] [stdout] 64 | type NotesPerBar = usize;
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TimeSignature` is never constructed
[INFO] [stdout]   --> src/lib.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct TimeSignature(NotesPerBar, BaseNoteDuration);
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VoiceBar` is never constructed
[INFO] [stdout]   --> src/lib.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | struct VoiceBar {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bar` is never constructed
[INFO] [stdout]   --> src/lib.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Bar<'a> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> src/lib.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn example() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KeySignature` is never constructed
[INFO] [stdout]   --> src/lib.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct KeySignature {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/lib.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct Piece<'a> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> src/lib.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn example() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "3ad772464f65e45f5d40e18c2ac1c9205a8c221447e55a203c9d2b4666ab77fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ad772464f65e45f5d40e18c2ac1c9205a8c221447e55a203c9d2b4666ab77fb", kill_on_drop: false }`
[INFO] [stdout] 3ad772464f65e45f5d40e18c2ac1c9205a8c221447e55a203c9d2b4666ab77fb