[INFO] cloning repository https://github.com/dpadrosa/summer_music_player
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dpadrosa/summer_music_player" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpadrosa%2Fsummer_music_player", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpadrosa%2Fsummer_music_player'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eac96f57570d9a35b626c4fcbbeda7d5a9110291
[INFO] checking dpadrosa/summer_music_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%2Fdpadrosa%2Fsummer_music_player" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dpadrosa/summer_music_player
[INFO] finished tweaking git repo https://github.com/dpadrosa/summer_music_player
[INFO] tweaked toml for git repo https://github.com/dpadrosa/summer_music_player written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dpadrosa/summer_music_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/dpadrosa/summer_music_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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a435dea6e0e7bad8ff491dcb8e7265fddeb6f360682777cf07c422e688030e17
[INFO] running `Command { std: "docker" "start" "-a" "a435dea6e0e7bad8ff491dcb8e7265fddeb6f360682777cf07c422e688030e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a435dea6e0e7bad8ff491dcb8e7265fddeb6f360682777cf07c422e688030e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a435dea6e0e7bad8ff491dcb8e7265fddeb6f360682777cf07c422e688030e17", kill_on_drop: false }`
[INFO] [stdout] a435dea6e0e7bad8ff491dcb8e7265fddeb6f360682777cf07c422e688030e17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 43064deaa93d349be14d576289e1f382f2cacc05b6492ed535ee468011127f59
[INFO] running `Command { std: "docker" "start" "-a" "43064deaa93d349be14d576289e1f382f2cacc05b6492ed535ee468011127f59", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
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[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling neon-build v0.10.1
[INFO] [stderr]    Compiling num-integer v0.1.45
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[INFO] [stderr]     Checking smallvec v1.10.0
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[INFO] [stderr]    Compiling libwebp-sys v0.9.4
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking uuid v1.3.4
[INFO] [stderr]     Checking symphonia v0.5.3
[INFO] [stderr]     Checking jpeg-decoder v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]     Checking tiff v0.9.0
[INFO] [stderr]     Checking mp3-duration v0.1.10
[INFO] [stderr]     Checking webp v0.2.6
[INFO] [stderr]     Checking image v0.24.7
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking predicates v2.1.5
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling syn-mid v0.5.3
[INFO] [stderr]    Compiling neon-macros v0.10.1
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling derive_builder_core v0.12.0
[INFO] [stderr]    Compiling derive_builder_macro v0.12.0
[INFO] [stderr]     Checking derive_builder v0.12.0
[INFO] [stderr]     Checking mockall v0.11.4
[INFO] [stderr]     Checking scanner v0.1.0 (/opt/rustwide/workdir/packages/scanner)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> packages/scanner/src/metadata.rs:206:46
[INFO] [stdout]     |
[INFO] [stdout] 206 |         metadata.duration = duration.map(|d| ((d as u32) * time_base.numer / time_base.denom));
[INFO] [stdout]     |                                              ^                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 206 -         metadata.duration = duration.map(|d| ((d as u32) * time_base.numer / time_base.denom));
[INFO] [stdout] 206 +         metadata.duration = duration.map(|d| (d as u32) * time_base.numer / time_base.denom );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MetadataError`
[INFO] [stdout]  --> packages/scanner/src/scanner.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::error::{MetadataError, ScannerError};
[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 imports: `AudioMetadata` and `self`
[INFO] [stdout]   --> packages/scanner/src/scanner.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     self, AudioMetadata, FlacMetadataExtractor, MetadataExtractor, Mp3MetadataExtractor,
[INFO] [stdout]    |     ^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> packages/scanner/src/metadata.rs:206:46
[INFO] [stdout]     |
[INFO] [stdout] 206 |         metadata.duration = duration.map(|d| ((d as u32) * time_base.numer / time_base.denom));
[INFO] [stdout]     |                                              ^                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 206 -         metadata.duration = duration.map(|d| ((d as u32) * time_base.numer / time_base.denom));
[INFO] [stdout] 206 +         metadata.duration = duration.map(|d| (d as u32) * time_base.numer / time_base.denom );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> packages/scanner/src/scanner.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     self, AudioMetadata, FlacMetadataExtractor, MetadataExtractor, Mp3MetadataExtractor,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ThumbnailError` is never constructed
[INFO] [stdout]   --> packages/scanner/src/error.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct ThumbnailError {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_optional_field_buffer` is never used
[INFO] [stdout]   --> packages/scanner/src/js.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn set_optional_field_buffer(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TagReader` is never used
[INFO] [stdout]   --> packages/scanner/src/scanner.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait TagReader {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> packages/scanner/src/metadata.rs:266:50
[INFO] [stdout]     |
[INFO] [stdout] 266 |         metadata.year = tag.year().map(|y: &str| y.parse().unwrap());
[INFO] [stdout]     |                                                  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ThumbnailError` is never constructed
[INFO] [stdout]   --> packages/scanner/src/error.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct ThumbnailError {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_optional_field_buffer` is never used
[INFO] [stdout]   --> packages/scanner/src/js.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn set_optional_field_buffer(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TagReader` is never used
[INFO] [stdout]   --> packages/scanner/src/scanner.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait TagReader {
[INFO] [stdout]    |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> packages/scanner/src/metadata.rs:266:50
[INFO] [stdout]     |
[INFO] [stdout] 266 |         metadata.year = tag.year().map(|y: &str| y.parse().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 `scanner` (lib) due to 1 previous error; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `scanner` (lib test) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "43064deaa93d349be14d576289e1f382f2cacc05b6492ed535ee468011127f59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43064deaa93d349be14d576289e1f382f2cacc05b6492ed535ee468011127f59", kill_on_drop: false }`
[INFO] [stdout] 43064deaa93d349be14d576289e1f382f2cacc05b6492ed535ee468011127f59