[INFO] fetching crate bibliothek 0.2.0...
[INFO] checking bibliothek-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate bibliothek 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate bibliothek 0.2.0
[INFO] finished tweaking crates.io crate bibliothek 0.2.0
[INFO] tweaked toml for crates.io crate bibliothek 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bibliothek 0.2.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 69 packages to latest compatible versions
[INFO] [stderr]       Adding biblatex v0.8.1 (available: v0.11.0)
[INFO] [stderr]       Adding hayagriva v0.3.2 (available: v0.9.1)
[INFO] [stderr]       Adding litrs v0.4.2 (available: v1.0.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 5e441bd4b71e8a9d4aee9d32f7a46bcab4a0809930fc8ced6a0246a560a987ee
[INFO] running `Command { std: "docker" "start" "-a" "5e441bd4b71e8a9d4aee9d32f7a46bcab4a0809930fc8ced6a0246a560a987ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e441bd4b71e8a9d4aee9d32f7a46bcab4a0809930fc8ced6a0246a560a987ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e441bd4b71e8a9d4aee9d32f7a46bcab4a0809930fc8ced6a0246a560a987ee", kill_on_drop: false }`
[INFO] [stdout] 5e441bd4b71e8a9d4aee9d32f7a46bcab4a0809930fc8ced6a0246a560a987ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 703f9bcd22b56db7147c3ee2471b534b1a41a85826d911d94ecb53851da7ff92
[INFO] running `Command { std: "docker" "start" "-a" "703f9bcd22b56db7147c3ee2471b534b1a41a85826d911d94ecb53851da7ff92", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling icu_normalizer_data v2.1.1
[INFO] [stderr]    Compiling icu_properties_data v2.1.1
[INFO] [stderr]     Checking siphasher v1.0.1
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]     Checking unscanny v0.1.0
[INFO] [stderr]     Checking numerals v0.1.4
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling tinyvec v1.10.0
[INFO] [stderr]     Checking phf_shared v0.11.3
[INFO] [stderr]     Checking phf v0.11.3
[INFO] [stderr]     Checking litrs v0.4.2
[INFO] [stderr]    Compiling isolang v2.4.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.25
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking biblatex v0.8.1
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]    Compiling zerovec v0.11.5
[INFO] [stderr]    Compiling zerotrie v0.2.3
[INFO] [stderr]     Checking tinystr v0.8.2
[INFO] [stderr]     Checking potential_utf v0.1.4
[INFO] [stderr]     Checking icu_locale_core v2.1.1
[INFO] [stderr]     Checking unic-langid-impl v0.9.6
[INFO] [stderr]     Checking icu_collections v2.1.1
[INFO] [stderr]     Checking unic-langid v0.9.6
[INFO] [stderr]     Checking icu_provider v2.1.1
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking icu_properties v2.1.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking hayagriva v0.3.2
[INFO] [stderr]     Checking bibliothek v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]    --> src/lib.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     bib.append_bibtex_file(&source_path)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]   --> src/bib.rs:26:96
[INFO] [stdout]    |
[INFO] [stdout] 26 |       pub fn append_bibtex_file(&mut self, path: impl AsRef<Path>) -> Result<usize, BibtexError> {
[INFO] [stdout]    |  ________________________________________________________________________________________________^
[INFO] [stdout] 27 | |         let source = fs::read_to_string(path).unwrap();
[INFO] [stdout] 28 | |
[INFO] [stdout] 29 | |         self.append_bibtex(&source)
[INFO] [stdout] 30 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]   --> src/bib.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         self.append_bibtex(&source)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]   --> src/bib.rs:32:81
[INFO] [stdout]    |
[INFO] [stdout] 32 |       pub fn append_bibtex(&mut self, source: &str) -> Result<usize, BibtexError> {
[INFO] [stdout]    |  _________________________________________________________________________________^
[INFO] [stdout] 33 | |         let bibtex = biblatex::Bibliography::parse(source).unwrap();
[INFO] [stdout] 34 | |
[INFO] [stdout] 35 | |         let raw_entries = hayagriva::io::from_biblatex(&bibtex).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |         Ok(count)
[INFO] [stdout] 65 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]   --> src/bib.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         Ok(count)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bibliothek` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]    --> src/lib.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     bib.append_bibtex_file(&source_path)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]   --> src/bib.rs:26:96
[INFO] [stdout]    |
[INFO] [stdout] 26 |       pub fn append_bibtex_file(&mut self, path: impl AsRef<Path>) -> Result<usize, BibtexError> {
[INFO] [stdout]    |  ________________________________________________________________________________________________^
[INFO] [stdout] 27 | |         let source = fs::read_to_string(path).unwrap();
[INFO] [stdout] 28 | |
[INFO] [stdout] 29 | |         self.append_bibtex(&source)
[INFO] [stdout] 30 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]   --> src/bib.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         self.append_bibtex(&source)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]   --> src/bib.rs:32:81
[INFO] [stdout]    |
[INFO] [stdout] 32 |       pub fn append_bibtex(&mut self, source: &str) -> Result<usize, BibtexError> {
[INFO] [stdout]    |  _________________________________________________________________________________^
[INFO] [stdout] 33 | |         let bibtex = biblatex::Bibliography::parse(source).unwrap();
[INFO] [stdout] 34 | |
[INFO] [stdout] 35 | |         let raw_entries = hayagriva::io::from_biblatex(&bibtex).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |         Ok(count)
[INFO] [stdout] 65 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, BibtexError>
[INFO] [stdout]   --> src/bib.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         Ok(count)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bibliothek` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "703f9bcd22b56db7147c3ee2471b534b1a41a85826d911d94ecb53851da7ff92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "703f9bcd22b56db7147c3ee2471b534b1a41a85826d911d94ecb53851da7ff92", kill_on_drop: false }`
[INFO] [stdout] 703f9bcd22b56db7147c3ee2471b534b1a41a85826d911d94ecb53851da7ff92
