[INFO] fetching crate bibtex 0.0.1...
[INFO] testing bibtex-0.0.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate bibtex 0.0.1 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate bibtex 0.0.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bibtex 0.0.1
[INFO] finished tweaking crates.io crate bibtex 0.0.1
[INFO] tweaked toml for crates.io crate bibtex 0.0.1 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89a7d4a155827fc410de77436c240f5b2b687d7d14cfeac09106f1dea97e3fc8
[INFO] running `Command { std: "docker" "start" "-a" "89a7d4a155827fc410de77436c240f5b2b687d7d14cfeac09106f1dea97e3fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89a7d4a155827fc410de77436c240f5b2b687d7d14cfeac09106f1dea97e3fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89a7d4a155827fc410de77436c240f5b2b687d7d14cfeac09106f1dea97e3fc8", kill_on_drop: false }`
[INFO] [stdout] 89a7d4a155827fc410de77436c240f5b2b687d7d14cfeac09106f1dea97e3fc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d17cd7034899ed3e50fc068a09e49585d17b35b7d11cfc76485cbec89a286d51
[INFO] running `Command { std: "docker" "start" "-a" "d17cd7034899ed3e50fc068a09e49585d17b35b7d11cfc76485cbec89a286d51", kill_on_drop: false }`
[INFO] [stderr]    Compiling bibtex v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `cite_key`
[INFO] [stdout]   --> src/entry.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn cite_key(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `entry_type`
[INFO] [stdout]   --> src/entry.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn entry_type(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `field`
[INFO] [stdout]   --> src/entry.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn field(&self, field: &str) -> &str {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/entry.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         &self.sort();
[INFO] [stdout]    |         ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let _ = &self.sort();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/entry.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         &self.fields.sort();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let _ = &self.fields.sort();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "d17cd7034899ed3e50fc068a09e49585d17b35b7d11cfc76485cbec89a286d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d17cd7034899ed3e50fc068a09e49585d17b35b7d11cfc76485cbec89a286d51", kill_on_drop: false }`
[INFO] [stdout] d17cd7034899ed3e50fc068a09e49585d17b35b7d11cfc76485cbec89a286d51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d8d8a913b90d9419850c9e3a63194a112ced90a9b5c077843aff4cbef20676a
[INFO] running `Command { std: "docker" "start" "-a" "2d8d8a913b90d9419850c9e3a63194a112ced90a9b5c077843aff4cbef20676a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: associated function is never used: `cite_key`
[INFO] [stdout]   --> src/entry.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn cite_key(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bibtex v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `entry_type`
[INFO] [stdout]   --> src/entry.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn entry_type(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `field`
[INFO] [stdout]   --> src/entry.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn field(&self, field: &str) -> &str {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/entry.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         &self.sort();
[INFO] [stdout]    |         ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let _ = &self.sort();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/entry.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         &self.fields.sort();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let _ = &self.fields.sort();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cite_key`
[INFO] [stdout]   --> src/entry.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn cite_key(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `entry_type`
[INFO] [stdout]   --> src/entry.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn entry_type(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `field`
[INFO] [stdout]   --> src/entry.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn field(&self, field: &str) -> &str {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/entry.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         &self.sort();
[INFO] [stdout]    |         ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let _ = &self.sort();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/entry.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         &self.fields.sort();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let _ = &self.fields.sort();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "2d8d8a913b90d9419850c9e3a63194a112ced90a9b5c077843aff4cbef20676a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d8d8a913b90d9419850c9e3a63194a112ced90a9b5c077843aff4cbef20676a", kill_on_drop: false }`
[INFO] [stdout] 2d8d8a913b90d9419850c9e3a63194a112ced90a9b5c077843aff4cbef20676a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 08ae7f329cdd09c4c133427361d7d86e09af6ff7b4130725ac749660f1c8c925
[INFO] running `Command { std: "docker" "start" "-a" "08ae7f329cdd09c4c133427361d7d86e09af6ff7b4130725ac749660f1c8c925", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `cite_key`
[INFO] [stderr]   --> src/entry.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn cite_key(&self) -> &str {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `entry_type`
[INFO] [stderr]   --> src/entry.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn entry_type(&self) -> &str {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `field`
[INFO] [stderr]   --> src/entry.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn field(&self, field: &str) -> &str {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/entry.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         &self.sort();
[INFO] [stderr]    |         ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let _ = &self.sort();
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/entry.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |         &self.fields.sort();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let _ = &self.fields.sort();
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `bibtex` (lib) generated 5 warnings
[INFO] [stderr] warning: `bibtex` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bibtex-a7b4ec121b592da4)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::serialization ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bibtex
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "08ae7f329cdd09c4c133427361d7d86e09af6ff7b4130725ac749660f1c8c925", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08ae7f329cdd09c4c133427361d7d86e09af6ff7b4130725ac749660f1c8c925", kill_on_drop: false }`
[INFO] [stdout] 08ae7f329cdd09c4c133427361d7d86e09af6ff7b4130725ac749660f1c8c925