[INFO] fetching crate bibtex 0.0.1...
[INFO] testing bibtex-0.0.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate bibtex 0.0.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate bibtex 0.0.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7dc3a38b820c88120ac8975a4b49c2caec1daec91c1bbf9c152f5faa66e92c1
[INFO] running `Command { std: "docker" "start" "-a" "d7dc3a38b820c88120ac8975a4b49c2caec1daec91c1bbf9c152f5faa66e92c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7dc3a38b820c88120ac8975a4b49c2caec1daec91c1bbf9c152f5faa66e92c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7dc3a38b820c88120ac8975a4b49c2caec1daec91c1bbf9c152f5faa66e92c1", kill_on_drop: false }`
[INFO] [stdout] d7dc3a38b820c88120ac8975a4b49c2caec1daec91c1bbf9c152f5faa66e92c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b538708f32b2b8741deaf02eb993514ccb7adeaa86f41f05c872d6de58bea2f
[INFO] running `Command { std: "docker" "start" "-a" "0b538708f32b2b8741deaf02eb993514ccb7adeaa86f41f05c872d6de58bea2f", 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 0.97s
[INFO] running `Command { std: "docker" "inspect" "0b538708f32b2b8741deaf02eb993514ccb7adeaa86f41f05c872d6de58bea2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b538708f32b2b8741deaf02eb993514ccb7adeaa86f41f05c872d6de58bea2f", kill_on_drop: false }`
[INFO] [stdout] 0b538708f32b2b8741deaf02eb993514ccb7adeaa86f41f05c872d6de58bea2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7679ef4dc441deb14e14d3969bdd98d5101350e19670e39fc4c2463e08b218a1
[INFO] running `Command { std: "docker" "start" "-a" "7679ef4dc441deb14e14d3969bdd98d5101350e19670e39fc4c2463e08b218a1", kill_on_drop: false }`
[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 0.63s
[INFO] running `Command { std: "docker" "inspect" "7679ef4dc441deb14e14d3969bdd98d5101350e19670e39fc4c2463e08b218a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7679ef4dc441deb14e14d3969bdd98d5101350e19670e39fc4c2463e08b218a1", kill_on_drop: false }`
[INFO] [stdout] 7679ef4dc441deb14e14d3969bdd98d5101350e19670e39fc4c2463e08b218a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1970a44354d33cbaed65a03d24f195c6eeaeab28c521c6b2179ad0a5c97482f1
[INFO] running `Command { std: "docker" "start" "-a" "1970a44354d33cbaed65a03d24f195c6eeaeab28c521c6b2179ad0a5c97482f1", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: associated function is never used: `cite_key`
[INFO] [stdout] running 1 test
[INFO] [stderr]   --> src/entry.rs:17:8
[INFO] [stdout] test test::serialization ... ok
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 17 |     fn cite_key(&self) -> &str {
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stdout] 
[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 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bibtex-a7b4ec121b592da4)
[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" "1970a44354d33cbaed65a03d24f195c6eeaeab28c521c6b2179ad0a5c97482f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1970a44354d33cbaed65a03d24f195c6eeaeab28c521c6b2179ad0a5c97482f1", kill_on_drop: false }`
[INFO] [stdout] 1970a44354d33cbaed65a03d24f195c6eeaeab28c521c6b2179ad0a5c97482f1