[INFO] fetching crate bibtex 0.0.1...
[INFO] checking bibtex-0.0.1 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate bibtex 0.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate bibtex 0.0.1 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "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-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7c7fd5414c12b2e3347234c60a75e29a2af55b98ef031dc996d1ec62f212f87
[INFO] running `Command { std: "docker" "start" "-a" "a7c7fd5414c12b2e3347234c60a75e29a2af55b98ef031dc996d1ec62f212f87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7c7fd5414c12b2e3347234c60a75e29a2af55b98ef031dc996d1ec62f212f87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7c7fd5414c12b2e3347234c60a75e29a2af55b98ef031dc996d1ec62f212f87", kill_on_drop: false }`
[INFO] [stdout] a7c7fd5414c12b2e3347234c60a75e29a2af55b98ef031dc996d1ec62f212f87
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d30e70b6020551ad87d943a32dab0e364c51d5ec644a1f015c51e1471fdd2caf
[INFO] running `Command { std: "docker" "start" "-a" "d30e70b6020551ad87d943a32dab0e364c51d5ec644a1f015c51e1471fdd2caf", kill_on_drop: false }`
[INFO] [stderr]     Checking bibtex v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `cite_key`, `entry_type`, and `field` are never used
[INFO] [stdout]   --> src/entry.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<'a> Entry<'a> {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn cite_key(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn entry_type(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn field(&self, field: &str) -> &str {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `cite_key`, `entry_type`, and `field` are never used
[INFO] [stdout]   --> src/entry.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<'a> Entry<'a> {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn cite_key(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn entry_type(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn field(&self, field: &str) -> &str {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "d30e70b6020551ad87d943a32dab0e364c51d5ec644a1f015c51e1471fdd2caf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d30e70b6020551ad87d943a32dab0e364c51d5ec644a1f015c51e1471fdd2caf", kill_on_drop: false }`
[INFO] [stdout] d30e70b6020551ad87d943a32dab0e364c51d5ec644a1f015c51e1471fdd2caf
