[INFO] cloning repository https://github.com/mpdrescher/latex-preprocessor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mpdrescher/latex-preprocessor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpdrescher%2Flatex-preprocessor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpdrescher%2Flatex-preprocessor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36a31eea87ed73b30434a1526a5f39ddf41f47e7
[INFO] testing mpdrescher/latex-preprocessor against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpdrescher%2Flatex-preprocessor" "/workspace/builds/worker-92/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-92/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mpdrescher/latex-preprocessor on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mpdrescher/latex-preprocessor
[INFO] finished tweaking git repo https://github.com/mpdrescher/latex-preprocessor
[INFO] tweaked toml for git repo https://github.com/mpdrescher/latex-preprocessor written to /workspace/builds/worker-92/source/Cargo.toml
[INFO] crate git repo https://github.com/mpdrescher/latex-preprocessor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1564d2c3b73e041718e1081a56a0fdd56487019b796ca816e257013ee883320d
[INFO] running `Command { std: "docker" "start" "-a" "1564d2c3b73e041718e1081a56a0fdd56487019b796ca816e257013ee883320d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1564d2c3b73e041718e1081a56a0fdd56487019b796ca816e257013ee883320d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1564d2c3b73e041718e1081a56a0fdd56487019b796ca816e257013ee883320d", kill_on_drop: false }`
[INFO] [stdout] 1564d2c3b73e041718e1081a56a0fdd56487019b796ca816e257013ee883320d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e7bb892983572708910cedf4c7c241e1111d74d66e216ea21af0d9ef2b4d036
[INFO] running `Command { std: "docker" "start" "-a" "4e7bb892983572708910cedf4c7c241e1111d74d66e216ea21af0d9ef2b4d036", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling latex-preprocessor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/main.rs:181:44
[INFO] [stdout]     |
[INFO] [stdout] 181 |       string.into_iter().fold(String::new(), (|mut acc, x| {
[INFO] [stdout]     |  ____________________________________________^
[INFO] [stdout] 182 | |         acc.push_str(prefix);
[INFO] [stdout] 183 | |         acc.push_str(&x);
[INFO] [stdout] 184 | |         acc.push_str(suffix); 
[INFO] [stdout] 185 | |         acc
[INFO] [stdout] 186 | |     }))
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 181 |     string.into_iter().fold(String::new(), |mut acc, x| {
[INFO] [stdout] 182 |         acc.push_str(prefix);
[INFO] [stdout] 183 |         acc.push_str(&x);
[INFO] [stdout] 184 |         acc.push_str(suffix); 
[INFO] [stdout] 185 |         acc
[INFO] [stdout] 186 |     })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.83s
[INFO] running `Command { std: "docker" "inspect" "4e7bb892983572708910cedf4c7c241e1111d74d66e216ea21af0d9ef2b4d036", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e7bb892983572708910cedf4c7c241e1111d74d66e216ea21af0d9ef2b4d036", kill_on_drop: false }`
[INFO] [stdout] 4e7bb892983572708910cedf4c7c241e1111d74d66e216ea21af0d9ef2b4d036
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 088098be6fa77bb87f9b357dc19375155a6d83779faa891ce41582ac98500637
[INFO] running `Command { std: "docker" "start" "-a" "088098be6fa77bb87f9b357dc19375155a6d83779faa891ce41582ac98500637", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling latex-preprocessor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/main.rs:181:44
[INFO] [stdout]     |
[INFO] [stdout] 181 |       string.into_iter().fold(String::new(), (|mut acc, x| {
[INFO] [stdout]     |  ____________________________________________^
[INFO] [stdout] 182 | |         acc.push_str(prefix);
[INFO] [stdout] 183 | |         acc.push_str(&x);
[INFO] [stdout] 184 | |         acc.push_str(suffix); 
[INFO] [stdout] 185 | |         acc
[INFO] [stdout] 186 | |     }))
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 181 |     string.into_iter().fold(String::new(), |mut acc, x| {
[INFO] [stdout] 182 |         acc.push_str(prefix);
[INFO] [stdout] 183 |         acc.push_str(&x);
[INFO] [stdout] 184 |         acc.push_str(suffix); 
[INFO] [stdout] 185 |         acc
[INFO] [stdout] 186 |     })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "088098be6fa77bb87f9b357dc19375155a6d83779faa891ce41582ac98500637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "088098be6fa77bb87f9b357dc19375155a6d83779faa891ce41582ac98500637", kill_on_drop: false }`
[INFO] [stdout] 088098be6fa77bb87f9b357dc19375155a6d83779faa891ce41582ac98500637
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 19118924aec3dc3091e943adeaadefe637b7e556f333b8dc31ffe07f5ef417e6
[INFO] running `Command { std: "docker" "start" "-a" "19118924aec3dc3091e943adeaadefe637b7e556f333b8dc31ffe07f5ef417e6", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/main.rs:181:44
[INFO] [stderr]     |
[INFO] [stderr] 181 |       string.into_iter().fold(String::new(), (|mut acc, x| {
[INFO] [stderr]     |  ____________________________________________^
[INFO] [stderr] 182 | |         acc.push_str(prefix);
[INFO] [stderr] 183 | |         acc.push_str(&x);
[INFO] [stderr] 184 | |         acc.push_str(suffix); 
[INFO] [stderr] 185 | |         acc
[INFO] [stderr] 186 | |     }))
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 181 |     string.into_iter().fold(String::new(), |mut acc, x| {
[INFO] [stderr] 182 |         acc.push_str(prefix);
[INFO] [stderr] 183 |         acc.push_str(&x);
[INFO] [stderr] 184 |         acc.push_str(suffix); 
[INFO] [stderr] 185 |         acc
[INFO] [stderr] 186 |     })
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `latex-preprocessor` (bin "latex-preprocessor" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/latex_preprocessor-d5b716b509551de7)
[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" "19118924aec3dc3091e943adeaadefe637b7e556f333b8dc31ffe07f5ef417e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19118924aec3dc3091e943adeaadefe637b7e556f333b8dc31ffe07f5ef417e6", kill_on_drop: false }`
[INFO] [stdout] 19118924aec3dc3091e943adeaadefe637b7e556f333b8dc31ffe07f5ef417e6