[INFO] cloning repository https://github.com/nathanwhyte/latex-title-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nathanwhyte/latex-title-generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathanwhyte%2Flatex-title-generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathanwhyte%2Flatex-title-generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b904f44c372f8dbb1cf2b612028e6087561bbac1
[INFO] testing nathanwhyte/latex-title-generator against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathanwhyte%2Flatex-title-generator" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nathanwhyte/latex-title-generator 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/nathanwhyte/latex-title-generator
[INFO] finished tweaking git repo https://github.com/nathanwhyte/latex-title-generator
[INFO] tweaked toml for git repo https://github.com/nathanwhyte/latex-title-generator written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/nathanwhyte/latex-title-generator 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 0ace045232cee890c6dccaa350dbeb4f755a33df0cdd15e189757a06bbfe327d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0ace045232cee890c6dccaa350dbeb4f755a33df0cdd15e189757a06bbfe327d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ace045232cee890c6dccaa350dbeb4f755a33df0cdd15e189757a06bbfe327d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ace045232cee890c6dccaa350dbeb4f755a33df0cdd15e189757a06bbfe327d", kill_on_drop: false }`
[INFO] [stdout] 0ace045232cee890c6dccaa350dbeb4f755a33df0cdd15e189757a06bbfe327d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 273829ebfa23ee669f6a8e1434c97a1ebe5ecb6eee3d71260277cae197e45c1f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "273829ebfa23ee669f6a8e1434c97a1ebe5ecb6eee3d71260277cae197e45c1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling latex-title-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `open_file`
[INFO] [stdout]   --> src/files.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn open_file(given_path: &str) -> File {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_lines`
[INFO] [stdout]   --> src/files.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn read_lines(file: File) -> Vec<String> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "273829ebfa23ee669f6a8e1434c97a1ebe5ecb6eee3d71260277cae197e45c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "273829ebfa23ee669f6a8e1434c97a1ebe5ecb6eee3d71260277cae197e45c1f", kill_on_drop: false }`
[INFO] [stdout] 273829ebfa23ee669f6a8e1434c97a1ebe5ecb6eee3d71260277cae197e45c1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] dd17b7188613c20fde5f7746ae97cddb44db633ac06c1447ed1d415816802b32
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dd17b7188613c20fde5f7746ae97cddb44db633ac06c1447ed1d415816802b32", kill_on_drop: false }`
[INFO] [stderr]    Compiling latex-title-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `open_file`
[INFO] [stdout]   --> src/files.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn open_file(given_path: &str) -> File {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_lines`
[INFO] [stdout]   --> src/files.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn read_lines(file: File) -> Vec<String> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "dd17b7188613c20fde5f7746ae97cddb44db633ac06c1447ed1d415816802b32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd17b7188613c20fde5f7746ae97cddb44db633ac06c1447ed1d415816802b32", kill_on_drop: false }`
[INFO] [stdout] dd17b7188613c20fde5f7746ae97cddb44db633ac06c1447ed1d415816802b32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 98ba21a47676a44000c20a1fa388f6cf636da0d671fe07d3d952aca5086420ba
[INFO] running `Command { std: "docker" "start" "-a" "98ba21a47676a44000c20a1fa388f6cf636da0d671fe07d3d952aca5086420ba", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `open_file`
[INFO] [stderr]   --> src/files.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn open_file(given_path: &str) -> File {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_lines`
[INFO] [stderr]   --> src/files.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub fn read_lines(file: File) -> Vec<String> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `latex-title-generator` (bin "latex-title-generator" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/latex_title_generator-b5d41b435588db08)
[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" "98ba21a47676a44000c20a1fa388f6cf636da0d671fe07d3d952aca5086420ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98ba21a47676a44000c20a1fa388f6cf636da0d671fe07d3d952aca5086420ba", kill_on_drop: false }`
[INFO] [stdout] 98ba21a47676a44000c20a1fa388f6cf636da0d671fe07d3d952aca5086420ba