[INFO] fetching crate yarner-toc 0.1.1...
[INFO] testing yarner-toc-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate yarner-toc 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate yarner-toc 0.1.1 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 crates.io crate yarner-toc 0.1.1
[INFO] finished tweaking crates.io crate yarner-toc 0.1.1
[INFO] tweaked toml for crates.io crate yarner-toc 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate yarner-toc 0.1.1 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] e23fd66e4879cdb65063bb7ceba9befc3621f2521c7c17e7ca5eaf0d0dabddb2
[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" "e23fd66e4879cdb65063bb7ceba9befc3621f2521c7c17e7ca5eaf0d0dabddb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e23fd66e4879cdb65063bb7ceba9befc3621f2521c7c17e7ca5eaf0d0dabddb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e23fd66e4879cdb65063bb7ceba9befc3621f2521c7c17e7ca5eaf0d0dabddb2", kill_on_drop: false }`
[INFO] [stdout] e23fd66e4879cdb65063bb7ceba9befc3621f2521c7c17e7ca5eaf0d0dabddb2
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5b432ff4e5d3410c0cabbd16e7cdbc9acf090b2bacde6be6de97d6e752f7de09
[INFO] running `Command { std: "docker" "start" "-a" "5b432ff4e5d3410c0cabbd16e7cdbc9acf090b2bacde6be6de97d6e752f7de09", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling yarner-lib v0.5.2
[INFO] [stderr]    Compiling yarner-toc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.47s
[INFO] running `Command { std: "docker" "inspect" "5b432ff4e5d3410c0cabbd16e7cdbc9acf090b2bacde6be6de97d6e752f7de09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b432ff4e5d3410c0cabbd16e7cdbc9acf090b2bacde6be6de97d6e752f7de09", kill_on_drop: false }`
[INFO] [stdout] 5b432ff4e5d3410c0cabbd16e7cdbc9acf090b2bacde6be6de97d6e752f7de09
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9d38c9c21dc3afdb5cf9a3611ac6094338076ce80b4fda49bd31063887e7bf52
[INFO] running `Command { std: "docker" "start" "-a" "9d38c9c21dc3afdb5cf9a3611ac6094338076ce80b4fda49bd31063887e7bf52", kill_on_drop: false }`
[INFO] [stderr]    Compiling yarner-toc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "9d38c9c21dc3afdb5cf9a3611ac6094338076ce80b4fda49bd31063887e7bf52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d38c9c21dc3afdb5cf9a3611ac6094338076ce80b4fda49bd31063887e7bf52", kill_on_drop: false }`
[INFO] [stdout] 9d38c9c21dc3afdb5cf9a3611ac6094338076ce80b4fda49bd31063887e7bf52
[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] [stdout] 656b7e28a51aac743586ce8d7d9418b04fddf2d8442312ae7d5c609b4b0a9ebf
[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" "656b7e28a51aac743586ce8d7d9418b04fddf2d8442312ae7d5c609b4b0a9ebf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/yarner_toc-513a67c1b18fc5e5)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::generate_toc ... ok
[INFO] [stdout] test tests::heading_level_with_space ... ok
[INFO] [stdout] test tests::replace_marker ... ok
[INFO] [stdout] test tests::format_anchor ... ok
[INFO] [stdout] test tests::heading_level_without_space ... ok
[INFO] [stdout] test tests::no_heading ... ok
[INFO] [stdout] test tests::no_label_heading ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "656b7e28a51aac743586ce8d7d9418b04fddf2d8442312ae7d5c609b4b0a9ebf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "656b7e28a51aac743586ce8d7d9418b04fddf2d8442312ae7d5c609b4b0a9ebf", kill_on_drop: false }`
[INFO] [stdout] 656b7e28a51aac743586ce8d7d9418b04fddf2d8442312ae7d5c609b4b0a9ebf