[INFO] fetching crate mdbook-backlinks 0.2.5...
[INFO] testing mdbook-backlinks-0.2.5 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mdbook-backlinks 0.2.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mdbook-backlinks 0.2.5 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 mdbook-backlinks 0.2.5
[INFO] finished tweaking crates.io crate mdbook-backlinks 0.2.5
[INFO] tweaked toml for crates.io crate mdbook-backlinks 0.2.5 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate mdbook-backlinks 0.2.5 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 5b025704441bd35f9dbb772b6b65ceb1d04dc967dd8466a689f8840e97acbd74
[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" "5b025704441bd35f9dbb772b6b65ceb1d04dc967dd8466a689f8840e97acbd74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b025704441bd35f9dbb772b6b65ceb1d04dc967dd8466a689f8840e97acbd74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b025704441bd35f9dbb772b6b65ceb1d04dc967dd8466a689f8840e97acbd74", kill_on_drop: false }`
[INFO] [stdout] 5b025704441bd35f9dbb772b6b65ceb1d04dc967dd8466a689f8840e97acbd74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 3f5a832ebc94a4e71dbbe19d45e060f5785210ff5bd6c135da0782ce2c16b79d
[INFO] running `Command { std: "docker" "start" "-a" "3f5a832ebc94a4e71dbbe19d45e060f5785210ff5bd6c135da0782ce2c16b79d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling pathdiff v0.2.0
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling tungstenite v0.12.0
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]    Compiling open v1.7.1
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling xml5ever v0.16.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling lazy-regex-proc_macros v2.2.1
[INFO] [stderr]    Compiling handlebars v4.1.2
[INFO] [stderr]    Compiling lazy-regex v2.2.1
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling markup5ever_rcdom v0.1.0
[INFO] [stderr]    Compiling ammonia v3.1.2
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling elasticlunr-rs v2.3.13
[INFO] [stderr]    Compiling tokio-util v0.6.8
[INFO] [stderr]    Compiling tokio-stream v0.1.7
[INFO] [stderr]    Compiling tokio-tungstenite v0.13.0
[INFO] [stderr]    Compiling h2 v0.3.4
[INFO] [stderr]    Compiling hyper v0.14.12
[INFO] [stderr]    Compiling warp v0.3.1
[INFO] [stderr]    Compiling mdbook v0.4.12
[INFO] [stderr]    Compiling mdbook-backlinks v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 30s
[INFO] running `Command { std: "docker" "inspect" "3f5a832ebc94a4e71dbbe19d45e060f5785210ff5bd6c135da0782ce2c16b79d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f5a832ebc94a4e71dbbe19d45e060f5785210ff5bd6c135da0782ce2c16b79d", kill_on_drop: false }`
[INFO] [stdout] 3f5a832ebc94a4e71dbbe19d45e060f5785210ff5bd6c135da0782ce2c16b79d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 57a87c348bf267a536a17a53bb04b6368d7cd30a8481fa24d2c54b41130e96da
[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" "57a87c348bf267a536a17a53bb04b6368d7cd30a8481fa24d2c54b41130e96da", kill_on_drop: false }`
[INFO] [stderr]    Compiling mdbook-backlinks v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.76s
[INFO] running `Command { std: "docker" "inspect" "57a87c348bf267a536a17a53bb04b6368d7cd30a8481fa24d2c54b41130e96da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57a87c348bf267a536a17a53bb04b6368d7cd30a8481fa24d2c54b41130e96da", kill_on_drop: false }`
[INFO] [stdout] 57a87c348bf267a536a17a53bb04b6368d7cd30a8481fa24d2c54b41130e96da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 2877bb542e9924bf40dce717e99535cf455aa6646f066b1b0d0ff251859b4cc2
[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" "2877bb542e9924bf40dce717e99535cf455aa6646f066b1b0d0ff251859b4cc2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mdbook_backlinks-74bea4ebfc599477)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mdbook_backlinks-5783d1ec350dfb3b)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mdbook-backlinks
[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] [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" "2877bb542e9924bf40dce717e99535cf455aa6646f066b1b0d0ff251859b4cc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2877bb542e9924bf40dce717e99535cf455aa6646f066b1b0d0ff251859b4cc2", kill_on_drop: false }`
[INFO] [stdout] 2877bb542e9924bf40dce717e99535cf455aa6646f066b1b0d0ff251859b4cc2