[INFO] fetching crate sauron-md 0.1.4...
[INFO] testing sauron-md-0.1.4 against 1.49.0 for beta-1.50-1
[INFO] extracting crate sauron-md 0.1.4 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate sauron-md 0.1.4 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sauron-md 0.1.4
[INFO] finished tweaking crates.io crate sauron-md 0.1.4
[INFO] tweaked toml for crates.io crate sauron-md 0.1.4 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd3b16cdd079c754472fa3de8adaf393f29eeb214fca8b34cdf3f57230ee0f21
[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" "dd3b16cdd079c754472fa3de8adaf393f29eeb214fca8b34cdf3f57230ee0f21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd3b16cdd079c754472fa3de8adaf393f29eeb214fca8b34cdf3f57230ee0f21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd3b16cdd079c754472fa3de8adaf393f29eeb214fca8b34cdf3f57230ee0f21", kill_on_drop: false }`
[INFO] [stdout] dd3b16cdd079c754472fa3de8adaf393f29eeb214fca8b34cdf3f57230ee0f21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20329eb2c883d8c3bcab7e7156199b00dffa56c9f442f0ce7cb7337068d0bbc5
[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" "20329eb2c883d8c3bcab7e7156199b00dffa56c9f442f0ce7cb7337068d0bbc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]    Compiling mt-dom v0.2.2
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling mt-dom v0.6.2
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tendril v0.4.1
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.69
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.69
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.69
[INFO] [stderr]    Compiling wasm-bindgen v0.2.69
[INFO] [stderr]    Compiling thiserror v1.0.23
[INFO] [stderr]    Compiling js-sys v0.3.46
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]    Compiling web-sys v0.3.46
[INFO] [stderr]    Compiling xml5ever v0.16.1
[INFO] [stderr]    Compiling markup5ever_rcdom v0.1.0
[INFO] [stderr]    Compiling sauron-core v0.32.6
[INFO] [stderr]    Compiling sauron v0.28.2
[INFO] [stderr]    Compiling sauron-parse v0.1.8
[INFO] [stderr]    Compiling sauron-md v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/markdown.rs:56:36
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         add_child!(node);
[INFO] [stdout]    |                                    ^^^^ expected enum `sauron::mt_dom::Node`, found enum `mt_dom::node::Node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `sauron::mt_dom::Node<&str, &str, &str, AttributeValue, sauron::web_sys::Event, _>`
[INFO] [stdout]               found enum `mt_dom::node::Node<&str, &str, &str, sauron_core::html::attributes::attribute_value::AttributeValue, sauron_core::dom::events::Event, _>`
[INFO] [stdout]    = note: perhaps two different versions of crate `mt_dom` are being used?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sauron-md`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "20329eb2c883d8c3bcab7e7156199b00dffa56c9f442f0ce7cb7337068d0bbc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20329eb2c883d8c3bcab7e7156199b00dffa56c9f442f0ce7cb7337068d0bbc5", kill_on_drop: false }`
[INFO] [stdout] 20329eb2c883d8c3bcab7e7156199b00dffa56c9f442f0ce7cb7337068d0bbc5