[INFO] fetching crate sauron-syntax 0.1.4...
[INFO] checking sauron-syntax-0.1.4 against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] extracting crate sauron-syntax 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate sauron-syntax 0.1.4 on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sauron-syntax 0.1.4
[INFO] finished tweaking crates.io crate sauron-syntax 0.1.4
[INFO] tweaked toml for crates.io crate sauron-syntax 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sauron v0.28.2
[INFO] [stderr]   Downloaded mt-dom v0.6.2
[INFO] [stderr]   Downloaded mt-dom v0.2.2
[INFO] [stderr]   Downloaded sauron-core v0.32.6
[INFO] [stderr]   Downloaded sauron-parse v0.1.8
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3db4475306116e6f0b3c0a72a105de3be31dd3b926f41e9ecc08e64683f24a97
[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" "3db4475306116e6f0b3c0a72a105de3be31dd3b926f41e9ecc08e64683f24a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3db4475306116e6f0b3c0a72a105de3be31dd3b926f41e9ecc08e64683f24a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3db4475306116e6f0b3c0a72a105de3be31dd3b926f41e9ecc08e64683f24a97", kill_on_drop: false }`
[INFO] [stdout] 3db4475306116e6f0b3c0a72a105de3be31dd3b926f41e9ecc08e64683f24a97
[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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbfa96779f59ce5942ac275daea948e3fa1aa8ed42563021e574793294ef35bd
[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" "dbfa96779f59ce5942ac275daea948e3fa1aa8ed42563021e574793294ef35bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking mt-dom v0.2.2
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]     Checking mt-dom v0.6.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]     Checking string_cache v0.8.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.74
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.74
[INFO] [stderr]     Checking xml5ever v0.16.1
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.74
[INFO] [stderr]     Checking wasm-bindgen v0.2.74
[INFO] [stderr]     Checking js-sys v0.3.51
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking markup5ever_rcdom v0.1.0
[INFO] [stderr]     Checking web-sys v0.3.51
[INFO] [stderr]     Checking sauron-core v0.32.6
[INFO] [stderr]     Checking sauron v0.28.2
[INFO] [stderr]     Checking sauron-parse v0.1.8
[INFO] [stderr]     Checking sauron-syntax v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `to_syntax` found for enum `mt_dom::node::Node<&str, &str, &str, sauron_core::html::attributes::attribute_value::AttributeValue, sauron_core::dom::events::Event, ()>` in the current scope
[INFO] [stdout]   --> src/lib.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 root_node.to_syntax(&mut buffer, use_macro, 0)?;
[INFO] [stdout]    |                           ^^^^^^^^^ method not found in `mt_dom::node::Node<&str, &str, &str, sauron_core::html::attributes::attribute_value::AttributeValue, sauron_core::dom::events::Event, ()>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout] note: `ToSyntax` defines an item `to_syntax`, perhaps you need to implement it
[INFO] [stdout]   --> src/to_syntax.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub trait ToSyntax {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `to_syntax` found for enum `mt_dom::node::Node<&str, &str, &str, sauron_core::html::attributes::attribute_value::AttributeValue, sauron_core::dom::events::Event, ()>` in the current scope
[INFO] [stdout]   --> src/lib.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 root_node.to_syntax(&mut buffer, use_macro, 0)?;
[INFO] [stdout]    |                           ^^^^^^^^^ method not found in `mt_dom::node::Node<&str, &str, &str, sauron_core::html::attributes::attribute_value::AttributeValue, sauron_core::dom::events::Event, ()>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout] note: `ToSyntax` defines an item `to_syntax`, perhaps you need to implement it
[INFO] [stdout]   --> src/to_syntax.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub trait ToSyntax {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[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 E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sauron-syntax`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "dbfa96779f59ce5942ac275daea948e3fa1aa8ed42563021e574793294ef35bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbfa96779f59ce5942ac275daea948e3fa1aa8ed42563021e574793294ef35bd", kill_on_drop: false }`
[INFO] [stdout] dbfa96779f59ce5942ac275daea948e3fa1aa8ed42563021e574793294ef35bd