[INFO] fetching crate html5ever_dom_sink 0.2.0...
[INFO] testing html5ever_dom_sink-0.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate html5ever_dom_sink 0.2.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate html5ever_dom_sink 0.2.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate html5ever_dom_sink 0.2.0
[INFO] removed path dependency html5ever from crates.io crate html5ever_dom_sink 0.2.0
[INFO] removed path dependency html5ever_test_util from crates.io crate html5ever_dom_sink 0.2.0
[INFO] finished tweaking crates.io crate html5ever_dom_sink 0.2.0
[INFO] tweaked toml for crates.io crate html5ever_dom_sink 0.2.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--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 string_cache v0.2.29
[INFO] [stderr]   Downloaded html5ever_test_util v0.1.0
[INFO] [stderr]   Downloaded lazy_static v0.1.16
[INFO] [stderr]   Downloaded tendril v0.1.6
[INFO] [stderr]   Downloaded rc v0.1.1
[INFO] [stderr]   Downloaded mac v0.0.2
[INFO] [stderr]   Downloaded debug_unreachable v0.0.6
[INFO] [stderr]   Downloaded string_cache_shared v0.1.12
[INFO] [stderr]   Downloaded string_cache_plugin v0.1.10
[INFO] [stderr]   Downloaded html5ever v0.2.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73f4b0d3440526f054001d849e480a4d7ec2e19e73ed3187f6d7f752b1437a74
[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" "73f4b0d3440526f054001d849e480a4d7ec2e19e73ed3187f6d7f752b1437a74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73f4b0d3440526f054001d849e480a4d7ec2e19e73ed3187f6d7f752b1437a74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73f4b0d3440526f054001d849e480a4d7ec2e19e73ed3187f6d7f752b1437a74", kill_on_drop: false }`
[INFO] [stdout] 73f4b0d3440526f054001d849e480a4d7ec2e19e73ed3187f6d7f752b1437a74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01568b4a0e529e6a4e7581e824fe29ee8e71cb224ffa6f06c78ae19f063cad68
[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" "01568b4a0e529e6a4e7581e824fe29ee8e71cb224ffa6f06c78ae19f063cad68", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling rc v0.1.1
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling tendril v0.1.6
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling string_cache v0.2.29
[INFO] [stderr]    Compiling html5ever v0.2.11
[INFO] [stderr]    Compiling debug_unreachable v0.1.1
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling time v0.2.23
[INFO] [stderr]    Compiling html5ever_dom_sink v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `string_cache::QualName`
[INFO] [stdout]   --> src/common.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use string_cache::QualName;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ no `QualName` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `string_cache::QualName`
[INFO] [stdout]   --> src/rcdom.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use string_cache::QualName;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ no `QualName` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `string_cache::QualName`
[INFO] [stdout]   --> src/owned_dom.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use string_cache::QualName;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ no `QualName` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(box_syntax, append, rc_weak)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/rcdom.rs:285:21
[INFO] [stdout]     |
[INFO] [stdout] 285 |                     try!(serializer.start_elem(name.clone(),
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/rcdom.rs:290:21
[INFO] [stdout]     |
[INFO] [stdout] 290 |                     try!(handle.clone().serialize(serializer, IncludeNode));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/rcdom.rs:294:21
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     try!(serializer.end_elem(name.clone()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/rcdom.rs:301:21
[INFO] [stdout]     |
[INFO] [stdout] 301 |                     try!(handle.clone().serialize(serializer, IncludeNode));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/owned_dom.rs:360:21
[INFO] [stdout]     |
[INFO] [stdout] 360 |                     try!(serializer.start_elem(name.clone(),
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/owned_dom.rs:365:21
[INFO] [stdout]     |
[INFO] [stdout] 365 |                     try!(child.serialize(serializer, IncludeNode));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/owned_dom.rs:369:21
[INFO] [stdout]     |
[INFO] [stdout] 369 |                     try!(serializer.end_elem(name.clone()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/owned_dom.rs:376:21
[INFO] [stdout]     |
[INFO] [stdout] 376 |                     try!(child.serialize(serializer, IncludeNode));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0046]: not all trait items implemented, missing: `get_template_contents`
[INFO] [stdout]    --> src/rcdom.rs:132:1
[INFO] [stdout]     |
[INFO] [stdout] 132 | impl TreeSink for RcDom {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^ missing `get_template_contents` in implementation
[INFO] [stdout]     |
[INFO] [stdout]     = help: implement the missing item: `fn get_template_contents(&self, _: <Self as TreeSink>::Handle) -> <Self as TreeSink>::Handle { todo!() }`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0046]: not all trait items implemented, missing: `get_template_contents`
[INFO] [stdout]    --> src/owned_dom.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | impl TreeSink for Sink {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^ missing `get_template_contents` in implementation
[INFO] [stdout]     |
[INFO] [stdout]     = help: implement the missing item: `fn get_template_contents(&self, _: <Self as TreeSink>::Handle) -> <Self as TreeSink>::Handle { todo!() }`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `downgrade` found for reference `&rcdom::Handle` in the current scope
[INFO] [stdout]   --> src/rcdom.rs:84:31
[INFO] [stdout]    |
[INFO] [stdout] 84 |     *parent = Some(new_parent.downgrade());
[INFO] [stdout]    |                    -----------^^^^^^^^^
[INFO] [stdout]    |                    |          |
[INFO] [stdout]    |                    |          this is an associated function, not a method
[INFO] [stdout]    |                    help: use associated function syntax instead: `Rc::<T>::downgrade`
[INFO] [stdout]    |
[INFO] [stdout]    = note: found the following associated functions; to be used as methods, functions must have a `self` parameter
[INFO] [stdout]    = note: the candidate is defined in an impl for the type `Rc<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `downgrade` found for struct `rcdom::Handle` in the current scope
[INFO] [stdout]    --> src/rcdom.rs:213:57
[INFO] [stdout]     |
[INFO] [stdout] 60  | pub struct Handle(Rc<RefCell<Node>>);
[INFO] [stdout]     | ------------------------------------- method `downgrade` not found for this
[INFO] [stdout] ...
[INFO] [stdout] 213 |         child.borrow_mut().parent = Some(parent.clone().downgrade());
[INFO] [stdout]     |                                          ---------------^^^^^^^^^
[INFO] [stdout]     |                                          |              |
[INFO] [stdout]     |                                          |              this is an associated function, not a method
[INFO] [stdout]     |                                          help: use associated function syntax instead: `Rc::<T>::downgrade`
[INFO] [stdout]     |
[INFO] [stdout]     = note: found the following associated functions; to be used as methods, functions must have a `self` parameter
[INFO] [stdout]     = note: the candidate is defined in an impl for the type `Rc<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `downgrade` found for struct `rcdom::Handle` in the current scope
[INFO] [stdout]    --> src/rcdom.rs:250:39
[INFO] [stdout]     |
[INFO] [stdout] 60  | pub struct Handle(Rc<RefCell<Node>>);
[INFO] [stdout]     | ------------------------------------- method `downgrade` not found for this
[INFO] [stdout] ...
[INFO] [stdout] 250 |             *parent = Some(new_parent.downgrade());
[INFO] [stdout]     |                            -----------^^^^^^^^^
[INFO] [stdout]     |                            |          |
[INFO] [stdout]     |                            |          this is an associated function, not a method
[INFO] [stdout]     |                            help: use associated function syntax instead: `Rc::<T>::downgrade`
[INFO] [stdout]     |
[INFO] [stdout]     = note: found the following associated functions; to be used as methods, functions must have a `self` parameter
[INFO] [stdout]     = note: the candidate is defined in an impl for the type `Rc<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0046, E0432, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0046`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `html5ever_dom_sink`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "01568b4a0e529e6a4e7581e824fe29ee8e71cb224ffa6f06c78ae19f063cad68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01568b4a0e529e6a4e7581e824fe29ee8e71cb224ffa6f06c78ae19f063cad68", kill_on_drop: false }`
[INFO] [stdout] 01568b4a0e529e6a4e7581e824fe29ee8e71cb224ffa6f06c78ae19f063cad68