[INFO] fetching crate html5ever_ext 0.21.20...
[INFO] checking html5ever_ext-0.21.20 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate html5ever_ext 0.21.20 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate html5ever_ext 0.21.20 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate html5ever_ext 0.21.20
[INFO] finished tweaking crates.io crate html5ever_ext 0.21.20
[INFO] tweaked toml for crates.io crate html5ever_ext 0.21.20 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e0eeaa6e89b9839f82ca0bac0f5050cf5f6e56faaac196ae79033d040194078
[INFO] running `Command { std: "docker" "start" "-a" "6e0eeaa6e89b9839f82ca0bac0f5050cf5f6e56faaac196ae79033d040194078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e0eeaa6e89b9839f82ca0bac0f5050cf5f6e56faaac196ae79033d040194078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e0eeaa6e89b9839f82ca0bac0f5050cf5f6e56faaac196ae79033d040194078", kill_on_drop: false }`
[INFO] [stdout] 6e0eeaa6e89b9839f82ca0bac0f5050cf5f6e56faaac196ae79033d040194078
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f77885abad14e0cdfd3816f66e3e7144ac3698bc58955e4bf83d514d9e9e033
[INFO] running `Command { std: "docker" "start" "-a" "9f77885abad14e0cdfd3816f66e3e7144ac3698bc58955e4bf83d514d9e9e033", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling procedural-masquerade v0.1.7
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ordermap v0.2.13
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking dtoa-short v0.3.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking debug_unreachable v0.1.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling css v0.0.22
[INFO] [stderr]    Compiling string_cache v0.6.2
[INFO] [stderr]    Compiling markup5ever v0.6.2
[INFO] [stderr]    Compiling cssparser v0.21.3
[INFO] [stderr]    Compiling html5ever v0.21.0
[INFO] [stderr]    Compiling phf_macros v0.7.24
[INFO] [stderr]    Compiling cssparser-macros v0.3.6
[INFO] [stdout] error[E0506]: cannot assign to `self.input.cached_token` because it is borrowed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cssparser-0.21.3/src/parser.rs:450:17
[INFO] [stdout]     |
[INFO] [stdout] 426 |     pub fn next_including_whitespace_and_comments(&mut self) -> Result<&Token<'i>, BasicParseError<'i>> {
[INFO] [stdout]     |                                                   - let's call the lifetime of this reference `'1`
[INFO] [stdout] ...
[INFO] [stdout] 439 |             Some(ref cached_token)
[INFO] [stdout]     |                  ---------------- borrow of `self.input.cached_token` occurs here
[INFO] [stdout] ...
[INFO] [stdout] 450 |                 self.input.cached_token = Some(CachedToken {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.input.cached_token` occurs here
[INFO] [stdout] ...
[INFO] [stdout] 462 |         Ok(token)
[INFO] [stdout]     |         --------- returning this value requires that `self.input.cached_token.0` is borrowed for `'1`
[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 E0506`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cssparser`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "9f77885abad14e0cdfd3816f66e3e7144ac3698bc58955e4bf83d514d9e9e033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f77885abad14e0cdfd3816f66e3e7144ac3698bc58955e4bf83d514d9e9e033", kill_on_drop: false }`
[INFO] [stdout] 9f77885abad14e0cdfd3816f66e3e7144ac3698bc58955e4bf83d514d9e9e033