[INFO] cloning repository https://github.com/pentla/arts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pentla/arts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpentla%2Farts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpentla%2Farts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 44976deec9a31b9ec20846a0d0d071bc86c31dd5
[INFO] checking pentla/arts against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpentla%2Farts" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pentla/arts on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pentla/arts
[INFO] finished tweaking git repo https://github.com/pentla/arts
[INFO] tweaked toml for git repo https://github.com/pentla/arts written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/pentla/arts already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b376c0c31b6d79f51c593e0c3e88fbf22383a489ec526ce2502d7bb12af65e8
[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" "8b376c0c31b6d79f51c593e0c3e88fbf22383a489ec526ce2502d7bb12af65e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b376c0c31b6d79f51c593e0c3e88fbf22383a489ec526ce2502d7bb12af65e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b376c0c31b6d79f51c593e0c3e88fbf22383a489ec526ce2502d7bb12af65e8", kill_on_drop: false }`
[INFO] [stdout] 8b376c0c31b6d79f51c593e0c3e88fbf22383a489ec526ce2502d7bb12af65e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d39b3e7ca08d30bc39d6fdb4b36f338b9a467fca8cb565595f40bc7350f52cd
[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" "9d39b3e7ca08d30bc39d6fdb4b36f338b9a467fca8cb565595f40bc7350f52cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[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 serde_json v1.0.57
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking xml5ever v0.16.1
[INFO] [stderr]     Checking markup5ever_rcdom v0.1.0
[INFO] [stderr]     Checking arts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/render/render.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |         NodeData::Text {ref contents} => {
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: try ignoring the field: `contents: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/render/render.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |         NodeData::Doctype { ref name, ref public_id, ref system_id } => {},
[INFO] [stdout]    |                             ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `public_id`
[INFO] [stdout]   --> src/render/render.rs:16:39
[INFO] [stdout]    |
[INFO] [stdout] 16 |         NodeData::Doctype { ref name, ref public_id, ref system_id } => {},
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^ help: try ignoring the field: `public_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `system_id`
[INFO] [stdout]   --> src/render/render.rs:16:54
[INFO] [stdout]    |
[INFO] [stdout] 16 |         NodeData::Doctype { ref name, ref public_id, ref system_id } => {},
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^ help: try ignoring the field: `system_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/render/render.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 17 |         NodeData::Comment { ref contents } => {},
[INFO] [stdout]    |                             ^^^^^^^^^^^^ help: try ignoring the field: `contents: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/render/render.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |         NodeData::ProcessingInstruction { ref target, ref contents} => {},
[INFO] [stdout]    |                                           ^^^^^^^^^^ help: try ignoring the field: `target: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/render/render.rs:18:55
[INFO] [stdout]    |
[INFO] [stdout] 18 |         NodeData::ProcessingInstruction { ref target, ref contents} => {},
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^ help: try ignoring the field: `contents: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/render/render.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 |         NodeData::Element { ref name, ref attrs, ref template_contents, ref mathml_annotation_xml_integration_point} => {}
[INFO] [stdout]    |                             ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]   --> src/render/render.rs:19:39
[INFO] [stdout]    |
[INFO] [stdout] 19 |         NodeData::Element { ref name, ref attrs, ref template_contents, ref mathml_annotation_xml_integration_point} => {}
[INFO] [stdout]    |                                       ^^^^^^^^^ help: try ignoring the field: `attrs: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `template_contents`
[INFO] [stdout]   --> src/render/render.rs:19:50
[INFO] [stdout]    |
[INFO] [stdout] 19 |         NodeData::Element { ref name, ref attrs, ref template_contents, ref mathml_annotation_xml_integration_point} => {}
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `template_contents: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mathml_annotation_xml_integration_point`
[INFO] [stdout]   --> src/render/render.rs:19:73
[INFO] [stdout]    |
[INFO] [stdout] 19 |         NodeData::Element { ref name, ref attrs, ref template_contents, ref mathml_annotation_xml_integration_point} => {}
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `mathml_annotation_xml_integration_point: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/render/render.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |         NodeData::Text {ref contents} => {
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: try ignoring the field: `contents: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/render/render.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |         NodeData::Doctype { ref name, ref public_id, ref system_id } => {},
[INFO] [stdout]    |                             ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `public_id`
[INFO] [stdout]   --> src/render/render.rs:16:39
[INFO] [stdout]    |
[INFO] [stdout] 16 |         NodeData::Doctype { ref name, ref public_id, ref system_id } => {},
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^ help: try ignoring the field: `public_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `system_id`
[INFO] [stdout]   --> src/render/render.rs:16:54
[INFO] [stdout]    |
[INFO] [stdout] 16 |         NodeData::Doctype { ref name, ref public_id, ref system_id } => {},
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^ help: try ignoring the field: `system_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/render/render.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 17 |         NodeData::Comment { ref contents } => {},
[INFO] [stdout]    |                             ^^^^^^^^^^^^ help: try ignoring the field: `contents: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/render/render.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |         NodeData::ProcessingInstruction { ref target, ref contents} => {},
[INFO] [stdout]    |                                           ^^^^^^^^^^ help: try ignoring the field: `target: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/render/render.rs:18:55
[INFO] [stdout]    |
[INFO] [stdout] 18 |         NodeData::ProcessingInstruction { ref target, ref contents} => {},
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^ help: try ignoring the field: `contents: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/render/render.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 |         NodeData::Element { ref name, ref attrs, ref template_contents, ref mathml_annotation_xml_integration_point} => {}
[INFO] [stdout]    |                             ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attrs`
[INFO] [stdout]   --> src/render/render.rs:19:39
[INFO] [stdout]    |
[INFO] [stdout] 19 |         NodeData::Element { ref name, ref attrs, ref template_contents, ref mathml_annotation_xml_integration_point} => {}
[INFO] [stdout]    |                                       ^^^^^^^^^ help: try ignoring the field: `attrs: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `template_contents`
[INFO] [stdout]   --> src/render/render.rs:19:50
[INFO] [stdout]    |
[INFO] [stdout] 19 |         NodeData::Element { ref name, ref attrs, ref template_contents, ref mathml_annotation_xml_integration_point} => {}
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `template_contents: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mathml_annotation_xml_integration_point`
[INFO] [stdout]   --> src/render/render.rs:19:73
[INFO] [stdout]    |
[INFO] [stdout] 19 |         NodeData::Element { ref name, ref attrs, ref template_contents, ref mathml_annotation_xml_integration_point} => {}
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `mathml_annotation_xml_integration_point: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.46s
[INFO] running `Command { std: "docker" "inspect" "9d39b3e7ca08d30bc39d6fdb4b36f338b9a467fca8cb565595f40bc7350f52cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d39b3e7ca08d30bc39d6fdb4b36f338b9a467fca8cb565595f40bc7350f52cd", kill_on_drop: false }`
[INFO] [stdout] 9d39b3e7ca08d30bc39d6fdb4b36f338b9a467fca8cb565595f40bc7350f52cd