[INFO] fetching crate web-component 0.1.5...
[INFO] checking web-component-0.1.5 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate web-component 0.1.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate web-component 0.1.5 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate web-component 0.1.5
[INFO] finished tweaking crates.io crate web-component 0.1.5
[INFO] tweaked toml for crates.io crate web-component 0.1.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2494f9ebbf79906e4c1d92d6015ce8a3580e108517e83e3d6b51058b1f144d34
[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" "2494f9ebbf79906e4c1d92d6015ce8a3580e108517e83e3d6b51058b1f144d34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2494f9ebbf79906e4c1d92d6015ce8a3580e108517e83e3d6b51058b1f144d34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2494f9ebbf79906e4c1d92d6015ce8a3580e108517e83e3d6b51058b1f144d34", kill_on_drop: false }`
[INFO] [stdout] 2494f9ebbf79906e4c1d92d6015ce8a3580e108517e83e3d6b51058b1f144d34
[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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c5cc54961c47ac168e1588e4ddbdc43f6bbdf9bf79b775b05ca14771b1d0ce0
[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" "0c5cc54961c47ac168e1588e4ddbdc43f6bbdf9bf79b775b05ca14771b1d0ce0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.74
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bumpalo v3.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling wasm-bindgen v0.2.74
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling erased-serde v0.3.15
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.74
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.74
[INFO] [stderr]    Compiling web-component-derive v0.1.0
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.74
[INFO] [stderr]     Checking js-sys v0.3.51
[INFO] [stderr]     Checking web-sys v0.3.51
[INFO] [stderr]     Checking web-component v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let json = &mut erased_serde::Serializer::erase(json);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `<dyn erased_serde::Serializer>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let json = &mut erased_serde::Serializer::erase(json);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `<dyn erased_serde::Serializer>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.39s
[INFO] running `Command { std: "docker" "inspect" "0c5cc54961c47ac168e1588e4ddbdc43f6bbdf9bf79b775b05ca14771b1d0ce0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c5cc54961c47ac168e1588e4ddbdc43f6bbdf9bf79b775b05ca14771b1d0ce0", kill_on_drop: false }`
[INFO] [stdout] 0c5cc54961c47ac168e1588e4ddbdc43f6bbdf9bf79b775b05ca14771b1d0ce0