[INFO] fetching crate web-component 0.1.5...
[INFO] checking web-component-0.1.5 against master#7dc9ff5c629753b6930ecfe9a0446538b8e25fb7 for pr-85387
[INFO] extracting crate web-component 0.1.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate web-component 0.1.5 on toolchain 7dc9ff5c629753b6930ecfe9a0446538b8e25fb7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ca8a1184be9c3ade3e50e36c6e567e967941bf3e22b7eb3bc971f02387e2085f
[INFO] running `Command { std: "docker" "start" "-a" "ca8a1184be9c3ade3e50e36c6e567e967941bf3e22b7eb3bc971f02387e2085f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca8a1184be9c3ade3e50e36c6e567e967941bf3e22b7eb3bc971f02387e2085f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca8a1184be9c3ade3e50e36c6e567e967941bf3e22b7eb3bc971f02387e2085f", kill_on_drop: false }`
[INFO] [stdout] ca8a1184be9c3ade3e50e36c6e567e967941bf3e22b7eb3bc971f02387e2085f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ca0abc069bacc5bdc662a6b74e0d7859f970813d366c7bcbc737aabc017f6d7c
[INFO] running `Command { std: "docker" "start" "-a" "ca0abc069bacc5bdc662a6b74e0d7859f970813d366c7bcbc737aabc017f6d7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen v0.2.74
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling erased-serde v0.3.15
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling web-component-derive v0.1.0
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking js-sys v0.3.51
[INFO] [stderr]     Checking serde_json v1.0.64
[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 10.95s
[INFO] running `Command { std: "docker" "inspect" "ca0abc069bacc5bdc662a6b74e0d7859f970813d366c7bcbc737aabc017f6d7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca0abc069bacc5bdc662a6b74e0d7859f970813d366c7bcbc737aabc017f6d7c", kill_on_drop: false }`
[INFO] [stdout] ca0abc069bacc5bdc662a6b74e0d7859f970813d366c7bcbc737aabc017f6d7c