[INFO] fetching crate web-component 0.1.5...
[INFO] checking web-component-0.1.5 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate web-component 0.1.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate web-component 0.1.5 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded paste-impl v0.1.18
[INFO] [stderr]   Downloaded paste v0.1.18
[INFO] [stderr]   Downloaded web-component-derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65426af755d122e2b1932d627d8840a9661c25142db4b1b2e3a7c0ee4c88435b
[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" "65426af755d122e2b1932d627d8840a9661c25142db4b1b2e3a7c0ee4c88435b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65426af755d122e2b1932d627d8840a9661c25142db4b1b2e3a7c0ee4c88435b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65426af755d122e2b1932d627d8840a9661c25142db4b1b2e3a7c0ee4c88435b", kill_on_drop: false }`
[INFO] [stdout] 65426af755d122e2b1932d627d8840a9661c25142db4b1b2e3a7c0ee4c88435b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08c968591318a2564d96e62a14530838b9186ff86d92bb4c1e168bb48797719e
[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" "08c968591318a2564d96e62a14530838b9186ff86d92bb4c1e168bb48797719e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling web-component-derive v0.1.0
[INFO] [stderr]     Checking web-sys v0.3.50
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking erased-serde v0.3.13
[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] 
[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] 
[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 25.28s
[INFO] running `Command { std: "docker" "inspect" "08c968591318a2564d96e62a14530838b9186ff86d92bb4c1e168bb48797719e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08c968591318a2564d96e62a14530838b9186ff86d92bb4c1e168bb48797719e", kill_on_drop: false }`
[INFO] [stdout] 08c968591318a2564d96e62a14530838b9186ff86d92bb4c1e168bb48797719e