[INFO] fetching crate serde-json-wasm 0.3.1...
[INFO] checking serde-json-wasm-0.3.1 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate serde-json-wasm 0.3.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate serde-json-wasm 0.3.1 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-json-wasm 0.3.1
[INFO] finished tweaking crates.io crate serde-json-wasm 0.3.1
[INFO] tweaked toml for crates.io crate serde-json-wasm 0.3.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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] 3452643878d97167608f3d22c076b88d22cde3e157dd066b2e71ef3bafbde722
[INFO] running `Command { std: "docker" "start" "-a" "3452643878d97167608f3d22c076b88d22cde3e157dd066b2e71ef3bafbde722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3452643878d97167608f3d22c076b88d22cde3e157dd066b2e71ef3bafbde722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3452643878d97167608f3d22c076b88d22cde3e157dd066b2e71ef3bafbde722", kill_on_drop: false }`
[INFO] [stdout] 3452643878d97167608f3d22c076b88d22cde3e157dd066b2e71ef3bafbde722
[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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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] da42ef5c7fe2d3207c5e507f502d7cdd3bd45be4b604b73d1a1073dc3fa7a672
[INFO] running `Command { std: "docker" "start" "-a" "da42ef5c7fe2d3207c5e507f502d7cdd3bd45be4b604b73d1a1073dc3fa7a672", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking serde-json-wasm v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/de/mod.rs:868:24
[INFO] [stdout]     |
[INFO] [stdout] 868 |         struct Empty {};
[INFO] [stdout]     |                        ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.57s
[INFO] running `Command { std: "docker" "inspect" "da42ef5c7fe2d3207c5e507f502d7cdd3bd45be4b604b73d1a1073dc3fa7a672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da42ef5c7fe2d3207c5e507f502d7cdd3bd45be4b604b73d1a1073dc3fa7a672", kill_on_drop: false }`
[INFO] [stdout] da42ef5c7fe2d3207c5e507f502d7cdd3bd45be4b604b73d1a1073dc3fa7a672