[INFO] fetching crate wsdom-core 0.0.1...
[INFO] checking wsdom-core-0.0.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate wsdom-core 0.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate wsdom-core 0.0.1
[INFO] finished tweaking crates.io crate wsdom-core 0.0.1
[INFO] tweaked toml for crates.io crate wsdom-core 0.0.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wsdom-core 0.0.1 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6e87e5554e23882acfa68ffd2d758b49ab0afba0240d81b2cd7aeacc924f303
[INFO] running `Command { std: "docker" "start" "-a" "e6e87e5554e23882acfa68ffd2d758b49ab0afba0240d81b2cd7aeacc924f303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6e87e5554e23882acfa68ffd2d758b49ab0afba0240d81b2cd7aeacc924f303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6e87e5554e23882acfa68ffd2d758b49ab0afba0240d81b2cd7aeacc924f303", kill_on_drop: false }`
[INFO] [stdout] e6e87e5554e23882acfa68ffd2d758b49ab0afba0240d81b2cd7aeacc924f303
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 845b1597eb5df23ce4fbc5f6782552639b21a5a4cdd621aa0fa684905368894b
[INFO] running `Command { std: "docker" "start" "-a" "845b1597eb5df23ce4fbc5f6782552639b21a5a4cdd621aa0fa684905368894b", kill_on_drop: false }`
[INFO] [stderr]    Compiling ref-cast v1.0.24
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling ref-cast-impl v1.0.24
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking wsdom-core v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `InvalidReturn` is never constructed
[INFO] [stdout]    --> src/link.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 | struct InvalidReturn;
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CommandSerializeFailed` is never constructed
[INFO] [stdout]    --> src/operations.rs:309:8
[INFO] [stdout]     |
[INFO] [stdout] 309 | struct CommandSerializeFailed;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InvalidReturn` is never constructed
[INFO] [stdout]    --> src/link.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 | struct InvalidReturn;
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CommandSerializeFailed` is never constructed
[INFO] [stdout]    --> src/operations.rs:309:8
[INFO] [stdout]     |
[INFO] [stdout] 309 | struct CommandSerializeFailed;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.60s
[INFO] running `Command { std: "docker" "inspect" "845b1597eb5df23ce4fbc5f6782552639b21a5a4cdd621aa0fa684905368894b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "845b1597eb5df23ce4fbc5f6782552639b21a5a4cdd621aa0fa684905368894b", kill_on_drop: false }`
[INFO] [stdout] 845b1597eb5df23ce4fbc5f6782552639b21a5a4cdd621aa0fa684905368894b