[INFO] fetching crate wsdom-core 0.0.1...
[INFO] building wsdom-core-0.0.1 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate wsdom-core 0.0.1 into /workspace/builds/worker-2-tc2/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-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wsdom-core 0.0.1 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb61888011cdb3306ac6c062590685717827de22d9b5a9d1e4ad967fed802ab8
[INFO] running `Command { std: "docker" "start" "-a" "fb61888011cdb3306ac6c062590685717827de22d9b5a9d1e4ad967fed802ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb61888011cdb3306ac6c062590685717827de22d9b5a9d1e4ad967fed802ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb61888011cdb3306ac6c062590685717827de22d9b5a9d1e4ad967fed802ab8", kill_on_drop: false }`
[INFO] [stdout] fb61888011cdb3306ac6c062590685717827de22d9b5a9d1e4ad967fed802ab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d95d125550ad3cf0bf3a89661c7fb92373f69af6b965948db7b2f17c4e4d5528
[INFO] running `Command { std: "docker" "start" "-a" "d95d125550ad3cf0bf3a89661c7fb92373f69af6b965948db7b2f17c4e4d5528", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling ref-cast v1.0.25
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling ref-cast-impl v1.0.25
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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 7.61s
[INFO] running `Command { std: "docker" "inspect" "d95d125550ad3cf0bf3a89661c7fb92373f69af6b965948db7b2f17c4e4d5528", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d95d125550ad3cf0bf3a89661c7fb92373f69af6b965948db7b2f17c4e4d5528", kill_on_drop: false }`
[INFO] [stdout] d95d125550ad3cf0bf3a89661c7fb92373f69af6b965948db7b2f17c4e4d5528
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 779fe5b41cc380dff1788b86c3ca0869e81d1dcb3e57e783643d7bbf7402cb09
[INFO] running `Command { std: "docker" "start" "-a" "779fe5b41cc380dff1788b86c3ca0869e81d1dcb3e57e783643d7bbf7402cb09", kill_on_drop: false }`
[INFO] [stderr]    Compiling ref-cast-impl v1.0.25
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling ref-cast v1.0.25
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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 `CommandSerializeFailed` is never constructed
[INFO] [stdout]    --> src/operations.rs:309:8
[INFO] [stdout]     |
[INFO] [stdout] 309 | struct CommandSerializeFailed;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.33s
[INFO] running `Command { std: "docker" "inspect" "779fe5b41cc380dff1788b86c3ca0869e81d1dcb3e57e783643d7bbf7402cb09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "779fe5b41cc380dff1788b86c3ca0869e81d1dcb3e57e783643d7bbf7402cb09", kill_on_drop: false }`
[INFO] [stdout] 779fe5b41cc380dff1788b86c3ca0869e81d1dcb3e57e783643d7bbf7402cb09