[INFO] fetching crate cast_trait_object 0.1.4...
[INFO] checking cast_trait_object-0.1.4 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate cast_trait_object 0.1.4 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate cast_trait_object 0.1.4
[INFO] finished tweaking crates.io crate cast_trait_object 0.1.4
[INFO] tweaked toml for crates.io crate cast_trait_object 0.1.4 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cast_trait_object 0.1.4 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a4886ca3fae1fdbc3267cba4f7ad589e6b9fdca2498bdd397bed0bc244b6f70
[INFO] running `Command { std: "docker" "start" "-a" "3a4886ca3fae1fdbc3267cba4f7ad589e6b9fdca2498bdd397bed0bc244b6f70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a4886ca3fae1fdbc3267cba4f7ad589e6b9fdca2498bdd397bed0bc244b6f70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a4886ca3fae1fdbc3267cba4f7ad589e6b9fdca2498bdd397bed0bc244b6f70", kill_on_drop: false }`
[INFO] [stdout] 3a4886ca3fae1fdbc3267cba4f7ad589e6b9fdca2498bdd397bed0bc244b6f70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 781443ead075a50886ed0fb9a79f6028a57761bd98dc85c2f57811dc514990d3
[INFO] running `Command { std: "docker" "start" "-a" "781443ead075a50886ed0fb9a79f6028a57761bd98dc85c2f57811dc514990d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling cast_trait_object_macros v0.1.4
[INFO] [stderr]     Checking cast_trait_object v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `TestGenericMixed` is never constructed
[INFO] [stdout]     --> src/lib.rs:1729:12
[INFO] [stdout]      |
[INFO] [stdout] 1729 |     struct TestGenericMixed<T>(T);
[INFO] [stdout]      |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestSuper` is never constructed
[INFO] [stdout]     --> src/lib.rs:1778:16
[INFO] [stdout]      |
[INFO] [stdout] 1778 |         struct TestSuper;
[INFO] [stdout]      |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestSub` is never constructed
[INFO] [stdout]     --> src/lib.rs:1782:16
[INFO] [stdout]      |
[INFO] [stdout] 1782 |         struct TestSub;
[INFO] [stdout]      |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.75s
[INFO] running `Command { std: "docker" "inspect" "781443ead075a50886ed0fb9a79f6028a57761bd98dc85c2f57811dc514990d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "781443ead075a50886ed0fb9a79f6028a57761bd98dc85c2f57811dc514990d3", kill_on_drop: false }`
[INFO] [stdout] 781443ead075a50886ed0fb9a79f6028a57761bd98dc85c2f57811dc514990d3