[INFO] cloning repository https://github.com/claymcleod/introspect
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/claymcleod/introspect" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaymcleod%2Fintrospect", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaymcleod%2Fintrospect'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31fe496dc1ec26b4bfd4aaf8ea039c703af41ae1
[INFO] checking claymcleod/introspect against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaymcleod%2Fintrospect" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/claymcleod/introspect on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/claymcleod/introspect
[INFO] finished tweaking git repo https://github.com/claymcleod/introspect
[INFO] tweaked toml for git repo https://github.com/claymcleod/introspect written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/claymcleod/introspect already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc4535d418dda964e72068132dd3e97354240028147c2c5dad95ccbb57cf4f04
[INFO] running `Command { std: "docker" "start" "-a" "cc4535d418dda964e72068132dd3e97354240028147c2c5dad95ccbb57cf4f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc4535d418dda964e72068132dd3e97354240028147c2c5dad95ccbb57cf4f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc4535d418dda964e72068132dd3e97354240028147c2c5dad95ccbb57cf4f04", kill_on_drop: false }`
[INFO] [stdout] cc4535d418dda964e72068132dd3e97354240028147c2c5dad95ccbb57cf4f04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10b21f3103e112430d9ec12ae8d62acafde8d3ead0cac69f78d683a2645f3bc3
[INFO] running `Command { std: "docker" "start" "-a" "10b21f3103e112430d9ec12ae8d62acafde8d3ead0cac69f78d683a2645f3bc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking quote v1.0.33
[INFO] [stderr]     Checking syn v2.0.38
[INFO] [stderr]     Checking introspect-core v0.1.1 (/opt/rustwide/workdir/introspect-core)
[INFO] [stderr]     Checking introspect-proc-macros v0.1.0 (/opt/rustwide/workdir/introspect-proc-macros)
[INFO] [stderr]     Checking introspect v0.1.1 (/opt/rustwide/workdir/introspect)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> introspect/examples/introspect_struct.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct ExampleTwo(usize);
[INFO] [stdout]    |        ---------- ^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.99s
[INFO] running `Command { std: "docker" "inspect" "10b21f3103e112430d9ec12ae8d62acafde8d3ead0cac69f78d683a2645f3bc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10b21f3103e112430d9ec12ae8d62acafde8d3ead0cac69f78d683a2645f3bc3", kill_on_drop: false }`
[INFO] [stdout] 10b21f3103e112430d9ec12ae8d62acafde8d3ead0cac69f78d683a2645f3bc3