[INFO] cloning repository https://github.com/imbolc/rust-derive-macro-guide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imbolc/rust-derive-macro-guide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbolc%2Frust-derive-macro-guide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbolc%2Frust-derive-macro-guide'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb1564ad3b42f7e94ad21143ae3017f533c30a7a
[INFO] checking imbolc/rust-derive-macro-guide against try#15e8bc6907ab2b3623cb52acc726f4787458df64 for pr-141352
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbolc%2Frust-derive-macro-guide" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imbolc/rust-derive-macro-guide on toolchain 15e8bc6907ab2b3623cb52acc726f4787458df64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/imbolc/rust-derive-macro-guide
[INFO] finished tweaking git repo https://github.com/imbolc/rust-derive-macro-guide
[INFO] tweaked toml for git repo https://github.com/imbolc/rust-derive-macro-guide written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/imbolc/rust-derive-macro-guide 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" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a8c7f1c737d3e3d5dd2342c4dd119d3b497f4718c03f916a9f3414258d2163f
[INFO] running `Command { std: "docker" "start" "-a" "3a8c7f1c737d3e3d5dd2342c4dd119d3b497f4718c03f916a9f3414258d2163f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a8c7f1c737d3e3d5dd2342c4dd119d3b497f4718c03f916a9f3414258d2163f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a8c7f1c737d3e3d5dd2342c4dd119d3b497f4718c03f916a9f3414258d2163f", kill_on_drop: false }`
[INFO] [stdout] 3a8c7f1c737d3e3d5dd2342c4dd119d3b497f4718c03f916a9f3414258d2163f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+15e8bc6907ab2b3623cb52acc726f4787458df64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 469cfc56374ed98d3f0c7d5a4b5bd90ae6cf0bbc50525415607ee6e6f45c127d
[INFO] running `Command { std: "docker" "start" "-a" "469cfc56374ed98d3f0c7d5a4b5bd90ae6cf0bbc50525415607ee6e6f45c127d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling darling_core v0.13.0
[INFO] [stderr]    Compiling darling_macro v0.13.0
[INFO] [stderr]    Compiling darling v0.13.0
[INFO] [stderr]    Compiling mytrait-derive v0.1.0 (/opt/rustwide/workdir/mytrait-derive)
[INFO] [stderr]     Checking derive-mytrait v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `MyTrait` is never used
[INFO] [stdout]  --> src/lib.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait MyTrait {
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]   --> src/lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Foo;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bar` is never constructed
[INFO] [stdout]   --> src/lib.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Bar;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.99s
[INFO] running `Command { std: "docker" "inspect" "469cfc56374ed98d3f0c7d5a4b5bd90ae6cf0bbc50525415607ee6e6f45c127d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "469cfc56374ed98d3f0c7d5a4b5bd90ae6cf0bbc50525415607ee6e6f45c127d", kill_on_drop: false }`
[INFO] [stdout] 469cfc56374ed98d3f0c7d5a4b5bd90ae6cf0bbc50525415607ee6e6f45c127d