[INFO] fetching crate enum-ref-macro 0.1.0...
[INFO] checking enum-ref-macro-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate enum-ref-macro 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate enum-ref-macro 0.1.0
[INFO] finished tweaking crates.io crate enum-ref-macro 0.1.0
[INFO] tweaked toml for crates.io crate enum-ref-macro 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate enum-ref-macro 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c82cb963067fe4cb11e49a60d6d3e1fb97257aeb468aff6181dd5e0305eafbb
[INFO] running `Command { std: "docker" "start" "-a" "7c82cb963067fe4cb11e49a60d6d3e1fb97257aeb468aff6181dd5e0305eafbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c82cb963067fe4cb11e49a60d6d3e1fb97257aeb468aff6181dd5e0305eafbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c82cb963067fe4cb11e49a60d6d3e1fb97257aeb468aff6181dd5e0305eafbb", kill_on_drop: false }`
[INFO] [stdout] 7c82cb963067fe4cb11e49a60d6d3e1fb97257aeb468aff6181dd5e0305eafbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ada40d7e22ee3f826e7d65b831fbb40fa9b3518fdf47ec0c1dcfd5c546dd76e
[INFO] running `Command { std: "docker" "start" "-a" "8ada40d7e22ee3f826e7d65b831fbb40fa9b3518fdf47ec0c1dcfd5c546dd76e", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking proc-macro2 v1.0.101
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v2.0.106
[INFO] [stderr]     Checking enum-ref-macro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `filter_repr` is never used
[INFO] [stdout]  --> src/utils.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait AttributeExt {
[INFO] [stdout]   |           ------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 7 |     fn filter_repr(&self) -> Option<&syn::Attribute>;
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `filter_repr` is never used
[INFO] [stdout]  --> src/utils.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait AttributeExt {
[INFO] [stdout]   |           ------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 7 |     fn filter_repr(&self) -> Option<&syn::Attribute>;
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `Command { std: "docker" "inspect" "8ada40d7e22ee3f826e7d65b831fbb40fa9b3518fdf47ec0c1dcfd5c546dd76e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ada40d7e22ee3f826e7d65b831fbb40fa9b3518fdf47ec0c1dcfd5c546dd76e", kill_on_drop: false }`
[INFO] [stdout] 8ada40d7e22ee3f826e7d65b831fbb40fa9b3518fdf47ec0c1dcfd5c546dd76e