[INFO] fetching crate interoptopus_proc 0.15.0-alpha.6...
[INFO] checking interoptopus_proc-0.15.0-alpha.6 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate interoptopus_proc 0.15.0-alpha.6 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate interoptopus_proc 0.15.0-alpha.6
[INFO] finished tweaking crates.io crate interoptopus_proc 0.15.0-alpha.6
[INFO] tweaked toml for crates.io crate interoptopus_proc 0.15.0-alpha.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate interoptopus_proc 0.15.0-alpha.6 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate interoptopus_proc 0.15.0-alpha.6 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebbd2d5fc4b6f8c3dc75fa23fb7ce016285e8374c2fc875f9000bb968c3e79f7
[INFO] running `Command { std: "docker" "start" "-a" "ebbd2d5fc4b6f8c3dc75fa23fb7ce016285e8374c2fc875f9000bb968c3e79f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebbd2d5fc4b6f8c3dc75fa23fb7ce016285e8374c2fc875f9000bb968c3e79f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebbd2d5fc4b6f8c3dc75fa23fb7ce016285e8374c2fc875f9000bb968c3e79f7", kill_on_drop: false }`
[INFO] [stdout] ebbd2d5fc4b6f8c3dc75fa23fb7ce016285e8374c2fc875f9000bb968c3e79f7
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c86362e3d6b98ef1429fc47322f988c7ab36209a03f71c72e76ea5654d115b1d
[INFO] running `Command { std: "docker" "start" "-a" "c86362e3d6b98ef1429fc47322f988c7ab36209a03f71c72e76ea5654d115b1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling prettyplease v0.2.32
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v2.0.100
[INFO] [stderr]     Checking darling_core v0.20.11
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]     Checking darling v0.20.11
[INFO] [stderr]     Checking interoptopus_proc v0.15.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Attributes` is never constructed
[INFO] [stdout]  --> src/constants.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Attributes {}
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Attributes` is never constructed
[INFO] [stdout]  --> src/constants.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Attributes {}
[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 9.71s
[INFO] running `Command { std: "docker" "inspect" "c86362e3d6b98ef1429fc47322f988c7ab36209a03f71c72e76ea5654d115b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c86362e3d6b98ef1429fc47322f988c7ab36209a03f71c72e76ea5654d115b1d", kill_on_drop: false }`
[INFO] [stdout] c86362e3d6b98ef1429fc47322f988c7ab36209a03f71c72e76ea5654d115b1d