[INFO] fetching crate arg_enum_proc_macro 0.3.2...
[INFO] checking arg_enum_proc_macro-0.3.2 against master#9610dfe5a9a731ced1ea4923ecbd0c57fe367898 for beta-170-4
[INFO] extracting crate arg_enum_proc_macro 0.3.2 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate arg_enum_proc_macro 0.3.2 on toolchain 9610dfe5a9a731ced1ea4923ecbd0c57fe367898
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arg_enum_proc_macro 0.3.2
[INFO] finished tweaking crates.io crate arg_enum_proc_macro 0.3.2
[INFO] tweaked toml for crates.io crate arg_enum_proc_macro 0.3.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc96f6ac8577b10da1759d6d3a5be539c63e913a6e0f2aa219cf26c2a3b1588d
[INFO] running `Command { std: "docker" "start" "-a" "bc96f6ac8577b10da1759d6d3a5be539c63e913a6e0f2aa219cf26c2a3b1588d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc96f6ac8577b10da1759d6d3a5be539c63e913a6e0f2aa219cf26c2a3b1588d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc96f6ac8577b10da1759d6d3a5be539c63e913a6e0f2aa219cf26c2a3b1588d", kill_on_drop: false }`
[INFO] [stdout] bc96f6ac8577b10da1759d6d3a5be539c63e913a6e0f2aa219cf26c2a3b1588d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e8648b3425498d444e24c075e3fcd871d21485f307f497b93a417257bb621ca
[INFO] running `Command { std: "docker" "start" "-a" "6e8648b3425498d444e24c075e3fcd871d21485f307f497b93a417257bb621ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]     Checking unicode-ident v1.0.9
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]    Compiling trybuild v1.0.80
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking arg_enum_proc_macro v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]   --> src/lib.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct ArgEnumAttrs {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 66 |     paren_token: syn::token::Paren,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArgEnumAttrs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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]    Compiling serde_derive v1.0.163
[INFO] [stderr]     Checking basic-toml v0.1.2
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]   --> src/lib.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct ArgEnumAttrs {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 66 |     paren_token: syn::token::Paren,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArgEnumAttrs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]   --> src/lib.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct ArgEnumAttrs {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 66 |     paren_token: syn::token::Paren,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArgEnumAttrs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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 [unoptimized + debuginfo] target(s) in 5.06s
[INFO] running `Command { std: "docker" "inspect" "6e8648b3425498d444e24c075e3fcd871d21485f307f497b93a417257bb621ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e8648b3425498d444e24c075e3fcd871d21485f307f497b93a417257bb621ca", kill_on_drop: false }`
[INFO] [stdout] 6e8648b3425498d444e24c075e3fcd871d21485f307f497b93a417257bb621ca
