[INFO] fetching crate derive-io-plugin 0.1.0...
[INFO] checking derive-io-plugin-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate derive-io-plugin 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate derive-io-plugin 0.1.0
[INFO] finished tweaking crates.io crate derive-io-plugin 0.1.0
[INFO] tweaked toml for crates.io crate derive-io-plugin 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate derive-io-plugin 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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] [stderr]       Adding syn v1.0.109 (available: v2.0.104)
[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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 5e18293a3a15c6a754ab6597d4c620432398cfddbfffe124294e67e125ba7e7f
[INFO] running `Command { std: "docker" "start" "-a" "5e18293a3a15c6a754ab6597d4c620432398cfddbfffe124294e67e125ba7e7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e18293a3a15c6a754ab6597d4c620432398cfddbfffe124294e67e125ba7e7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e18293a3a15c6a754ab6597d4c620432398cfddbfffe124294e67e125ba7e7f", kill_on_drop: false }`
[INFO] [stdout] 5e18293a3a15c6a754ab6597d4c620432398cfddbfffe124294e67e125ba7e7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d0cc8c33487a9b61bad099a6ed60c1a973ac05fb2319cee41b1b51db4d7511aa
[INFO] running `Command { std: "docker" "start" "-a" "d0cc8c33487a9b61bad099a6ed60c1a973ac05fb2319cee41b1b51db4d7511aa", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking proc-macro2 v1.0.95
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]     Checking derive-io-plugin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ToTokens` and `quote_spanned`
[INFO] [stdout]  --> src/variants.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use quote::{quote_spanned, ToTokens};
[INFO] [stdout]   |             ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FieldsUnnamed`, `Fields`, `Variant`, `parse_quote_spanned`, `punctuated::Punctuated`, `spanned::Spanned`, and `token::Comma`
[INFO] [stdout]  --> src/variants.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     parse_quote_spanned, punctuated::Punctuated, spanned::Spanned, token::Comma, Fields,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 4 |     FieldsUnnamed, Variant,
[INFO] [stdout]   |     ^^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message_name`
[INFO] [stdout]   --> src/lib.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let message_name = format_ident!("{name}Message");
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `response_name`
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let response_name = format_ident!("{name}Response");
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_response_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/lib.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let data = match &input.data {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ToTokens` and `quote_spanned`
[INFO] [stdout]  --> src/variants.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use quote::{quote_spanned, ToTokens};
[INFO] [stdout]   |             ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FieldsUnnamed`, `Fields`, `Variant`, `parse_quote_spanned`, `punctuated::Punctuated`, `spanned::Spanned`, and `token::Comma`
[INFO] [stdout]  --> src/variants.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     parse_quote_spanned, punctuated::Punctuated, spanned::Spanned, token::Comma, Fields,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 4 |     FieldsUnnamed, Variant,
[INFO] [stdout]   |     ^^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message_name`
[INFO] [stdout]   --> src/lib.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let message_name = format_ident!("{name}Message");
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `response_name`
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let response_name = format_ident!("{name}Response");
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_response_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/lib.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let data = match &input.data {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.33s
[INFO] running `Command { std: "docker" "inspect" "d0cc8c33487a9b61bad099a6ed60c1a973ac05fb2319cee41b1b51db4d7511aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0cc8c33487a9b61bad099a6ed60c1a973ac05fb2319cee41b1b51db4d7511aa", kill_on_drop: false }`
[INFO] [stdout] d0cc8c33487a9b61bad099a6ed60c1a973ac05fb2319cee41b1b51db4d7511aa