[INFO] fetching crate macro-class-render 0.0.1...
[INFO] checking macro-class-render-0.0.1 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate macro-class-render 0.0.1 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate macro-class-render 0.0.1 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate macro-class-render 0.0.1
[INFO] finished tweaking crates.io crate macro-class-render 0.0.1
[INFO] tweaked toml for crates.io crate macro-class-render 0.0.1 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87b2a5e53dc8ef7eb1af9c73d6701beb05dfddcb544fd27d2ac991f7bc6af4d9
[INFO] running `Command { std: "docker" "start" "-a" "87b2a5e53dc8ef7eb1af9c73d6701beb05dfddcb544fd27d2ac991f7bc6af4d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87b2a5e53dc8ef7eb1af9c73d6701beb05dfddcb544fd27d2ac991f7bc6af4d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87b2a5e53dc8ef7eb1af9c73d6701beb05dfddcb544fd27d2ac991f7bc6af4d9", kill_on_drop: false }`
[INFO] [stdout] 87b2a5e53dc8ef7eb1af9c73d6701beb05dfddcb544fd27d2ac991f7bc6af4d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6989c85b7088e3eb09c8138d733130fc147f51100a12a15d7e74db484bb5bbd
[INFO] running `Command { std: "docker" "start" "-a" "b6989c85b7088e3eb09c8138d733130fc147f51100a12a15d7e74db484bb5bbd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking unicode-xid v0.0.4
[INFO] [stderr]     Checking quote v0.3.15
[INFO] [stderr]     Checking synom v0.11.3
[INFO] [stderr]     Checking syn v0.11.11
[INFO] [stderr]     Checking macro-class-render v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:108:49
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let generated = fields.iter().map(|x| { (worker(x, &classname)) }).collect::<Vec<_>>();
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:108:49
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let generated = fields.iter().map(|x| { (worker(x, &classname)) }).collect::<Vec<_>>();
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.24s
[INFO] running `Command { std: "docker" "inspect" "b6989c85b7088e3eb09c8138d733130fc147f51100a12a15d7e74db484bb5bbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6989c85b7088e3eb09c8138d733130fc147f51100a12a15d7e74db484bb5bbd", kill_on_drop: false }`
[INFO] [stdout] b6989c85b7088e3eb09c8138d733130fc147f51100a12a15d7e74db484bb5bbd