[INFO] fetching crate usual-proc 0.1.0...
[INFO] checking usual-proc-0.1.0 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate usual-proc 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate usual-proc 0.1.0 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate usual-proc 0.1.0
[INFO] finished tweaking crates.io crate usual-proc 0.1.0
[INFO] tweaked toml for crates.io crate usual-proc 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5fead50b45fe91b2958d7a974bc47c4aa4dc40a8f66e363a63aa5a829fb118e
[INFO] running `Command { std: "docker" "start" "-a" "c5fead50b45fe91b2958d7a974bc47c4aa4dc40a8f66e363a63aa5a829fb118e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5fead50b45fe91b2958d7a974bc47c4aa4dc40a8f66e363a63aa5a829fb118e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5fead50b45fe91b2958d7a974bc47c4aa4dc40a8f66e363a63aa5a829fb118e", kill_on_drop: false }`
[INFO] [stdout] c5fead50b45fe91b2958d7a974bc47c4aa4dc40a8f66e363a63aa5a829fb118e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ace2e1ac85cb8b0548531501665837a8ac2d1854f5475c3c967d4848b460ac08
[INFO] running `Command { std: "docker" "start" "-a" "ace2e1ac85cb8b0548531501665837a8ac2d1854f5475c3c967d4848b460ac08", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking usual-proc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 | /                 &field_names.into_iter().for_each(|f| {
[INFO] [stdout] 55 | |                     let model_ident = Ident::new(model_name, Span2::call_site());
[INFO] [stdout] 56 | |                     let column_literal = Literal::string(f);
[INFO] [stdout] 57 | |
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | |                     }
[INFO] [stdout] 67 | |                 });
[INFO] [stdout]    | |__________________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 let _ = &field_names.into_iter().for_each(|f| {
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 | /                 &field_names.into_iter().for_each(|f| {
[INFO] [stdout] 55 | |                     let model_ident = Ident::new(model_name, Span2::call_site());
[INFO] [stdout] 56 | |                     let column_literal = Literal::string(f);
[INFO] [stdout] 57 | |
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | |                     }
[INFO] [stdout] 67 | |                 });
[INFO] [stdout]    | |__________________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 let _ = &field_names.into_iter().for_each(|f| {
[INFO] [stdout]    |                 +++++++
[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 5.41s
[INFO] running `Command { std: "docker" "inspect" "ace2e1ac85cb8b0548531501665837a8ac2d1854f5475c3c967d4848b460ac08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ace2e1ac85cb8b0548531501665837a8ac2d1854f5475c3c967d4848b460ac08", kill_on_drop: false }`
[INFO] [stdout] ace2e1ac85cb8b0548531501665837a8ac2d1854f5475c3c967d4848b460ac08