[INFO] fetching crate essence_macros 0.2.1...
[INFO] checking essence_macros-0.2.1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate essence_macros 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate essence_macros 0.2.1 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate essence_macros 0.2.1
[INFO] finished tweaking crates.io crate essence_macros 0.2.1
[INFO] tweaked toml for crates.io crate essence_macros 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fc21abc6f8414b2ba4e4e277ffca1cb1da84edb41812d161f3e3b1eea7afd3b
[INFO] running `Command { std: "docker" "start" "-a" "2fc21abc6f8414b2ba4e4e277ffca1cb1da84edb41812d161f3e3b1eea7afd3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fc21abc6f8414b2ba4e4e277ffca1cb1da84edb41812d161f3e3b1eea7afd3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fc21abc6f8414b2ba4e4e277ffca1cb1da84edb41812d161f3e3b1eea7afd3b", kill_on_drop: false }`
[INFO] [stdout] 2fc21abc6f8414b2ba4e4e277ffca1cb1da84edb41812d161f3e3b1eea7afd3b
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0742e2934ad9b1072e3b681d8afb5c2a18c6af98061a6b595264dc9262081159
[INFO] running `Command { std: "docker" "start" "-a" "0742e2934ad9b1072e3b681d8afb5c2a18c6af98061a6b595264dc9262081159", kill_on_drop: false }`
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking strsim v0.11.1
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking darling_core v0.20.10
[INFO] [stderr]    Compiling darling_macro v0.20.10
[INFO] [stderr]     Checking darling v0.20.10
[INFO] [stderr]     Checking essence_macros v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let mut pk = opts.pk;
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let mut pk = opts.pk;
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `is_in` is never read
[INFO] [stdout]   --> src/models.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct FieldOpts {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub is_in: bool,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldOpts` 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: field `is_in` is never read
[INFO] [stdout]   --> src/models.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct FieldOpts {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub is_in: bool,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldOpts` 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: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:235:59
[INFO] [stdout]     |
[INFO] [stdout] 235 |         let pk_field = self.iter().find(|x| x.pk).unwrap().clone();
[INFO] [stdout]     |                                                           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `FieldOpts` does not implement `Clone`, so calling `clone` on `&FieldOpts` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 235 -         let pk_field = self.iter().find(|x| x.pk).unwrap().clone();
[INFO] [stdout] 235 +         let pk_field = self.iter().find(|x| x.pk).unwrap();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `FieldOpts`, implement `Clone` for it
[INFO] [stdout]    --> src/models.rs:59:1
[INFO] [stdout]     |
[INFO] [stdout] 59  + #[derive(Clone)]
[INFO] [stdout] 60  | pub struct FieldOpts {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:351:61
[INFO] [stdout]     |
[INFO] [stdout] 351 |     let pk_field = field_opts.iter().find(|x| x.pk).unwrap().clone();
[INFO] [stdout]     |                                                             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `FieldOpts` does not implement `Clone`, so calling `clone` on `&FieldOpts` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 351 -     let pk_field = field_opts.iter().find(|x| x.pk).unwrap().clone();
[INFO] [stdout] 351 +     let pk_field = field_opts.iter().find(|x| x.pk).unwrap();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `FieldOpts`, implement `Clone` for it
[INFO] [stdout]    --> src/models.rs:59:1
[INFO] [stdout]     |
[INFO] [stdout] 59  + #[derive(Clone)]
[INFO] [stdout] 60  | pub struct FieldOpts {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:235:59
[INFO] [stdout]     |
[INFO] [stdout] 235 |         let pk_field = self.iter().find(|x| x.pk).unwrap().clone();
[INFO] [stdout]     |                                                           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `FieldOpts` does not implement `Clone`, so calling `clone` on `&FieldOpts` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 235 -         let pk_field = self.iter().find(|x| x.pk).unwrap().clone();
[INFO] [stdout] 235 +         let pk_field = self.iter().find(|x| x.pk).unwrap();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `FieldOpts`, implement `Clone` for it
[INFO] [stdout]    --> src/models.rs:59:1
[INFO] [stdout]     |
[INFO] [stdout] 59  + #[derive(Clone)]
[INFO] [stdout] 60  | pub struct FieldOpts {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:351:61
[INFO] [stdout]     |
[INFO] [stdout] 351 |     let pk_field = field_opts.iter().find(|x| x.pk).unwrap().clone();
[INFO] [stdout]     |                                                             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `FieldOpts` does not implement `Clone`, so calling `clone` on `&FieldOpts` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 351 -     let pk_field = field_opts.iter().find(|x| x.pk).unwrap().clone();
[INFO] [stdout] 351 +     let pk_field = field_opts.iter().find(|x| x.pk).unwrap();
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `FieldOpts`, implement `Clone` for it
[INFO] [stdout]    --> src/models.rs:59:1
[INFO] [stdout]     |
[INFO] [stdout] 59  + #[derive(Clone)]
[INFO] [stdout] 60  | pub struct FieldOpts {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.90s
[INFO] running `Command { std: "docker" "inspect" "0742e2934ad9b1072e3b681d8afb5c2a18c6af98061a6b595264dc9262081159", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0742e2934ad9b1072e3b681d8afb5c2a18c6af98061a6b595264dc9262081159", kill_on_drop: false }`
[INFO] [stdout] 0742e2934ad9b1072e3b681d8afb5c2a18c6af98061a6b595264dc9262081159