[INFO] crate jam_derive 0.0.1 is already in cache
[INFO] checking jam_derive-0.0.1 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate jam_derive 0.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate jam_derive 0.0.1 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate jam_derive 0.0.1
[INFO] finished tweaking crates.io crate jam_derive 0.0.1
[INFO] tweaked toml for crates.io crate jam_derive 0.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 062e03bcf0181f9a7c13adc4dc8f95cacecc887433d648494c3a8617bc71a9c6
[INFO] running `"docker" "start" "-a" "062e03bcf0181f9a7c13adc4dc8f95cacecc887433d648494c3a8617bc71a9c6"`
[INFO] [stderr]     Checking jam_derive v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `Item`, `parse_items`
[INFO] [stderr]   --> src/lib.rs:46:11
[INFO] [stderr]    |
[INFO] [stderr] 46 | use syn::{Item, parse_items};
[INFO] [stderr]    |           ^^^^  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TokenTree`
[INFO] [stderr]   --> src/lib.rs:47:18
[INFO] [stderr]    |
[INFO] [stderr] 47 | use syn::{Field, TokenTree, Variant, Ident, ItemKind, VariantData, Ty, Pat, Mutability, BindingMode};
[INFO] [stderr]    |                  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Item`, `parse_items`
[INFO] [stderr]   --> src/lib.rs:46:11
[INFO] [stderr]    |
[INFO] [stderr] 46 | use syn::{Item, parse_items};
[INFO] [stderr]    |           ^^^^  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TokenTree`
[INFO] [stderr]   --> src/lib.rs:47:18
[INFO] [stderr]    |
[INFO] [stderr] 47 | use syn::{Field, TokenTree, Variant, Ident, ItemKind, VariantData, Ty, Pat, Mutability, BindingMode};
[INFO] [stderr]    |                  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]    --> src/lib.rs:236:13
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let node = elms.node;
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attrs`
[INFO] [stderr]    --> src/lib.rs:291:69
[INFO] [stderr]     |
[INFO] [stderr] 291 |         if let Some(syn::ConstExpr::Other(syn::Expr { ref node, ref attrs })) = first_variant.discriminant {
[INFO] [stderr]     |                                                                 ----^^^^^
[INFO] [stderr]     |                                                                 |
[INFO] [stderr]     |                                                                 help: try ignoring the field: `attrs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attrs`
[INFO] [stderr]    --> src/lib.rs:293:48
[INFO] [stderr]     |
[INFO] [stderr] 293 |                 let &syn::Expr { ref node, ref attrs} = expr.as_ref();
[INFO] [stderr]     |                                            ----^^^^^
[INFO] [stderr]     |                                            |
[INFO] [stderr]     |                                            help: try ignoring the field: `attrs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attrs`
[INFO] [stderr]    --> src/lib.rs:296:52
[INFO] [stderr]     |
[INFO] [stderr] 296 |                     let &syn::Expr { ref node, ref attrs} = exprs.first().unwrap();
[INFO] [stderr]     |                                                ----^^^^^
[INFO] [stderr]     |                                                |
[INFO] [stderr]     |                                                help: try ignoring the field: `attrs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]    --> src/lib.rs:298:63
[INFO] [stderr]     |
[INFO] [stderr] 298 |                     if let &syn::ExprKind::Mac(syn::Mac { ref path, ref tts }) = node {
[INFO] [stderr]     |                                                           ----^^^^
[INFO] [stderr]     |                                                           |
[INFO] [stderr]     |                                                           help: try ignoring the field: `path: _`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `IdentNotFound`
[INFO] [stderr]   --> src/lib.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     IdentNotFound,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]    --> src/lib.rs:326:4
[INFO] [stderr]     |
[INFO] [stderr] 326 | fn main() {
[INFO] [stderr]     |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | #![feature(proc_macro, proc_macro_lib)]
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `proc_macro_lib` has been stable since 1.15.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:34:24
[INFO] [stderr]    |
[INFO] [stderr] 34 | #![feature(proc_macro, proc_macro_lib)]
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the `segments:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:102:59
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 if let Ty::Path(_, syn::Path { global: _, segments: ref segments}) = field.ty {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref segments`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the `ident:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:103:53
[INFO] [stderr]     |
[INFO] [stderr] 103 |                     if let Some(&syn::PathSegment { ident: ref ident, parameters: _ }) = segments.last() {
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref ident`
[INFO] [stderr] 
[INFO] [stderr] warning: the `segments:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:122:44
[INFO] [stderr]     |
[INFO] [stderr] 122 |         if let Some(syn::Path { global: _, segments: segments }) = path {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `segments`
[INFO] [stderr] 
[INFO] [stderr] warning: the `ident:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:123:45
[INFO] [stderr]     |
[INFO] [stderr] 123 |             if let Some(&syn::PathSegment { ident: ref ident, parameters: _ }) = segments.last() {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref ident`
[INFO] [stderr] 
[INFO] [stderr] warning: the `segments:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:130:51
[INFO] [stderr]     |
[INFO] [stderr] 130 |         if let Ty::Path(_, syn::Path { global: _, segments: segments}) = *ty {
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `segments`
[INFO] [stderr] 
[INFO] [stderr] warning: the `ident:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:131:45
[INFO] [stderr]     |
[INFO] [stderr] 131 |             if let Some(&syn::PathSegment { ident: ref ident, parameters: _ }) = segments.last() {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref ident`
[INFO] [stderr] 
[INFO] [stderr] warning: the `segments:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:167:67
[INFO] [stderr]     |
[INFO] [stderr] 167 |                         if let Ty::Path(_, syn::Path { global: _, segments: segments}) = ty.clone() {
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `segments`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]    --> src/lib.rs:236:13
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let node = elms.node;
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attrs`
[INFO] [stderr]    --> src/lib.rs:291:69
[INFO] [stderr]     |
[INFO] [stderr] 291 |         if let Some(syn::ConstExpr::Other(syn::Expr { ref node, ref attrs })) = first_variant.discriminant {
[INFO] [stderr]     |                                                                 ----^^^^^
[INFO] [stderr]     |                                                                 |
[INFO] [stderr]     |                                                                 help: try ignoring the field: `attrs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attrs`
[INFO] [stderr]    --> src/lib.rs:293:48
[INFO] [stderr]     |
[INFO] [stderr] 293 |                 let &syn::Expr { ref node, ref attrs} = expr.as_ref();
[INFO] [stderr]     |                                            ----^^^^^
[INFO] [stderr]     |                                            |
[INFO] [stderr]     |                                            help: try ignoring the field: `attrs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attrs`
[INFO] [stderr]    --> src/lib.rs:296:52
[INFO] [stderr]     |
[INFO] [stderr] 296 |                     let &syn::Expr { ref node, ref attrs} = exprs.first().unwrap();
[INFO] [stderr]     |                                                ----^^^^^
[INFO] [stderr]     |                                                |
[INFO] [stderr]     |                                                help: try ignoring the field: `attrs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]    --> src/lib.rs:298:63
[INFO] [stderr]     |
[INFO] [stderr] 298 |                     if let &syn::ExprKind::Mac(syn::Mac { ref path, ref tts }) = node {
[INFO] [stderr]     |                                                           ----^^^^
[INFO] [stderr]     |                                                           |
[INFO] [stderr]     |                                                           help: try ignoring the field: `path: _`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `IdentNotFound`
[INFO] [stderr]   --> src/lib.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     IdentNotFound,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | #![feature(proc_macro, proc_macro_lib)]
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `proc_macro_lib` has been stable since 1.15.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:34:24
[INFO] [stderr]    |
[INFO] [stderr] 34 | #![feature(proc_macro, proc_macro_lib)]
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the `segments:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:102:59
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 if let Ty::Path(_, syn::Path { global: _, segments: ref segments}) = field.ty {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref segments`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the `ident:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:103:53
[INFO] [stderr]     |
[INFO] [stderr] 103 |                     if let Some(&syn::PathSegment { ident: ref ident, parameters: _ }) = segments.last() {
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref ident`
[INFO] [stderr] 
[INFO] [stderr] warning: the `segments:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:122:44
[INFO] [stderr]     |
[INFO] [stderr] 122 |         if let Some(syn::Path { global: _, segments: segments }) = path {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `segments`
[INFO] [stderr] 
[INFO] [stderr] warning: the `ident:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:123:45
[INFO] [stderr]     |
[INFO] [stderr] 123 |             if let Some(&syn::PathSegment { ident: ref ident, parameters: _ }) = segments.last() {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref ident`
[INFO] [stderr] 
[INFO] [stderr] warning: the `segments:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:130:51
[INFO] [stderr]     |
[INFO] [stderr] 130 |         if let Ty::Path(_, syn::Path { global: _, segments: segments}) = *ty {
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `segments`
[INFO] [stderr] 
[INFO] [stderr] warning: the `ident:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:131:45
[INFO] [stderr]     |
[INFO] [stderr] 131 |             if let Some(&syn::PathSegment { ident: ref ident, parameters: _ }) = segments.last() {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `ref ident`
[INFO] [stderr] 
[INFO] [stderr] warning: the `segments:` in this pattern is redundant
[INFO] [stderr]    --> src/lib.rs:167:67
[INFO] [stderr]     |
[INFO] [stderr] 167 |                         if let Ty::Path(_, syn::Path { global: _, segments: segments}) = ty.clone() {
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^^^^^^^^ help: use shorthand field pattern: `segments`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "062e03bcf0181f9a7c13adc4dc8f95cacecc887433d648494c3a8617bc71a9c6"`
[INFO] running `"docker" "rm" "-f" "062e03bcf0181f9a7c13adc4dc8f95cacecc887433d648494c3a8617bc71a9c6"`
[INFO] [stdout] 062e03bcf0181f9a7c13adc4dc8f95cacecc887433d648494c3a8617bc71a9c6
