[INFO] crate rubber_duck_macro 0.2.0 is already in cache
[INFO] testing rubber_duck_macro-0.2.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate rubber_duck_macro 0.2.0 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate rubber_duck_macro 0.2.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rubber_duck_macro 0.2.0
[INFO] finished tweaking crates.io crate rubber_duck_macro 0.2.0
[INFO] tweaked toml for crates.io crate rubber_duck_macro 0.2.0 written to work/builds/worker-2/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] dc11e92c92da5a4b9f4018bed279fbae19e648c933792b6553992edce0845762
[INFO] running `"docker" "start" "-a" "dc11e92c92da5a4b9f4018bed279fbae19e648c933792b6553992edce0845762"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling proc-macro-hack v0.5.10
[INFO] [stderr]    Compiling rubber_duck_macro v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `quote_spanned`
[INFO] [stderr]  --> src/call.rs:1:20
[INFO] [stderr]   |
[INFO] [stderr] 1 | use quote::{quote, quote_spanned};
[INFO] [stderr]   |                    ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `syn::spanned::Spanned`
[INFO] [stderr]  --> src/call.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use syn::spanned::Spanned;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ExprMethodCall`, `Type`
[INFO] [stderr]  --> src/call.rs:4:50
[INFO] [stderr]   |
[INFO] [stderr] 4 | use syn::{parse_macro_input, Expr, Ident, Token, Type, ExprMethodCall};
[INFO] [stderr]   |                                                  ^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `bracketed`, `parenthesized`
[INFO] [stderr]  --> src/call.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | use syn::{braced, bracketed, parenthesized, parse_quote};
[INFO] [stderr]   |                   ^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `syn::ExprCall`
[INFO] [stderr]   --> src/call.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use syn::ExprCall;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `syn::export::ToTokens`
[INFO] [stderr]  --> src/builder.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use syn::export::ToTokens;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Expr`, `Field`, `Fields`, `Item`, `Lit`, `MetaNameValue`, `Meta`
[INFO] [stderr]  --> src/builder.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Expr, Field, Fields, GenericArgument, Ident, Item, Lit, Meta, MetaNameValue,
[INFO] [stderr]   |     ^^^^  ^^^^^  ^^^^^^                          ^^^^  ^^^  ^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stderr]   --> src/builder.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use crate::parse_fn::FieldRole;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stderr]  --> src/build.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::parse_fn::FieldRole;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `quote::quote`
[INFO] [stderr]  --> src/parse_fn.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use quote::quote;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/call.rs:78:57
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     brace.surround(&mut braced_tokens, |v|{});
[INFO] [stderr]    |                                                         ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/build.rs:28:72
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let p_expr_expanders = structure.positional().enumerate().map(|(i, p)| {
[INFO] [stderr]    |                                                                        ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ExpressionList`
[INFO] [stderr]   --> src/call.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | struct ExpressionList {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_builder`
[INFO] [stderr]  --> src/build.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn gen_builder(structure: &parse_fn::Structure) -> ::proc_macro2::TokenStream {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.32s
[INFO] running `"docker" "inspect" "dc11e92c92da5a4b9f4018bed279fbae19e648c933792b6553992edce0845762"`
[INFO] running `"docker" "rm" "-f" "dc11e92c92da5a4b9f4018bed279fbae19e648c933792b6553992edce0845762"`
[INFO] [stdout] dc11e92c92da5a4b9f4018bed279fbae19e648c933792b6553992edce0845762
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 18f9f3678346f6e69b5e9296b9de3baa2080c0718935913c4f51a56954c6f9a0
[INFO] running `"docker" "start" "-a" "18f9f3678346f6e69b5e9296b9de3baa2080c0718935913c4f51a56954c6f9a0"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rubber_duck_macro v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `quote_spanned`
[INFO] [stderr]  --> src/call.rs:1:20
[INFO] [stderr]   |
[INFO] [stderr] 1 | use quote::{quote, quote_spanned};
[INFO] [stderr]   |                    ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `syn::spanned::Spanned`
[INFO] [stderr]  --> src/call.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use syn::spanned::Spanned;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ExprMethodCall`, `Type`
[INFO] [stderr]  --> src/call.rs:4:50
[INFO] [stderr]   |
[INFO] [stderr] 4 | use syn::{parse_macro_input, Expr, Ident, Token, Type, ExprMethodCall};
[INFO] [stderr]   |                                                  ^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `bracketed`, `parenthesized`
[INFO] [stderr]  --> src/call.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | use syn::{braced, bracketed, parenthesized, parse_quote};
[INFO] [stderr]   |                   ^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `syn::ExprCall`
[INFO] [stderr]   --> src/call.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use syn::ExprCall;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `syn::export::ToTokens`
[INFO] [stderr]  --> src/builder.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use syn::export::ToTokens;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Expr`, `Field`, `Fields`, `Item`, `Lit`, `MetaNameValue`, `Meta`
[INFO] [stderr]  --> src/builder.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Expr, Field, Fields, GenericArgument, Ident, Item, Lit, Meta, MetaNameValue,
[INFO] [stderr]   |     ^^^^  ^^^^^  ^^^^^^                          ^^^^  ^^^  ^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stderr]   --> src/builder.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use crate::parse_fn::FieldRole;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stderr]  --> src/build.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::parse_fn::FieldRole;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `quote::quote`
[INFO] [stderr]  --> src/parse_fn.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use quote::quote;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/call.rs:78:57
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     brace.surround(&mut braced_tokens, |v|{});
[INFO] [stderr]    |                                                         ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/build.rs:28:72
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let p_expr_expanders = structure.positional().enumerate().map(|(i, p)| {
[INFO] [stderr]    |                                                                        ^ help: consider prefixing with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ExpressionList`
[INFO] [stderr]   --> src/call.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | struct ExpressionList {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_builder`
[INFO] [stderr]  --> src/build.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn gen_builder(structure: &parse_fn::Structure) -> ::proc_macro2::TokenStream {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `"docker" "inspect" "18f9f3678346f6e69b5e9296b9de3baa2080c0718935913c4f51a56954c6f9a0"`
[INFO] running `"docker" "rm" "-f" "18f9f3678346f6e69b5e9296b9de3baa2080c0718935913c4f51a56954c6f9a0"`
[INFO] [stdout] 18f9f3678346f6e69b5e9296b9de3baa2080c0718935913c4f51a56954c6f9a0
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 957d37ccb3da9bd4899e3ec1137181fdd7c07a1d92ecba0929bae9c054cc9563
[INFO] running `"docker" "start" "-a" "957d37ccb3da9bd4899e3ec1137181fdd7c07a1d92ecba0929bae9c054cc9563"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rubber_duck_macro-172e5475c55b7580
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rubber_duck_macro
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "957d37ccb3da9bd4899e3ec1137181fdd7c07a1d92ecba0929bae9c054cc9563"`
[INFO] running `"docker" "rm" "-f" "957d37ccb3da9bd4899e3ec1137181fdd7c07a1d92ecba0929bae9c054cc9563"`
[INFO] [stdout] 957d37ccb3da9bd4899e3ec1137181fdd7c07a1d92ecba0929bae9c054cc9563