[INFO] cloning repository https://github.com/samsieber/rubber-duck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samsieber/rubber-duck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamsieber%2Frubber-duck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamsieber%2Frubber-duck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7286a3f8dbe7783cd77fe53fbc7166fa522c94f8
[INFO] checking samsieber/rubber-duck against master#be181dd75c83d72fcc95538e235768bc367b76b9 for pr-140208
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamsieber%2Frubber-duck" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samsieber/rubber-duck on toolchain be181dd75c83d72fcc95538e235768bc367b76b9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+be181dd75c83d72fcc95538e235768bc367b76b9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/samsieber/rubber-duck
[INFO] finished tweaking git repo https://github.com/samsieber/rubber-duck
[INFO] tweaked toml for git repo https://github.com/samsieber/rubber-duck written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/samsieber/rubber-duck already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+be181dd75c83d72fcc95538e235768bc367b76b9" "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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+be181dd75c83d72fcc95538e235768bc367b76b9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa5f5225588f9afb5c99662222d6c926f1f0af5b5f697f252c3008195af9cc51
[INFO] running `Command { std: "docker" "start" "-a" "fa5f5225588f9afb5c99662222d6c926f1f0af5b5f697f252c3008195af9cc51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa5f5225588f9afb5c99662222d6c926f1f0af5b5f697f252c3008195af9cc51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa5f5225588f9afb5c99662222d6c926f1f0af5b5f697f252c3008195af9cc51", kill_on_drop: false }`
[INFO] [stdout] fa5f5225588f9afb5c99662222d6c926f1f0af5b5f697f252c3008195af9cc51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+be181dd75c83d72fcc95538e235768bc367b76b9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25fd0d0a26ec735e07680e8115e4275b03612d13f52ded3469a7ead5bb03c3cb
[INFO] running `Command { std: "docker" "start" "-a" "25fd0d0a26ec735e07680e8115e4275b03612d13f52ded3469a7ead5bb03c3cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking quote v0.6.10
[INFO] [stderr]     Checking syn v0.15.23
[INFO] [stderr]    Compiling proc-macro-hack v0.5.3
[INFO] [stderr]    Compiling rubber_duck_macro v0.2.0 (/opt/rustwide/workdir/rubber_duck_macro)
[INFO] [stdout] warning: unused import: `quote_spanned`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use quote::{quote, quote_spanned};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::spanned::Spanned`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::spanned::Spanned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExprMethodCall` and `Type`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:4:50
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{parse_macro_input, Expr, Ident, Token, Type, ExprMethodCall};
[INFO] [stdout]   |                                                  ^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `bracketed` and `parenthesized`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use syn::{braced, bracketed, parenthesized, parse_quote};
[INFO] [stdout]   |                   ^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::ExprCall`
[INFO] [stdout]   --> rubber_duck_macro/src/call.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use syn::ExprCall;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::export::ToTokens`
[INFO] [stdout]  --> rubber_duck_macro/src/builder.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::export::ToTokens;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Expr`, `Field`, `Fields`, `Item`, `Lit`, `MetaNameValue`, and `Meta`
[INFO] [stdout]  --> rubber_duck_macro/src/builder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Expr, Field, Fields, GenericArgument, Ident, Item, Lit, Meta, MetaNameValue,
[INFO] [stdout]   |     ^^^^  ^^^^^  ^^^^^^                          ^^^^  ^^^  ^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stdout]   --> rubber_duck_macro/src/builder.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::parse_fn::FieldRole;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stdout]  --> rubber_duck_macro/src/build.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::parse_fn::FieldRole;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `quote_spanned`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use quote::{quote, quote_spanned};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::spanned::Spanned`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::spanned::Spanned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `quote_spanned`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use quote::{quote, quote_spanned};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExprMethodCall` and `Type`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:4:50
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{parse_macro_input, Expr, Ident, Token, Type, ExprMethodCall};
[INFO] [stdout]   |                                                  ^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::spanned::Spanned`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::spanned::Spanned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExprMethodCall` and `Type`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:4:50
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{parse_macro_input, Expr, Ident, Token, Type, ExprMethodCall};
[INFO] [stdout]   |                                                  ^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `bracketed` and `parenthesized`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use syn::{braced, bracketed, parenthesized, parse_quote};
[INFO] [stdout]   |                   ^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `bracketed` and `parenthesized`
[INFO] [stdout]  --> rubber_duck_macro/src/call.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use syn::{braced, bracketed, parenthesized, parse_quote};
[INFO] [stdout]   |                   ^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::ExprCall`
[INFO] [stdout]   --> rubber_duck_macro/src/call.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use syn::ExprCall;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::ExprCall`
[INFO] [stdout]   --> rubber_duck_macro/src/call.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use syn::ExprCall;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::export::ToTokens`
[INFO] [stdout]  --> rubber_duck_macro/src/builder.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::export::ToTokens;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Expr`, `Field`, `Fields`, `Item`, `Lit`, `MetaNameValue`, and `Meta`
[INFO] [stdout]  --> rubber_duck_macro/src/builder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Expr, Field, Fields, GenericArgument, Ident, Item, Lit, Meta, MetaNameValue,
[INFO] [stdout]   |     ^^^^  ^^^^^  ^^^^^^                          ^^^^  ^^^  ^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stdout]   --> rubber_duck_macro/src/builder.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::parse_fn::FieldRole;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::export::ToTokens`
[INFO] [stdout]  --> rubber_duck_macro/src/builder.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::export::ToTokens;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Expr`, `Field`, `Fields`, `Item`, `Lit`, `MetaNameValue`, and `Meta`
[INFO] [stdout]  --> rubber_duck_macro/src/builder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Expr, Field, Fields, GenericArgument, Ident, Item, Lit, Meta, MetaNameValue,
[INFO] [stdout]   |     ^^^^  ^^^^^  ^^^^^^                          ^^^^  ^^^  ^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stdout]   --> rubber_duck_macro/src/builder.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::parse_fn::FieldRole;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stdout]  --> rubber_duck_macro/src/build.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::parse_fn::FieldRole;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parse_fn::FieldRole`
[INFO] [stdout]  --> rubber_duck_macro/src/build.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::parse_fn::FieldRole;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> rubber_duck_macro/src/call.rs:78:57
[INFO] [stdout]    |
[INFO] [stdout] 78 |                     brace.surround(&mut braced_tokens, |v|{});
[INFO] [stdout]    |                                                         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> rubber_duck_macro/src/call.rs:78:57
[INFO] [stdout]    |
[INFO] [stdout] 78 |                     brace.surround(&mut braced_tokens, |v|{});
[INFO] [stdout]    |                                                         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> rubber_duck_macro/src/call.rs:78:57
[INFO] [stdout]    |
[INFO] [stdout] 78 |                     brace.surround(&mut braced_tokens, |v|{});
[INFO] [stdout]    |                                                         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> rubber_duck_macro/src/build.rs:28:72
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let p_expr_expanders = structure.positional().enumerate().map(|(i, p)| {
[INFO] [stdout]    |                                                                        ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ExpressionList` is never constructed
[INFO] [stdout]   --> rubber_duck_macro/src/call.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct ExpressionList {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_builder` is never used
[INFO] [stdout]  --> rubber_duck_macro/src/build.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn gen_builder(structure: &parse_fn::Structure) -> ::proc_macro2::TokenStream {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> rubber_duck_macro/src/build.rs:28:72
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let p_expr_expanders = structure.positional().enumerate().map(|(i, p)| {
[INFO] [stdout]    |                                                                        ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> rubber_duck_macro/src/build.rs:28:72
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let p_expr_expanders = structure.positional().enumerate().map(|(i, p)| {
[INFO] [stdout]    |                                                                        ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ExpressionList` is never constructed
[INFO] [stdout]   --> rubber_duck_macro/src/call.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct ExpressionList {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_builder` is never used
[INFO] [stdout]  --> rubber_duck_macro/src/build.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn gen_builder(structure: &parse_fn::Structure) -> ::proc_macro2::TokenStream {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ExpressionList` is never constructed
[INFO] [stdout]   --> rubber_duck_macro/src/call.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct ExpressionList {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_builder` is never used
[INFO] [stdout]  --> rubber_duck_macro/src/build.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn gen_builder(structure: &parse_fn::Structure) -> ::proc_macro2::TokenStream {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] rustc-LLVM ERROR: IO failure on output stream: No space left on device
[INFO] [stderr] error: could not compile `rubber_duck_macro` (lib); 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/be181dd75c83d72fcc95538e235768bc367b76b9/bin/rustc --crate-name rubber_duck_macro --edition=2018 rubber_duck_macro/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no --cfg 'feature="default"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("default", "nightly"))' -C metadata=820ada50b7ce7003 -C extra-filename=-9258fd354c7e791c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro_hack=/opt/rustwide/target/debug/deps/libproc_macro_hack-9c829be643739889.so --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-aaacf05ff1928eca.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-b7b418223f5ed443.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-114fc2c2b9a9cd21.rlib --extern proc_macro --cap-lints=forbid` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "25fd0d0a26ec735e07680e8115e4275b03612d13f52ded3469a7ead5bb03c3cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25fd0d0a26ec735e07680e8115e4275b03612d13f52ded3469a7ead5bb03c3cb", kill_on_drop: false }`
[INFO] [stdout] 25fd0d0a26ec735e07680e8115e4275b03612d13f52ded3469a7ead5bb03c3cb