[INFO] crate serde-ext-macros 0.1.1 is already in cache
[INFO] testing serde-ext-macros-0.1.1 against 1.38.0 for beta-1.39-1
[INFO] extracting crate serde-ext-macros 0.1.1 into work/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde-ext-macros 0.1.1 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 serde-ext-macros 0.1.1
[INFO] finished tweaking crates.io crate serde-ext-macros 0.1.1
[INFO] tweaked toml for crates.io crate serde-ext-macros 0.1.1 written to work/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] b04e2c00d1f4ae2be25bce6cef9eb8cd9b53e5feab16e78cb24b132d2121f27f
[INFO] running `"docker" "start" "-a" "b04e2c00d1f4ae2be25bce6cef9eb8cd9b53e5feab16e78cb24b132d2121f27f"`
[INFO] [stderr]    Compiling serde-ext-macros v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `out`
[INFO] [stderr]   --> src/lib.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let out = item.clone();
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_out`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attrs`
[INFO] [stderr]   --> src/lib.rs:10:21
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn extend_serde(attrs: TokenStream, item: TokenStream) -> TokenStream {
[INFO] [stderr]    |                     ^^^^^ help: consider prefixing with an underscore: `_attrs`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.10s
[INFO] running `"docker" "inspect" "b04e2c00d1f4ae2be25bce6cef9eb8cd9b53e5feab16e78cb24b132d2121f27f"`
[INFO] running `"docker" "rm" "-f" "b04e2c00d1f4ae2be25bce6cef9eb8cd9b53e5feab16e78cb24b132d2121f27f"`
[INFO] [stdout] b04e2c00d1f4ae2be25bce6cef9eb8cd9b53e5feab16e78cb24b132d2121f27f
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] e478d927f3753583d3a967cb8965682980b0dd235568c79942f024a20f138589
[INFO] running `"docker" "start" "-a" "e478d927f3753583d3a967cb8965682980b0dd235568c79942f024a20f138589"`
[INFO] [stderr]    Compiling serde-ext-macros v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `out`
[INFO] [stderr]   --> src/lib.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let out = item.clone();
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_out`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `attrs`
[INFO] [stderr]   --> src/lib.rs:10:21
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn extend_serde(attrs: TokenStream, item: TokenStream) -> TokenStream {
[INFO] [stderr]    |                     ^^^^^ help: consider prefixing with an underscore: `_attrs`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "e478d927f3753583d3a967cb8965682980b0dd235568c79942f024a20f138589"`
[INFO] running `"docker" "rm" "-f" "e478d927f3753583d3a967cb8965682980b0dd235568c79942f024a20f138589"`
[INFO] [stdout] e478d927f3753583d3a967cb8965682980b0dd235568c79942f024a20f138589
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] 7a51a073c1a40caaabb9fec7f53ec0792c4e04e889ef56b2695c8a768dba5325
[INFO] running `"docker" "start" "-a" "7a51a073c1a40caaabb9fec7f53ec0792c4e04e889ef56b2695c8a768dba5325"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_ext_macros-71fdfcfc8237694e
[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] [stderr]    Doc-tests serde-ext-macros
[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" "7a51a073c1a40caaabb9fec7f53ec0792c4e04e889ef56b2695c8a768dba5325"`
[INFO] running `"docker" "rm" "-f" "7a51a073c1a40caaabb9fec7f53ec0792c4e04e889ef56b2695c8a768dba5325"`
[INFO] [stdout] 7a51a073c1a40caaabb9fec7f53ec0792c4e04e889ef56b2695c8a768dba5325