[INFO] crate lain_derive 0.2.4 is already in cache
[INFO] testing lain_derive-0.2.4 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate lain_derive 0.2.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lain_derive 0.2.4 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lain_derive 0.2.4
[INFO] finished tweaking crates.io crate lain_derive 0.2.4
[INFO] tweaked toml for crates.io crate lain_derive 0.2.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8e30548e1b715760cdf141a83bb64cd5268272e0bba14f289bb936d887cdfb4e
[INFO] running `"docker" "start" "-a" "8e30548e1b715760cdf141a83bb64cd5268272e0bba14f289bb936d887cdfb4e"`
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling proc-macro-hack v0.4.2
[INFO] [stderr]    Compiling mashup-impl v0.1.9
[INFO] [stderr]    Compiling mashup v0.1.9
[INFO] [stderr]    Compiling lain_derive v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `field_max_items`
[INFO] [stderr]    --> src/mutations.rs:513:9
[INFO] [stderr]     |
[INFO] [stderr] 513 |     let field_max_items = field.attrs.min().unwrap_or(&zero_tokens);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_field_max_items`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.63s
[INFO] running `"docker" "inspect" "8e30548e1b715760cdf141a83bb64cd5268272e0bba14f289bb936d887cdfb4e"`
[INFO] running `"docker" "rm" "-f" "8e30548e1b715760cdf141a83bb64cd5268272e0bba14f289bb936d887cdfb4e"`
[INFO] [stdout] 8e30548e1b715760cdf141a83bb64cd5268272e0bba14f289bb936d887cdfb4e
[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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 08b5f0689667266ada328498cd31dc0afea849e42c888c7ac2c391f25e38ddda
[INFO] running `"docker" "start" "-a" "08b5f0689667266ada328498cd31dc0afea849e42c888c7ac2c391f25e38ddda"`
[INFO] [stderr]    Compiling lain_derive v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `field_max_items`
[INFO] [stderr]    --> src/mutations.rs:513:9
[INFO] [stderr]     |
[INFO] [stderr] 513 |     let field_max_items = field.attrs.min().unwrap_or(&zero_tokens);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_field_max_items`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field_max_items`
[INFO] [stderr]    --> src/mutations.rs:513:9
[INFO] [stderr]     |
[INFO] [stderr] 513 |     let field_max_items = field.attrs.min().unwrap_or(&zero_tokens);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_field_max_items`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `"docker" "inspect" "08b5f0689667266ada328498cd31dc0afea849e42c888c7ac2c391f25e38ddda"`
[INFO] running `"docker" "rm" "-f" "08b5f0689667266ada328498cd31dc0afea849e42c888c7ac2c391f25e38ddda"`
[INFO] [stdout] 08b5f0689667266ada328498cd31dc0afea849e42c888c7ac2c391f25e38ddda
[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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c0926c66f60b0682da5833465a421918b68a17b3b8e38031169c26bf008debec
[INFO] running `"docker" "start" "-a" "c0926c66f60b0682da5833465a421918b68a17b3b8e38031169c26bf008debec"`
[INFO] [stderr] warning: unused variable: `field_max_items`
[INFO] [stderr]    --> src/mutations.rs:513:9
[INFO] [stderr]     |
[INFO] [stderr] 513 |     let field_max_items = field.attrs.min().unwrap_or(&zero_tokens);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_field_max_items`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field_max_items`
[INFO] [stderr]    --> src/mutations.rs:513:9
[INFO] [stderr]     |
[INFO] [stderr] 513 |     let field_max_items = field.attrs.min().unwrap_or(&zero_tokens);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_field_max_items`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lain_derive-d88806741de98051
[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 lain_derive
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - new_fuzzed (line 36) ... ok
[INFO] [stdout] test src/lib.rs - variable_size_object (line 156) ... ok
[INFO] [stdout] test src/lib.rs - binary_serialize (line 60) ... ok
[INFO] [stdout] test src/lib.rs - mutatable_helper (line 119) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c0926c66f60b0682da5833465a421918b68a17b3b8e38031169c26bf008debec"`
[INFO] running `"docker" "rm" "-f" "c0926c66f60b0682da5833465a421918b68a17b3b8e38031169c26bf008debec"`
[INFO] [stdout] c0926c66f60b0682da5833465a421918b68a17b3b8e38031169c26bf008debec