Dec 12 07:28:22.436 INFO checking singleton-derive-0.1.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 07:28:22.436 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 07:28:22.596 INFO [stdout] 66b4f8435f98290711abfd65af985a7a3cbbcade6027a3edff98e9cc527017cf
Dec 12 07:28:22.598 INFO running `"docker" "start" "-a" "66b4f8435f98290711abfd65af985a7a3cbbcade6027a3edff98e9cc527017cf"`
Dec 12 07:28:23.484 INFO [stderr] usermod: no changes
Dec 12 07:28:23.556 INFO [stderr]     Checking heck v0.3.0
Dec 12 07:28:24.048 INFO [stderr]     Checking singleton-derive v0.1.0 (/source)
Dec 12 07:28:25.340 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 07:28:25.340 INFO [stderr]  --> src/lib.rs:5:1
Dec 12 07:28:25.340 INFO [stderr]   |
Dec 12 07:28:25.340 INFO [stderr] 5 | #[macro_use]
Dec 12 07:28:25.340 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 07:28:25.340 INFO [stderr]   |
Dec 12 07:28:25.340 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 07:28:25.340 INFO [stderr] 
Dec 12 07:28:25.348 INFO [stderr] warning: unused import: `failure::Error`
Dec 12 07:28:25.348 INFO [stderr]  --> src/lib.rs:9:5
Dec 12 07:28:25.348 INFO [stderr]   |
Dec 12 07:28:25.348 INFO [stderr] 9 | use failure::Error;
Dec 12 07:28:25.348 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 12 07:28:25.348 INFO [stderr] 
Dec 12 07:28:25.376 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 07:28:25.376 INFO [stderr]  --> src/lib.rs:5:1
Dec 12 07:28:25.376 INFO [stderr]   |
Dec 12 07:28:25.376 INFO [stderr] 5 | #[macro_use]
Dec 12 07:28:25.376 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 07:28:25.376 INFO [stderr]   |
Dec 12 07:28:25.376 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 07:28:25.376 INFO [stderr] 
Dec 12 07:28:25.376 INFO [stderr] warning: unused import: `failure::Error`
Dec 12 07:28:25.376 INFO [stderr]  --> src/lib.rs:9:5
Dec 12 07:28:25.376 INFO [stderr]   |
Dec 12 07:28:25.376 INFO [stderr] 9 | use failure::Error;
Dec 12 07:28:25.376 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 12 07:28:25.376 INFO [stderr] 
Dec 12 07:28:25.440 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.93s
Dec 12 07:28:25.444 INFO [stderr] su: No module specific data is present
Dec 12 07:28:25.935 INFO running `"docker" "inspect" "66b4f8435f98290711abfd65af985a7a3cbbcade6027a3edff98e9cc527017cf"`
Dec 12 07:28:26.040 INFO running `"docker" "rm" "-f" "66b4f8435f98290711abfd65af985a7a3cbbcade6027a3edff98e9cc527017cf"`
Dec 12 07:28:26.216 INFO [stdout] 66b4f8435f98290711abfd65af985a7a3cbbcade6027a3edff98e9cc527017cf