Dec 12 09:46:25.017 INFO checking prometheus-static-metric-0.1.4 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 09:46:25.017 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 09:46:25.228 INFO [stdout] fbb2bfab69166bef726545387fdca0f00f61e57940718ab3d7abb0ab8d282956
Dec 12 09:46:25.232 INFO running `"docker" "start" "-a" "fbb2bfab69166bef726545387fdca0f00f61e57940718ab3d7abb0ab8d282956"`
Dec 12 09:46:25.800 INFO [stderr] usermod: no changes
Dec 12 09:46:25.877 INFO [stderr]     Checking syn v0.13.11
Dec 12 09:46:32.626 INFO [stderr]     Checking prometheus-static-metric v0.1.4 (/source)
Dec 12 09:46:33.632 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 09:46:33.632 INFO [stderr]   --> src/lib.rs:22:1
Dec 12 09:46:33.632 INFO [stderr]    |
Dec 12 09:46:33.632 INFO [stderr] 22 | #[macro_use]
Dec 12 09:46:33.632 INFO [stderr]    | ^^^^^^^^^^^^
Dec 12 09:46:33.632 INFO [stderr]    |
Dec 12 09:46:33.632 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 09:46:33.632 INFO [stderr] 
Dec 12 09:46:33.715 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 09:46:33.715 INFO [stderr]   --> src/lib.rs:22:1
Dec 12 09:46:33.715 INFO [stderr]    |
Dec 12 09:46:33.715 INFO [stderr] 22 | #[macro_use]
Dec 12 09:46:33.715 INFO [stderr]    | ^^^^^^^^^^^^
Dec 12 09:46:33.715 INFO [stderr]    |
Dec 12 09:46:33.715 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 09:46:33.715 INFO [stderr] 
Dec 12 09:46:34.224 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 12 09:46:34.224 INFO [stderr]   --> src/lib.rs:14:12
Dec 12 09:46:34.224 INFO [stderr]    |
Dec 12 09:46:34.224 INFO [stderr] 14 | #![feature(proc_macro)]
Dec 12 09:46:34.224 INFO [stderr]    |            ^^^^^^^^^^
Dec 12 09:46:34.224 INFO [stderr]    |
Dec 12 09:46:34.224 INFO [stderr]    = note: #[warn(stable_features)] on by default
Dec 12 09:46:34.224 INFO [stderr] 
Dec 12 09:46:34.279 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 12 09:46:34.279 INFO [stderr]   --> src/lib.rs:14:12
Dec 12 09:46:34.279 INFO [stderr]    |
Dec 12 09:46:34.279 INFO [stderr] 14 | #![feature(proc_macro)]
Dec 12 09:46:34.279 INFO [stderr]    |            ^^^^^^^^^^
Dec 12 09:46:34.279 INFO [stderr]    |
Dec 12 09:46:34.279 INFO [stderr]    = note: #[warn(stable_features)] on by default
Dec 12 09:46:34.279 INFO [stderr] 
Dec 12 09:46:34.361 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.52s
Dec 12 09:46:34.369 INFO [stderr] su: No module specific data is present
Dec 12 09:46:36.014 INFO running `"docker" "inspect" "fbb2bfab69166bef726545387fdca0f00f61e57940718ab3d7abb0ab8d282956"`
Dec 12 09:46:36.270 INFO running `"docker" "rm" "-f" "fbb2bfab69166bef726545387fdca0f00f61e57940718ab3d7abb0ab8d282956"`
Dec 12 09:46:36.544 INFO [stdout] fbb2bfab69166bef726545387fdca0f00f61e57940718ab3d7abb0ab8d282956