Dec 18 12:49:02.938 INFO checking prometheus-static-metric-0.1.4 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 12:49:02.938 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/prometheus-static-metric/0.1.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 12:49:03.090 INFO [stdout] fd4c047c8953c301959b63e5276a5b5f5e7d976741751997ec32a5d823b0692c
Dec 18 12:49:03.092 INFO running `"docker" "start" "-a" "fd4c047c8953c301959b63e5276a5b5f5e7d976741751997ec32a5d823b0692c"`
Dec 18 12:49:04.017 INFO [stderr]     Checking proc-macro2 v0.3.8
Dec 18 12:49:04.796 INFO [stderr]     Checking quote v0.5.2
Dec 18 12:49:05.175 INFO [stderr]     Checking syn v0.13.11
Dec 18 12:49:11.626 INFO [stderr]     Checking prometheus-static-metric v0.1.4 (/opt/crater/workdir)
Dec 18 12:49:11.964 INFO [stderr] warning: unused `#[macro_use]` import
Dec 18 12:49:11.964 INFO [stderr]   --> src/lib.rs:22:1
Dec 18 12:49:11.964 INFO [stderr]    |
Dec 18 12:49:11.964 INFO [stderr] 22 | #[macro_use]
Dec 18 12:49:11.964 INFO [stderr]    | ^^^^^^^^^^^^
Dec 18 12:49:11.964 INFO [stderr]    |
Dec 18 12:49:11.964 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 12:49:11.964 INFO [stderr] 
Dec 18 12:49:11.964 INFO [stderr] warning: unused `#[macro_use]` import
Dec 18 12:49:11.964 INFO [stderr]   --> src/lib.rs:22:1
Dec 18 12:49:11.964 INFO [stderr]    |
Dec 18 12:49:11.964 INFO [stderr] 22 | #[macro_use]
Dec 18 12:49:11.964 INFO [stderr]    | ^^^^^^^^^^^^
Dec 18 12:49:11.964 INFO [stderr]    |
Dec 18 12:49:11.964 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 12:49:11.964 INFO [stderr] 
Dec 18 12:49:12.268 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 18 12:49:12.268 INFO [stderr]   --> src/lib.rs:14:12
Dec 18 12:49:12.268 INFO [stderr]    |
Dec 18 12:49:12.268 INFO [stderr] 14 | #![feature(proc_macro)]
Dec 18 12:49:12.268 INFO [stderr]    |            ^^^^^^^^^^
Dec 18 12:49:12.268 INFO [stderr]    |
Dec 18 12:49:12.268 INFO [stderr]    = note: #[warn(stable_features)] on by default
Dec 18 12:49:12.268 INFO [stderr] 
Dec 18 12:49:12.284 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 18 12:49:12.284 INFO [stderr]   --> src/lib.rs:14:12
Dec 18 12:49:12.284 INFO [stderr]    |
Dec 18 12:49:12.284 INFO [stderr] 14 | #![feature(proc_macro)]
Dec 18 12:49:12.284 INFO [stderr]    |            ^^^^^^^^^^
Dec 18 12:49:12.284 INFO [stderr]    |
Dec 18 12:49:12.284 INFO [stderr]    = note: #[warn(stable_features)] on by default
Dec 18 12:49:12.284 INFO [stderr] 
Dec 18 12:49:12.308 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.34s
Dec 18 12:49:12.601 INFO running `"docker" "inspect" "fd4c047c8953c301959b63e5276a5b5f5e7d976741751997ec32a5d823b0692c"`
Dec 18 12:49:12.683 INFO running `"docker" "rm" "-f" "fd4c047c8953c301959b63e5276a5b5f5e7d976741751997ec32a5d823b0692c"`
Dec 18 12:49:12.810 INFO [stdout] fd4c047c8953c301959b63e5276a5b5f5e7d976741751997ec32a5d823b0692c