Dec 18 10:46:47.264 INFO checking stlog-0.3.2 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 10:46:47.264 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/stlog/0.3.2:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 10:46:47.417 INFO [stdout] e7cd70b76eb5b9b7601ef278259d60cb7dc0e71c7514a52b2f91d602b203223a
Dec 18 10:46:47.422 INFO running `"docker" "start" "-a" "e7cd70b76eb5b9b7601ef278259d60cb7dc0e71c7514a52b2f91d602b203223a"`
Dec 18 10:46:48.072 INFO [stderr]    Compiling proc-macro2 v0.4.24
Dec 18 10:46:48.072 INFO [stderr]    Compiling unicode-xid v0.1.0
Dec 18 10:46:48.076 INFO [stderr]    Compiling libc v0.2.45
Dec 18 10:46:49.353 INFO [stderr]    Compiling backtrace-sys v0.1.26
Dec 18 10:46:49.530 INFO [stderr]    Compiling backtrace v0.3.13
Dec 18 10:46:50.809 INFO [stderr]    Compiling quote v0.6.10
Dec 18 10:46:51.406 INFO [stderr]    Compiling syn v0.15.23
Dec 18 10:47:06.679 INFO [stderr]    Compiling synstructure v0.10.1
Dec 18 10:47:06.681 INFO [stderr]    Compiling stlog-macros v0.1.1
Dec 18 10:47:11.627 INFO [stderr]    Compiling failure_derive v0.1.3
Dec 18 10:47:14.146 INFO [stderr]    Compiling failure v0.1.3
Dec 18 10:47:15.148 INFO [stderr]    Compiling stlog v0.3.2 (/opt/crater/workdir)
Dec 18 10:47:17.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:47:17.270 INFO [stderr]   --> examples/local.rs:18:5
Dec 18 10:47:17.270 INFO [stderr]    |
Dec 18 10:47:17.270 INFO [stderr] 18 |     info!(logger, "Hello!");
Dec 18 10:47:17.270 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:47:17.271 INFO [stderr]    |
Dec 18 10:47:17.271 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 10:47:17.271 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:47:17.272 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 18 10:47:17.272 INFO [stderr] 
Dec 18 10:47:17.273 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:47:17.273 INFO [stderr]   --> examples/local.rs:19:5
Dec 18 10:47:17.273 INFO [stderr]    |
Dec 18 10:47:17.274 INFO [stderr] 19 |     error!(logger, "Bye!");
Dec 18 10:47:17.274 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:47:17.274 INFO [stderr]    |
Dec 18 10:47:17.274 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:47:17.275 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 18 10:47:17.275 INFO [stderr] 
Dec 18 10:47:17.322 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.30s
Dec 18 10:47:18.520 INFO running `"docker" "inspect" "e7cd70b76eb5b9b7601ef278259d60cb7dc0e71c7514a52b2f91d602b203223a"`
Dec 18 10:47:18.870 INFO running `"docker" "rm" "-f" "e7cd70b76eb5b9b7601ef278259d60cb7dc0e71c7514a52b2f91d602b203223a"`
Dec 18 10:47:19.172 INFO [stdout] e7cd70b76eb5b9b7601ef278259d60cb7dc0e71c7514a52b2f91d602b203223a