Dec 18 10:46:47.496 INFO checking stlog-0.3.2 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 10:46:47.496 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 10:46:47.666 INFO [stdout] 7b41fa7d809922c091d8c47c179a1c417db9679c935f8c3bc1af6fdffd991ecb
Dec 18 10:46:47.667 INFO running `"docker" "start" "-a" "7b41fa7d809922c091d8c47c179a1c417db9679c935f8c3bc1af6fdffd991ecb"`
Dec 18 10:46:48.489 INFO [stderr]    Compiling proc-macro2 v0.4.24
Dec 18 10:46:48.498 INFO [stderr]    Compiling unicode-xid v0.1.0
Dec 18 10:46:48.508 INFO [stderr]    Compiling libc v0.2.45
Dec 18 10:46:49.824 INFO [stderr]    Compiling backtrace-sys v0.1.26
Dec 18 10:46:50.010 INFO [stderr]    Compiling backtrace v0.3.13
Dec 18 10:46:51.128 INFO [stderr]    Compiling quote v0.6.10
Dec 18 10:46:51.748 INFO [stderr]    Compiling syn v0.15.23
Dec 18 10:47:06.514 INFO [stderr]    Compiling synstructure v0.10.1
Dec 18 10:47:06.515 INFO [stderr]    Compiling stlog-macros v0.1.1
Dec 18 10:47:11.924 INFO [stderr]    Compiling failure_derive v0.1.3
Dec 18 10:47:14.654 INFO [stderr]    Compiling failure v0.1.3
Dec 18 10:47:15.586 INFO [stderr]    Compiling stlog v0.3.2 (/opt/crater/workdir)
Dec 18 10:47:17.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:47:17.552 INFO [stderr]   --> examples/local.rs:18:5
Dec 18 10:47:17.552 INFO [stderr]    |
Dec 18 10:47:17.552 INFO [stderr] 18 |     info!(logger, "Hello!");
Dec 18 10:47:17.552 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:47:17.552 INFO [stderr]    |
Dec 18 10:47:17.552 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 10:47:17.552 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:47:17.552 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 10:47:17.552 INFO [stderr] 
Dec 18 10:47:17.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 10:47:17.552 INFO [stderr]   --> examples/local.rs:19:5
Dec 18 10:47:17.552 INFO [stderr]    |
Dec 18 10:47:17.552 INFO [stderr] 19 |     error!(logger, "Bye!");
Dec 18 10:47:17.552 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 10:47:17.552 INFO [stderr]    |
Dec 18 10:47:17.552 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 10:47:17.552 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 10:47:17.552 INFO [stderr] 
Dec 18 10:47:17.580 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.16s
Dec 18 10:47:18.515 INFO running `"docker" "inspect" "7b41fa7d809922c091d8c47c179a1c417db9679c935f8c3bc1af6fdffd991ecb"`
Dec 18 10:47:18.790 INFO running `"docker" "rm" "-f" "7b41fa7d809922c091d8c47c179a1c417db9679c935f8c3bc1af6fdffd991ecb"`
Dec 18 10:47:19.084 INFO [stdout] 7b41fa7d809922c091d8c47c179a1c417db9679c935f8c3bc1af6fdffd991ecb