Dec 17 13:26:31.544 INFO checking tobiaskrause/graphml2mm against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 13:26:31.544 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/tobiaskrause/graphml2mm:/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 17 13:26:31.934 INFO [stdout] a3a1adc3c63823b0f48001c67bced3e4756a5b6dda190836db23f7f9b8a9fab9
Dec 17 13:26:31.938 INFO running `"docker" "start" "-a" "a3a1adc3c63823b0f48001c67bced3e4756a5b6dda190836db23f7f9b8a9fab9"`
Dec 17 13:26:33.892 INFO [stderr]     Checking libc v0.2.37
Dec 17 13:26:33.892 INFO [stderr]     Checking xml-rs v0.7.0
Dec 17 13:26:33.904 INFO [stderr]    Compiling syn v0.12.13
Dec 17 13:26:35.664 INFO [stderr]     Checking atty v0.2.6
Dec 17 13:26:35.932 INFO [stderr]     Checking clap v2.30.0
Dec 17 13:26:45.373 INFO [stderr]    Compiling structopt-derive v0.2.4
Dec 17 13:26:48.876 INFO [stderr]     Checking structopt v0.2.4
Dec 17 13:26:49.135 INFO [stderr]     Checking graphml2mm v0.1.0 (/opt/crater/workdir)
Dec 17 13:26:50.008 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 13:26:50.008 INFO [stderr]   --> src/graph/writer.rs:68:9
Dec 17 13:26:50.008 INFO [stderr]    |
Dec 17 13:26:50.008 INFO [stderr] 68 |         mm_writer(&mut writer, &events);
Dec 17 13:26:50.008 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:26:50.008 INFO [stderr]    |
Dec 17 13:26:50.008 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 13:26:50.008 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 13:26:50.008 INFO [stderr] 
Dec 17 13:26:50.066 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 13:26:50.066 INFO [stderr]  --> src/main.rs:2:1
Dec 17 13:26:50.066 INFO [stderr]   |
Dec 17 13:26:50.066 INFO [stderr] 2 | #[macro_use]
Dec 17 13:26:50.066 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 13:26:50.066 INFO [stderr]   |
Dec 17 13:26:50.066 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 13:26:50.066 INFO [stderr] 
Dec 17 13:26:50.163 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 13:26:50.163 INFO [stderr]  --> src/main.rs:2:1
Dec 17 13:26:50.163 INFO [stderr]   |
Dec 17 13:26:50.163 INFO [stderr] 2 | #[macro_use]
Dec 17 13:26:50.163 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 13:26:50.163 INFO [stderr]   |
Dec 17 13:26:50.163 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 13:26:50.163 INFO [stderr] 
Dec 17 13:26:50.372 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.59s
Dec 17 13:26:51.568 INFO running `"docker" "inspect" "a3a1adc3c63823b0f48001c67bced3e4756a5b6dda190836db23f7f9b8a9fab9"`
Dec 17 13:26:51.946 INFO running `"docker" "rm" "-f" "a3a1adc3c63823b0f48001c67bced3e4756a5b6dda190836db23f7f9b8a9fab9"`
Dec 17 13:26:52.289 INFO [stdout] a3a1adc3c63823b0f48001c67bced3e4756a5b6dda190836db23f7f9b8a9fab9