Dec 18 09:48:53.338 INFO checking ubend-0.2.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 09:48:53.338 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/ubend/0.2.1:/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 09:48:53.714 INFO [stdout] 9e05a347b2aa91de74d59293cd5a289eb30fd61448e339ce2b9822a04f0e4301
Dec 18 09:48:53.716 INFO running `"docker" "start" "-a" "9e05a347b2aa91de74d59293cd5a289eb30fd61448e339ce2b9822a04f0e4301"`
Dec 18 09:48:54.530 INFO [stderr]     Checking ubend v0.2.1 (/opt/crater/workdir)
Dec 18 09:48:55.744 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:48:55.744 INFO [stderr]    --> tests/main.rs:180:3
Dec 18 09:48:55.744 INFO [stderr]     |
Dec 18 09:48:55.744 INFO [stderr] 180 |         write!(stream, "hello world");
Dec 18 09:48:55.744 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:48:55.744 INFO [stderr]     |
Dec 18 09:48:55.744 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 09:48:55.744 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:48:55.744 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 09:48:55.744 INFO [stderr] 
Dec 18 09:48:55.744 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:48:55.744 INFO [stderr]    --> tests/main.rs:211:3
Dec 18 09:48:55.744 INFO [stderr]     |
Dec 18 09:48:55.744 INFO [stderr] 211 |         write!(stream, "spam\neggs\nspam spam\n");
Dec 18 09:48:55.744 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:48:55.744 INFO [stderr]     |
Dec 18 09:48:55.744 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:48:55.744 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 09:48:55.745 INFO [stderr] 
Dec 18 09:48:55.788 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
Dec 18 09:48:56.192 INFO running `"docker" "inspect" "9e05a347b2aa91de74d59293cd5a289eb30fd61448e339ce2b9822a04f0e4301"`
Dec 18 09:48:56.290 INFO running `"docker" "rm" "-f" "9e05a347b2aa91de74d59293cd5a289eb30fd61448e339ce2b9822a04f0e4301"`
Dec 18 09:48:56.404 INFO [stdout] 9e05a347b2aa91de74d59293cd5a289eb30fd61448e339ce2b9822a04f0e4301