Dec 19 11:15:18.404 INFO checking panzi/rust-ubend against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 11:15:18.404 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/panzi/rust-ubend:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:15:18.789 INFO [stdout] 5d005104e29c96460de8d1d806717c009b89c595b49d5d446297845337fec2a8
Dec 19 11:15:18.791 INFO running `"docker" "start" "-a" "5d005104e29c96460de8d1d806717c009b89c595b49d5d446297845337fec2a8"`
Dec 19 11:15:20.644 INFO [stderr]     Checking libc v0.2.43
Dec 19 11:15:21.901 INFO [stderr]     Checking ubend v0.2.1 (/opt/crater/workdir)
Dec 19 11:15:23.216 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 11:15:23.217 INFO [stderr]    --> tests/main.rs:180:3
Dec 19 11:15:23.217 INFO [stderr]     |
Dec 19 11:15:23.217 INFO [stderr] 180 |         write!(stream, "hello world");
Dec 19 11:15:23.217 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:15:23.217 INFO [stderr]     |
Dec 19 11:15:23.217 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 11:15:23.217 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 11:15:23.217 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 19 11:15:23.217 INFO [stderr] 
Dec 19 11:15:23.217 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 11:15:23.217 INFO [stderr]    --> tests/main.rs:211:3
Dec 19 11:15:23.217 INFO [stderr]     |
Dec 19 11:15:23.217 INFO [stderr] 211 |         write!(stream, "spam\neggs\nspam spam\n");
Dec 19 11:15:23.217 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:15:23.217 INFO [stderr]     |
Dec 19 11:15:23.217 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 11:15:23.217 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 19 11:15:23.217 INFO [stderr] 
Dec 19 11:15:23.268 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.64s
Dec 19 11:15:24.017 INFO running `"docker" "inspect" "5d005104e29c96460de8d1d806717c009b89c595b49d5d446297845337fec2a8"`
Dec 19 11:15:24.238 INFO running `"docker" "rm" "-f" "5d005104e29c96460de8d1d806717c009b89c595b49d5d446297845337fec2a8"`
Dec 19 11:15:24.488 INFO [stdout] 5d005104e29c96460de8d1d806717c009b89c595b49d5d446297845337fec2a8