Dec 17 18:09:34.121 INFO checking panzi/rust-ubend against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 18:09:34.121 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 18:09:34.540 INFO [stdout] e8fe2ea68e587d95664ecb42913c4a221488999f54584d1bdf3218baf2d29f43
Dec 17 18:09:34.546 INFO running `"docker" "start" "-a" "e8fe2ea68e587d95664ecb42913c4a221488999f54584d1bdf3218baf2d29f43"`
Dec 17 18:09:35.857 INFO [stderr]     Checking libc v0.2.43
Dec 17 18:09:37.160 INFO [stderr]     Checking ubend v0.2.1 (/opt/crater/workdir)
Dec 17 18:09:38.495 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 18:09:38.495 INFO [stderr]    --> tests/main.rs:180:3
Dec 17 18:09:38.495 INFO [stderr]     |
Dec 17 18:09:38.495 INFO [stderr] 180 |         write!(stream, "hello world");
Dec 17 18:09:38.495 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:09:38.495 INFO [stderr]     |
Dec 17 18:09:38.495 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 18:09:38.495 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 18:09:38.495 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 17 18:09:38.495 INFO [stderr] 
Dec 17 18:09:38.495 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 18:09:38.495 INFO [stderr]    --> tests/main.rs:211:3
Dec 17 18:09:38.495 INFO [stderr]     |
Dec 17 18:09:38.495 INFO [stderr] 211 |         write!(stream, "spam\neggs\nspam spam\n");
Dec 17 18:09:38.495 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:09:38.495 INFO [stderr]     |
Dec 17 18:09:38.495 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 18:09:38.495 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 17 18:09:38.495 INFO [stderr] 
Dec 17 18:09:38.521 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.68s
Dec 17 18:09:39.192 INFO running `"docker" "inspect" "e8fe2ea68e587d95664ecb42913c4a221488999f54584d1bdf3218baf2d29f43"`
Dec 17 18:09:39.411 INFO running `"docker" "rm" "-f" "e8fe2ea68e587d95664ecb42913c4a221488999f54584d1bdf3218baf2d29f43"`
Dec 17 18:09:39.694 INFO [stdout] e8fe2ea68e587d95664ecb42913c4a221488999f54584d1bdf3218baf2d29f43