Dec 19 21:45:43.715 INFO checking Tahler/assembler against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:45:43.715 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/Tahler/assembler:/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 21:45:44.264 INFO [stdout] 8fefaaf7dec1af558444c29f42eade667ba01205e25e533d1cce4db15964710f
Dec 19 21:45:44.272 INFO running `"docker" "start" "-a" "8fefaaf7dec1af558444c29f42eade667ba01205e25e533d1cce4db15964710f"`
Dec 19 21:45:46.312 INFO [stderr]     Checking assembler v0.1.0 (/opt/crater/workdir)
Dec 19 21:45:46.940 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:45:46.941 INFO [stderr]    --> src/main.rs:133:9
Dec 19 21:45:46.941 INFO [stderr]     |
Dec 19 21:45:46.941 INFO [stderr] 133 |         fs::remove_file(out_path);
Dec 19 21:45:46.942 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:45:46.942 INFO [stderr]     |
Dec 19 21:45:46.942 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 21:45:46.943 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:45:46.943 INFO [stderr] 
Dec 19 21:45:46.944 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:45:46.944 INFO [stderr]    --> src/main.rs:143:21
Dec 19 21:45:46.944 INFO [stderr]     |
Dec 19 21:45:46.945 INFO [stderr] 143 |                     out_file.write_all(&instruction_bytes);
Dec 19 21:45:46.945 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:45:46.945 INFO [stderr]     |
Dec 19 21:45:46.946 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:45:46.946 INFO [stderr] 
Dec 19 21:45:47.012 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:45:47.012 INFO [stderr]    --> src/main.rs:133:9
Dec 19 21:45:47.012 INFO [stderr]     |
Dec 19 21:45:47.012 INFO [stderr] 133 |         fs::remove_file(out_path);
Dec 19 21:45:47.012 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:45:47.012 INFO [stderr]     |
Dec 19 21:45:47.012 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 21:45:47.012 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:45:47.012 INFO [stderr] 
Dec 19 21:45:47.012 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:45:47.012 INFO [stderr]    --> src/main.rs:143:21
Dec 19 21:45:47.012 INFO [stderr]     |
Dec 19 21:45:47.012 INFO [stderr] 143 |                     out_file.write_all(&instruction_bytes);
Dec 19 21:45:47.012 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:45:47.012 INFO [stderr]     |
Dec 19 21:45:47.012 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:45:47.012 INFO [stderr] 
Dec 19 21:45:47.046 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
Dec 19 21:45:47.992 INFO running `"docker" "inspect" "8fefaaf7dec1af558444c29f42eade667ba01205e25e533d1cce4db15964710f"`
Dec 19 21:45:48.312 INFO running `"docker" "rm" "-f" "8fefaaf7dec1af558444c29f42eade667ba01205e25e533d1cce4db15964710f"`
Dec 19 21:45:48.576 INFO [stdout] 8fefaaf7dec1af558444c29f42eade667ba01205e25e533d1cce4db15964710f