Dec 19 08:21:14.889 INFO checking spebern/poc1to2 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 08:21:14.889 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/spebern/poc1to2:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 08:21:15.332 INFO [stdout] 35101d565c26b2c45075e34f4310cd8ad4ffb2ee6e29784bb9f62934124dc6d5
Dec 19 08:21:15.336 INFO running `"docker" "start" "-a" "35101d565c26b2c45075e34f4310cd8ad4ffb2ee6e29784bb9f62934124dc6d5"`
Dec 19 08:21:16.812 INFO [stderr]     Checking clap v2.30.0
Dec 19 08:21:21.468 INFO [stderr]     Checking poc1to2 v0.1.0 (/opt/crater/workdir)
Dec 19 08:21:21.979 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:21:21.979 INFO [stderr]    --> src/main.rs:175:9
Dec 19 08:21:21.979 INFO [stderr]     |
Dec 19 08:21:21.979 INFO [stderr] 175 |         fs::copy(plot_file.to_owned() + ".orig", plot_file);
Dec 19 08:21:21.979 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:21:21.979 INFO [stderr]     |
Dec 19 08:21:21.979 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 08:21:21.979 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:21:21.979 INFO [stderr] 
Dec 19 08:21:21.979 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:21:21.979 INFO [stderr]    --> src/main.rs:189:9
Dec 19 08:21:21.979 INFO [stderr]     |
Dec 19 08:21:21.979 INFO [stderr] 189 |         File::open(&poc2_plot_file).unwrap().read_to_end(&mut buffer);
Dec 19 08:21:21.979 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:21:21.979 INFO [stderr]     |
Dec 19 08:21:21.979 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:21:21.979 INFO [stderr] 
Dec 19 08:21:21.979 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:21:21.979 INFO [stderr]    --> src/main.rs:194:9
Dec 19 08:21:21.979 INFO [stderr]     |
Dec 19 08:21:21.979 INFO [stderr] 194 |         fs::remove_file(&poc2_plot_file);
Dec 19 08:21:21.979 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:21:21.979 INFO [stderr]     |
Dec 19 08:21:21.979 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:21:21.979 INFO [stderr] 
Dec 19 08:21:22.004 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.29s
Dec 19 08:21:22.634 INFO running `"docker" "inspect" "35101d565c26b2c45075e34f4310cd8ad4ffb2ee6e29784bb9f62934124dc6d5"`
Dec 19 08:21:22.956 INFO running `"docker" "rm" "-f" "35101d565c26b2c45075e34f4310cd8ad4ffb2ee6e29784bb9f62934124dc6d5"`
Dec 19 08:21:23.277 INFO [stdout] 35101d565c26b2c45075e34f4310cd8ad4ffb2ee6e29784bb9f62934124dc6d5