Dec 19 19:23:33.631 INFO checking bvtsang/random_curiosity_encoder against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 19:23:33.631 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/bvtsang/random_curiosity_encoder:/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 19:23:34.253 INFO [stdout] 6af7e4698fcd08a3315a7feb0cdd5d409ec101514dff533b46ec401060e576e7
Dec 19 19:23:34.255 INFO running `"docker" "start" "-a" "6af7e4698fcd08a3315a7feb0cdd5d409ec101514dff533b46ec401060e576e7"`
Dec 19 19:23:37.032 INFO [stderr]    Compiling cairo-rs v0.1.1
Dec 19 19:23:37.032 INFO [stderr]    Compiling gdk-pixbuf v0.1.1
Dec 19 19:23:37.032 INFO [stderr]    Compiling gio v0.1.1
Dec 19 19:23:37.044 INFO [stderr]     Checking c_vec v1.0.12
Dec 19 19:23:37.044 INFO [stderr]    Compiling gdk v0.5.1
Dec 19 19:23:37.044 INFO [stderr]    Compiling gtk v0.1.1
Dec 19 19:23:37.044 INFO [stderr]    Compiling glib-sys v0.3.2
Dec 19 19:23:37.044 INFO [stderr]    Compiling gobject-sys v0.3.2
Dec 19 19:23:39.365 INFO [stderr]    Compiling gio-sys v0.3.2
Dec 19 19:23:39.466 INFO [stderr]    Compiling gdk-pixbuf-sys v0.3.2
Dec 19 19:23:39.537 INFO [stderr]    Compiling cairo-sys-rs v0.3.2
Dec 19 19:23:39.560 INFO [stderr]    Compiling pango-sys v0.3.2
Dec 19 19:23:39.725 INFO [stderr]    Compiling gdk-sys v0.3.2
Dec 19 19:23:39.930 INFO [stderr]    Compiling atk-sys v0.3.2
Dec 19 19:23:40.534 INFO [stderr]    Compiling gtk-sys v0.3.2
Dec 19 19:23:47.407 INFO [stderr]     Checking glib v0.1.1
Dec 19 19:23:50.904 INFO [stderr]     Checking pango v0.1.1
Dec 19 19:24:16.310 INFO [stderr]     Checking random_curiosity_encoder v0.1.0 (/opt/crater/workdir)
Dec 19 19:24:17.612 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:24:17.612 INFO [stderr]    --> src/main.rs:157:17
Dec 19 19:24:17.613 INFO [stderr]     |
Dec 19 19:24:17.613 INFO [stderr] 157 |                 std::fs::remove_file(file);
Dec 19 19:24:17.613 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:24:17.613 INFO [stderr]     |
Dec 19 19:24:17.613 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 19:24:17.613 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:24:17.613 INFO [stderr] 
Dec 19 19:24:17.701 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:24:17.701 INFO [stderr]    --> src/main.rs:157:17
Dec 19 19:24:17.701 INFO [stderr]     |
Dec 19 19:24:17.701 INFO [stderr] 157 |                 std::fs::remove_file(file);
Dec 19 19:24:17.701 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:24:17.701 INFO [stderr]     |
Dec 19 19:24:17.701 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 19:24:17.701 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:24:17.701 INFO [stderr] 
Dec 19 19:24:17.768 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.85s
Dec 19 19:24:18.816 INFO running `"docker" "inspect" "6af7e4698fcd08a3315a7feb0cdd5d409ec101514dff533b46ec401060e576e7"`
Dec 19 19:24:19.118 INFO running `"docker" "rm" "-f" "6af7e4698fcd08a3315a7feb0cdd5d409ec101514dff533b46ec401060e576e7"`
Dec 19 19:24:19.460 INFO [stdout] 6af7e4698fcd08a3315a7feb0cdd5d409ec101514dff533b46ec401060e576e7