Dec 19 19:23:35.495 INFO checking bvtsang/random_curiosity_encoder against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:23:35.495 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:23:36.026 INFO [stdout] 18490d5106175a5809c62e1c882e4396ee9ac9c62b7c286fa34a7f1663d7a88b
Dec 19 19:23:36.028 INFO running `"docker" "start" "-a" "18490d5106175a5809c62e1c882e4396ee9ac9c62b7c286fa34a7f1663d7a88b"`
Dec 19 19:23:38.940 INFO [stderr]    Compiling cairo-rs v0.1.1
Dec 19 19:23:38.940 INFO [stderr]    Compiling gio v0.1.1
Dec 19 19:23:38.940 INFO [stderr]    Compiling gdk-pixbuf v0.1.1
Dec 19 19:23:38.980 INFO [stderr]    Compiling gdk v0.5.1
Dec 19 19:23:38.980 INFO [stderr]    Compiling gtk v0.1.1
Dec 19 19:23:38.980 INFO [stderr]    Compiling glib-sys v0.3.2
Dec 19 19:23:38.980 INFO [stderr]    Compiling gobject-sys v0.3.2
Dec 19 19:23:38.981 INFO [stderr]    Compiling gio-sys v0.3.2
Dec 19 19:23:41.741 INFO [stderr]    Compiling pango-sys v0.3.2
Dec 19 19:23:41.776 INFO [stderr]    Compiling cairo-sys-rs v0.3.2
Dec 19 19:23:41.779 INFO [stderr]    Compiling gdk-pixbuf-sys v0.3.2
Dec 19 19:23:41.793 INFO [stderr]    Compiling gdk-sys v0.3.2
Dec 19 19:23:41.793 INFO [stderr]    Compiling atk-sys v0.3.2
Dec 19 19:23:43.460 INFO [stderr]    Compiling gtk-sys v0.3.2
Dec 19 19:23:49.240 INFO [stderr]     Checking glib v0.1.1
Dec 19 19:23:51.728 INFO [stderr]     Checking pango v0.1.1
Dec 19 19:24:17.009 INFO [stderr]     Checking random_curiosity_encoder v0.1.0 (/opt/crater/workdir)
Dec 19 19:24:17.672 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:24:17.672 INFO [stderr]    --> src/main.rs:157:17
Dec 19 19:24:17.672 INFO [stderr]     |
Dec 19 19:24:17.672 INFO [stderr] 157 |                 std::fs::remove_file(file);
Dec 19 19:24:17.672 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:24:17.672 INFO [stderr]     |
Dec 19 19:24:17.672 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 19:24:17.672 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:24:17.672 INFO [stderr] 
Dec 19 19:24:18.128 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:24:18.129 INFO [stderr]    --> src/main.rs:157:17
Dec 19 19:24:18.129 INFO [stderr]     |
Dec 19 19:24:18.129 INFO [stderr] 157 |                 std::fs::remove_file(file);
Dec 19 19:24:18.129 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:24:18.129 INFO [stderr]     |
Dec 19 19:24:18.129 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 19:24:18.129 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:24:18.129 INFO [stderr] 
Dec 19 19:24:18.181 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.36s
Dec 19 19:24:18.870 INFO running `"docker" "inspect" "18490d5106175a5809c62e1c882e4396ee9ac9c62b7c286fa34a7f1663d7a88b"`
Dec 19 19:24:19.229 INFO running `"docker" "rm" "-f" "18490d5106175a5809c62e1c882e4396ee9ac9c62b7c286fa34a7f1663d7a88b"`
Dec 19 19:24:19.664 INFO [stdout] 18490d5106175a5809c62e1c882e4396ee9ac9c62b7c286fa34a7f1663d7a88b