Dec 19 07:24:17.145 INFO checking tercen/rustson against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 07:24:17.145 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/tercen/rustson:/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 07:24:17.744 INFO [stdout] e843e6befb6a6852127f5f4063de52dbd5260790be3275754259e945df6e106c
Dec 19 07:24:17.746 INFO running `"docker" "start" "-a" "e843e6befb6a6852127f5f4063de52dbd5260790be3275754259e945df6e106c"`
Dec 19 07:24:19.720 INFO [stderr]     Checking rustson v0.1.0 (/opt/crater/workdir)
Dec 19 07:24:19.940 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 07:24:19.940 INFO [stderr]    --> src/lib.rs:456:9
Dec 19 07:24:19.940 INFO [stderr]     |
Dec 19 07:24:19.940 INFO [stderr] 456 |     use std::fs::File;
Dec 19 07:24:19.940 INFO [stderr]     |         ^^^^^^^^^^^^^
Dec 19 07:24:19.940 INFO [stderr]     |
Dec 19 07:24:19.940 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 19 07:24:19.940 INFO [stderr] 
Dec 19 07:24:19.940 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 07:24:19.940 INFO [stderr]    --> src/lib.rs:457:9
Dec 19 07:24:19.940 INFO [stderr]     |
Dec 19 07:24:19.940 INFO [stderr] 457 |     use std::io::prelude::*;
Dec 19 07:24:19.940 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:19.940 INFO [stderr] 
Dec 19 07:24:20.480 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:24:20.480 INFO [stderr]    --> src/lib.rs:133:17
Dec 19 07:24:20.480 INFO [stderr]     |
Dec 19 07:24:20.480 INFO [stderr] 133 |                 add_object(v, buf);
Dec 19 07:24:20.481 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:20.481 INFO [stderr]     |
Dec 19 07:24:20.481 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 07:24:20.482 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:24:20.482 INFO [stderr] 
Dec 19 07:24:20.534 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:24:20.535 INFO [stderr]    --> src/lib.rs:133:17
Dec 19 07:24:20.535 INFO [stderr]     |
Dec 19 07:24:20.535 INFO [stderr] 133 |                 add_object(v, buf);
Dec 19 07:24:20.536 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:20.536 INFO [stderr]     |
Dec 19 07:24:20.536 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 07:24:20.536 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:24:20.537 INFO [stderr] 
Dec 19 07:24:20.580 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
Dec 19 07:24:21.850 INFO running `"docker" "inspect" "e843e6befb6a6852127f5f4063de52dbd5260790be3275754259e945df6e106c"`
Dec 19 07:24:22.240 INFO running `"docker" "rm" "-f" "e843e6befb6a6852127f5f4063de52dbd5260790be3275754259e945df6e106c"`
Dec 19 07:24:22.580 INFO [stdout] e843e6befb6a6852127f5f4063de52dbd5260790be3275754259e945df6e106c