Dec 04 08:51:00.568 INFO checking tercen/rustson against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 08:51:00.568 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 08:51:01.047 INFO [stdout] 4825e0eda767a1fc93383ed4f45aecf0d62a3108af328aab0c68e15838a45d43
Dec 04 08:51:01.050 INFO running `"docker" "start" "-a" "4825e0eda767a1fc93383ed4f45aecf0d62a3108af328aab0c68e15838a45d43"`
Dec 04 08:51:03.630 INFO [stderr] usermod: no changes
Dec 04 08:51:03.743 INFO [stderr]     Checking bytes v0.4.6
Dec 04 08:51:04.701 INFO [stderr]     Checking rustson v0.1.0 (/source)
Dec 04 08:51:04.999 INFO [stderr] warning: unused import: `std::fs::File`
Dec 04 08:51:04.999 INFO [stderr]    --> src/lib.rs:456:9
Dec 04 08:51:04.999 INFO [stderr]     |
Dec 04 08:51:04.999 INFO [stderr] 456 |     use std::fs::File;
Dec 04 08:51:05.000 INFO [stderr]     |         ^^^^^^^^^^^^^
Dec 04 08:51:05.000 INFO [stderr]     |
Dec 04 08:51:05.000 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 04 08:51:05.000 INFO [stderr] 
Dec 04 08:51:05.001 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 04 08:51:05.001 INFO [stderr]    --> src/lib.rs:457:9
Dec 04 08:51:05.001 INFO [stderr]     |
Dec 04 08:51:05.002 INFO [stderr] 457 |     use std::io::prelude::*;
Dec 04 08:51:05.002 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^
Dec 04 08:51:05.002 INFO [stderr] 
Dec 04 08:51:05.283 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 08:51:05.283 INFO [stderr]    --> src/lib.rs:133:17
Dec 04 08:51:05.283 INFO [stderr]     |
Dec 04 08:51:05.284 INFO [stderr] 133 |                 add_object(v, buf);
Dec 04 08:51:05.284 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^
Dec 04 08:51:05.284 INFO [stderr]     |
Dec 04 08:51:05.285 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 08:51:05.285 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 08:51:05.285 INFO [stderr] 
Dec 04 08:51:05.419 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 08:51:05.419 INFO [stderr]    --> src/lib.rs:133:17
Dec 04 08:51:05.420 INFO [stderr]     |
Dec 04 08:51:05.420 INFO [stderr] 133 |                 add_object(v, buf);
Dec 04 08:51:05.420 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^
Dec 04 08:51:05.420 INFO [stderr]     |
Dec 04 08:51:05.421 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 08:51:05.421 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 08:51:05.421 INFO [stderr] 
Dec 04 08:51:05.448 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
Dec 04 08:51:05.451 INFO [stderr] su: No module specific data is present
Dec 04 08:51:06.668 INFO running `"docker" "inspect" "4825e0eda767a1fc93383ed4f45aecf0d62a3108af328aab0c68e15838a45d43"`
Dec 04 08:51:07.055 INFO running `"docker" "rm" "-f" "4825e0eda767a1fc93383ed4f45aecf0d62a3108af328aab0c68e15838a45d43"`
Dec 04 08:51:07.446 INFO [stdout] 4825e0eda767a1fc93383ed4f45aecf0d62a3108af328aab0c68e15838a45d43