Dec 11 08:04:07.613 INFO checking tercen/rustson against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 08:04:07.613 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 08:04:08.028 INFO [stdout] 0ac8c1e77b0915fa23f92f78502dfc41f4d9536b760d56ec3374df8ce12632aa
Dec 11 08:04:08.030 INFO running `"docker" "start" "-a" "0ac8c1e77b0915fa23f92f78502dfc41f4d9536b760d56ec3374df8ce12632aa"`
Dec 11 08:04:09.311 INFO [stderr] usermod: no changes
Dec 11 08:04:09.388 INFO [stderr]     Checking rustson v0.1.0 (/source)
Dec 11 08:04:09.808 INFO [stderr] warning: unused import: `std::fs::File`
Dec 11 08:04:09.808 INFO [stderr]    --> src/lib.rs:456:9
Dec 11 08:04:09.808 INFO [stderr]     |
Dec 11 08:04:09.808 INFO [stderr] 456 |     use std::fs::File;
Dec 11 08:04:09.808 INFO [stderr]     |         ^^^^^^^^^^^^^
Dec 11 08:04:09.808 INFO [stderr]     |
Dec 11 08:04:09.808 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 11 08:04:09.808 INFO [stderr] 
Dec 11 08:04:09.808 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 11 08:04:09.808 INFO [stderr]    --> src/lib.rs:457:9
Dec 11 08:04:09.808 INFO [stderr]     |
Dec 11 08:04:09.808 INFO [stderr] 457 |     use std::io::prelude::*;
Dec 11 08:04:09.808 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^
Dec 11 08:04:09.808 INFO [stderr] 
Dec 11 08:04:10.115 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:04:10.115 INFO [stderr]    --> src/lib.rs:133:17
Dec 11 08:04:10.115 INFO [stderr]     |
Dec 11 08:04:10.115 INFO [stderr] 133 |                 add_object(v, buf);
Dec 11 08:04:10.115 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^
Dec 11 08:04:10.115 INFO [stderr]     |
Dec 11 08:04:10.115 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 08:04:10.115 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:04:10.115 INFO [stderr] 
Dec 11 08:04:10.232 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:04:10.232 INFO [stderr]    --> src/lib.rs:133:17
Dec 11 08:04:10.232 INFO [stderr]     |
Dec 11 08:04:10.232 INFO [stderr] 133 |                 add_object(v, buf);
Dec 11 08:04:10.232 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^
Dec 11 08:04:10.232 INFO [stderr]     |
Dec 11 08:04:10.232 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 08:04:10.232 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:04:10.232 INFO [stderr] 
Dec 11 08:04:10.272 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
Dec 11 08:04:10.276 INFO [stderr] su: No module specific data is present
Dec 11 08:04:10.871 INFO running `"docker" "inspect" "0ac8c1e77b0915fa23f92f78502dfc41f4d9536b760d56ec3374df8ce12632aa"`
Dec 11 08:04:11.170 INFO running `"docker" "rm" "-f" "0ac8c1e77b0915fa23f92f78502dfc41f4d9536b760d56ec3374df8ce12632aa"`
Dec 11 08:04:11.452 INFO [stdout] 0ac8c1e77b0915fa23f92f78502dfc41f4d9536b760d56ec3374df8ce12632aa