Dec 05 08:51:28.634 INFO checking promises-0.2.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 08:51:28.634 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 05 08:51:28.959 INFO [stdout] 26427431aeb346a17539f9e9492a5ec0e5204c0ef9839728ca0fc769cdc2592e
Dec 05 08:51:28.964 INFO running `"docker" "start" "-a" "26427431aeb346a17539f9e9492a5ec0e5204c0ef9839728ca0fc769cdc2592e"`
Dec 05 08:51:29.606 INFO [stderr] usermod: no changes
Dec 05 08:51:29.663 INFO [stderr]     Checking promises v0.2.0 (/source)
Dec 05 08:51:30.585 INFO [stderr] warning: unused import: `std::fs`
Dec 05 08:51:30.586 INFO [stderr]  --> src/tests.rs:4:5
Dec 05 08:51:30.586 INFO [stderr]   |
Dec 05 08:51:30.586 INFO [stderr] 4 | use std::fs;
Dec 05 08:51:30.586 INFO [stderr]   |     ^^^^^^^
Dec 05 08:51:30.586 INFO [stderr]   |
Dec 05 08:51:30.586 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 08:51:30.586 INFO [stderr] 
Dec 05 08:51:30.603 INFO [stderr] warning: unused variable: `file`
Dec 05 08:51:30.603 INFO [stderr]   --> src/tests.rs:23:12
Dec 05 08:51:30.603 INFO [stderr]    |
Dec 05 08:51:30.603 INFO [stderr] 23 |         Ok(file) => println!("Created a file!"),
Dec 05 08:51:30.603 INFO [stderr]    |            ^^^^ help: consider using `_file` instead
Dec 05 08:51:30.603 INFO [stderr]    |
Dec 05 08:51:30.603 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 08:51:30.603 INFO [stderr] 
Dec 05 08:51:30.603 INFO [stderr] warning: unused variable: `p`
Dec 05 08:51:30.603 INFO [stderr]   --> src/tests.rs:31:9
Dec 05 08:51:30.603 INFO [stderr]    |
Dec 05 08:51:30.603 INFO [stderr] 31 |     let p: Promise<(), ()> = Promise::new(|| {
Dec 05 08:51:30.603 INFO [stderr]    |         ^ help: consider using `_p` instead
Dec 05 08:51:30.603 INFO [stderr] 
Dec 05 08:51:30.624 INFO [stderr] warning: function is never used: `create_file`
Dec 05 08:51:30.624 INFO [stderr]   --> src/tests.rs:13:1
Dec 05 08:51:30.624 INFO [stderr]    |
Dec 05 08:51:30.624 INFO [stderr] 13 | fn create_file() -> Result<File, io::Error> {
Dec 05 08:51:30.624 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:51:30.624 INFO [stderr]    |
Dec 05 08:51:30.624 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 08:51:30.624 INFO [stderr] 
Dec 05 08:51:30.647 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
Dec 05 08:51:30.647 INFO [stderr] su: No module specific data is present
Dec 05 08:51:31.171 INFO running `"docker" "inspect" "26427431aeb346a17539f9e9492a5ec0e5204c0ef9839728ca0fc769cdc2592e"`
Dec 05 08:51:31.259 INFO running `"docker" "rm" "-f" "26427431aeb346a17539f9e9492a5ec0e5204c0ef9839728ca0fc769cdc2592e"`
Dec 05 08:51:31.407 INFO [stdout] 26427431aeb346a17539f9e9492a5ec0e5204c0ef9839728ca0fc769cdc2592e