Dec 04 17:52:51.728 INFO checking gyscos/varf against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 17:52:51.728 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 17:52:51.978 INFO [stdout] d9e9d5cfd726bb7ee2c523e23cb49bab14989e79d24f19924661886700158c2e
Dec 04 17:52:51.980 INFO running `"docker" "start" "-a" "d9e9d5cfd726bb7ee2c523e23cb49bab14989e79d24f19924661886700158c2e"`
Dec 04 17:52:52.959 INFO [stderr] usermod: no changes
Dec 04 17:52:53.219 INFO [stderr]     Checking xdg-basedir v1.0.0
Dec 04 17:52:53.222 INFO [stderr]     Checking handlebars v0.26.2
Dec 04 17:52:53.222 INFO [stderr]     Checking persistent v0.3.0
Dec 04 17:52:53.222 INFO [stderr]     Checking mount v0.3.0
Dec 04 17:52:55.799 INFO [stderr]     Checking staticfile v0.4.0
Dec 04 17:52:55.799 INFO [stderr]     Checking bodyparser v0.5.0
Dec 04 17:52:57.389 INFO [stderr]     Checking handlebars-iron v0.24.1
Dec 04 17:52:57.751 INFO [stderr]     Checking urlencoded v0.5.0
Dec 04 17:52:59.469 INFO [stderr]     Checking varf v0.1.2 (/source)
Dec 04 17:53:01.971 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 17:53:01.971 INFO [stderr]   --> src/visu.rs:71:5
Dec 04 17:53:01.971 INFO [stderr]    |
Dec 04 17:53:01.971 INFO [stderr] 71 | /     divs.iter()
Dec 04 17:53:01.971 INFO [stderr] 72 | |         .rev()
Dec 04 17:53:01.974 INFO [stderr] 73 | |         .map(|k| n / k)
Dec 04 17:53:01.974 INFO [stderr] 74 | |         .collect::<Vec<usize>>()
Dec 04 17:53:01.974 INFO [stderr] 75 | |         .iter()
Dec 04 17:53:01.974 INFO [stderr] 76 | |         .map(|k| divs.push(*k))
Dec 04 17:53:01.974 INFO [stderr] 77 | |         .collect::<Vec<()>>();
Dec 04 17:53:01.974 INFO [stderr]    | |______________________________^
Dec 04 17:53:01.974 INFO [stderr]    |
Dec 04 17:53:01.974 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 17:53:01.974 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 17:53:01.974 INFO [stderr] 
Dec 04 17:53:02.047 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 17:53:02.047 INFO [stderr]   --> src/visu.rs:71:5
Dec 04 17:53:02.047 INFO [stderr]    |
Dec 04 17:53:02.047 INFO [stderr] 71 | /     divs.iter()
Dec 04 17:53:02.047 INFO [stderr] 72 | |         .rev()
Dec 04 17:53:02.047 INFO [stderr] 73 | |         .map(|k| n / k)
Dec 04 17:53:02.047 INFO [stderr] 74 | |         .collect::<Vec<usize>>()
Dec 04 17:53:02.047 INFO [stderr] 75 | |         .iter()
Dec 04 17:53:02.047 INFO [stderr] 76 | |         .map(|k| divs.push(*k))
Dec 04 17:53:02.047 INFO [stderr] 77 | |         .collect::<Vec<()>>();
Dec 04 17:53:02.047 INFO [stderr]    | |______________________________^
Dec 04 17:53:02.047 INFO [stderr]    |
Dec 04 17:53:02.047 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 17:53:02.047 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 17:53:02.047 INFO [stderr] 
Dec 04 17:53:02.062 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.06s
Dec 04 17:53:02.071 INFO [stderr] su: No module specific data is present
Dec 04 17:53:02.384 INFO running `"docker" "inspect" "d9e9d5cfd726bb7ee2c523e23cb49bab14989e79d24f19924661886700158c2e"`
Dec 04 17:53:02.501 INFO running `"docker" "rm" "-f" "d9e9d5cfd726bb7ee2c523e23cb49bab14989e79d24f19924661886700158c2e"`
Dec 04 17:53:02.613 INFO [stdout] d9e9d5cfd726bb7ee2c523e23cb49bab14989e79d24f19924661886700158c2e