Nov 27 22:14:25.227 INFO checking ravendyg/rust-playground against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 27 22:14:25.228 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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"`
Nov 27 22:14:25.530 INFO [stdout] 8bc07fdbf684393e6aeb884f931e1bbffec157a3e67a6ba7a8d17c00d7b9f8d3
Nov 27 22:14:25.533 INFO running `"docker" "start" "-a" "8bc07fdbf684393e6aeb884f931e1bbffec157a3e67a6ba7a8d17c00d7b9f8d3"`
Nov 27 22:14:26.135 INFO [stderr] usermod: no changes
Nov 27 22:14:26.165 INFO [stderr]     Checking guessing v0.1.0 (/source)
Nov 27 22:14:26.311 INFO [stderr] warning: unused variable: `x`
Nov 27 22:14:26.311 INFO [stderr]   --> src/main.rs:60:7
Nov 27 22:14:26.311 INFO [stderr]    |
Nov 27 22:14:26.311 INFO [stderr] 60 |   let x: Option<i32> = Option::Some(5);
Nov 27 22:14:26.311 INFO [stderr]    |       ^ help: consider using `_x` instead
Nov 27 22:14:26.311 INFO [stderr]    |
Nov 27 22:14:26.311 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 27 22:14:26.311 INFO [stderr] 
Nov 27 22:14:26.311 INFO [stderr] warning: unused variable: `q`
Nov 27 22:14:26.312 INFO [stderr]   --> src/main.rs:62:7
Nov 27 22:14:26.312 INFO [stderr]    |
Nov 27 22:14:26.312 INFO [stderr] 62 |   let q: Option<f64> = Option::Some(5f64);
Nov 27 22:14:26.312 INFO [stderr]    |       ^ help: consider using `_q` instead
Nov 27 22:14:26.312 INFO [stderr] 
Nov 27 22:14:26.312 INFO [stderr] warning: unused variable: `b`
Nov 27 22:14:26.312 INFO [stderr]   --> src/main.rs:71:7
Nov 27 22:14:26.312 INFO [stderr]    |
Nov 27 22:14:26.312 INFO [stderr] 71 |   let b = 10;
Nov 27 22:14:26.312 INFO [stderr]    |       ^ help: consider using `_b` instead
Nov 27 22:14:26.312 INFO [stderr] 
Nov 27 22:14:26.315 INFO [stderr] warning: variant is never constructed: `None`
Nov 27 22:14:26.315 INFO [stderr]   --> src/main.rs:49:3
Nov 27 22:14:26.315 INFO [stderr]    |
Nov 27 22:14:26.315 INFO [stderr] 49 |   None
Nov 27 22:14:26.315 INFO [stderr]    |   ^^^^
Nov 27 22:14:26.315 INFO [stderr]    |
Nov 27 22:14:26.315 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 27 22:14:26.315 INFO [stderr] 
Nov 27 22:14:26.315 INFO [stderr] warning: enum is never used: `Result`
Nov 27 22:14:26.315 INFO [stderr]   --> src/main.rs:53:1
Nov 27 22:14:26.315 INFO [stderr]    |
Nov 27 22:14:26.315 INFO [stderr] 53 | enum Result<T, E> {
Nov 27 22:14:26.315 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Nov 27 22:14:26.315 INFO [stderr] 
Nov 27 22:14:26.387 INFO [stderr] warning: unused variable: `x`
Nov 27 22:14:26.387 INFO [stderr]   --> src/main.rs:60:7
Nov 27 22:14:26.387 INFO [stderr]    |
Nov 27 22:14:26.387 INFO [stderr] 60 |   let x: Option<i32> = Option::Some(5);
Nov 27 22:14:26.387 INFO [stderr]    |       ^ help: consider using `_x` instead
Nov 27 22:14:26.387 INFO [stderr]    |
Nov 27 22:14:26.387 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 27 22:14:26.387 INFO [stderr] 
Nov 27 22:14:26.387 INFO [stderr] warning: unused variable: `q`
Nov 27 22:14:26.387 INFO [stderr]   --> src/main.rs:62:7
Nov 27 22:14:26.387 INFO [stderr]    |
Nov 27 22:14:26.387 INFO [stderr] 62 |   let q: Option<f64> = Option::Some(5f64);
Nov 27 22:14:26.387 INFO [stderr]    |       ^ help: consider using `_q` instead
Nov 27 22:14:26.387 INFO [stderr] 
Nov 27 22:14:26.387 INFO [stderr] warning: unused variable: `b`
Nov 27 22:14:26.387 INFO [stderr]   --> src/main.rs:71:7
Nov 27 22:14:26.387 INFO [stderr]    |
Nov 27 22:14:26.387 INFO [stderr] 71 |   let b = 10;
Nov 27 22:14:26.387 INFO [stderr]    |       ^ help: consider using `_b` instead
Nov 27 22:14:26.387 INFO [stderr] 
Nov 27 22:14:26.392 INFO [stderr] warning: variant is never constructed: `None`
Nov 27 22:14:26.392 INFO [stderr]   --> src/main.rs:49:3
Nov 27 22:14:26.392 INFO [stderr]    |
Nov 27 22:14:26.392 INFO [stderr] 49 |   None
Nov 27 22:14:26.392 INFO [stderr]    |   ^^^^
Nov 27 22:14:26.392 INFO [stderr]    |
Nov 27 22:14:26.392 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 27 22:14:26.392 INFO [stderr] 
Nov 27 22:14:26.392 INFO [stderr] warning: enum is never used: `Result`
Nov 27 22:14:26.392 INFO [stderr]   --> src/main.rs:53:1
Nov 27 22:14:26.392 INFO [stderr]    |
Nov 27 22:14:26.392 INFO [stderr] 53 | enum Result<T, E> {
Nov 27 22:14:26.392 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Nov 27 22:14:26.392 INFO [stderr] 
Nov 27 22:14:26.403 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
Nov 27 22:14:26.406 INFO [stderr] su: No module specific data is present
Nov 27 22:14:26.740 INFO running `"docker" "inspect" "8bc07fdbf684393e6aeb884f931e1bbffec157a3e67a6ba7a8d17c00d7b9f8d3"`
Nov 27 22:14:26.939 INFO running `"docker" "rm" "-f" "8bc07fdbf684393e6aeb884f931e1bbffec157a3e67a6ba7a8d17c00d7b9f8d3"`
Nov 27 22:14:27.222 INFO [stdout] 8bc07fdbf684393e6aeb884f931e1bbffec157a3e67a6ba7a8d17c00d7b9f8d3