Oct 12 15:15:17.587 INFO checking ravendyg/rust-playground against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 15:15:17.589 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-0/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-0/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 15:15:17.883 INFO blam! 0352fcfb868e6d56cb6969b584c6951aa84dbd56afc692d8ffd86a1c4cde417c
Oct 12 15:15:17.890 INFO running `"docker" "start" "-a" "0352fcfb868e6d56cb6969b584c6951aa84dbd56afc692d8ffd86a1c4cde417c"`
Oct 12 15:15:19.488 INFO kablam! usermod: no changes
Oct 12 15:15:19.593 INFO kablam!     Checking rand v0.3.15
Oct 12 15:15:21.028 INFO kablam!     Checking guessing v0.1.0 (/source)
Oct 12 15:15:21.320 INFO kablam! warning: unused variable: `x`
Oct 12 15:15:21.320 INFO kablam!   --> src/main.rs:60:7
Oct 12 15:15:21.320 INFO kablam!    |
Oct 12 15:15:21.320 INFO kablam! 60 |   let x: Option<i32> = Option::Some(5);
Oct 12 15:15:21.320 INFO kablam!    |       ^ help: consider using `_x` instead
Oct 12 15:15:21.321 INFO kablam!    |
Oct 12 15:15:21.321 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 15:15:21.321 INFO kablam! 
Oct 12 15:15:21.321 INFO kablam! warning: unused variable: `q`
Oct 12 15:15:21.321 INFO kablam!   --> src/main.rs:62:7
Oct 12 15:15:21.321 INFO kablam!    |
Oct 12 15:15:21.321 INFO kablam! 62 |   let q: Option<f64> = Option::Some(5f64);
Oct 12 15:15:21.321 INFO kablam!    |       ^ help: consider using `_q` instead
Oct 12 15:15:21.321 INFO kablam! 
Oct 12 15:15:21.321 INFO kablam! warning: unused variable: `b`
Oct 12 15:15:21.321 INFO kablam!   --> src/main.rs:71:7
Oct 12 15:15:21.321 INFO kablam!    |
Oct 12 15:15:21.321 INFO kablam! 71 |   let b = 10;
Oct 12 15:15:21.321 INFO kablam!    |       ^ help: consider using `_b` instead
Oct 12 15:15:21.321 INFO kablam! 
Oct 12 15:15:21.326 INFO kablam! warning: variant is never constructed: `None`
Oct 12 15:15:21.326 INFO kablam!   --> src/main.rs:49:3
Oct 12 15:15:21.326 INFO kablam!    |
Oct 12 15:15:21.326 INFO kablam! 49 |   None
Oct 12 15:15:21.326 INFO kablam!    |   ^^^^
Oct 12 15:15:21.326 INFO kablam!    |
Oct 12 15:15:21.326 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 12 15:15:21.326 INFO kablam! 
Oct 12 15:15:21.326 INFO kablam! warning: enum is never used: `Result`
Oct 12 15:15:21.326 INFO kablam!   --> src/main.rs:53:1
Oct 12 15:15:21.326 INFO kablam!    |
Oct 12 15:15:21.326 INFO kablam! 53 | enum Result<T, E> {
Oct 12 15:15:21.326 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 12 15:15:21.326 INFO kablam! 
Oct 12 15:15:21.344 INFO kablam! warning: unused variable: `x`
Oct 12 15:15:21.344 INFO kablam!   --> src/main.rs:60:7
Oct 12 15:15:21.344 INFO kablam!    |
Oct 12 15:15:21.344 INFO kablam! 60 |   let x: Option<i32> = Option::Some(5);
Oct 12 15:15:21.344 INFO kablam!    |       ^ help: consider using `_x` instead
Oct 12 15:15:21.344 INFO kablam!    |
Oct 12 15:15:21.344 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 15:15:21.344 INFO kablam! 
Oct 12 15:15:21.344 INFO kablam! warning: unused variable: `q`
Oct 12 15:15:21.344 INFO kablam!   --> src/main.rs:62:7
Oct 12 15:15:21.344 INFO kablam!    |
Oct 12 15:15:21.344 INFO kablam! 62 |   let q: Option<f64> = Option::Some(5f64);
Oct 12 15:15:21.344 INFO kablam!    |       ^ help: consider using `_q` instead
Oct 12 15:15:21.344 INFO kablam! 
Oct 12 15:15:21.345 INFO kablam! warning: unused variable: `b`
Oct 12 15:15:21.345 INFO kablam!   --> src/main.rs:71:7
Oct 12 15:15:21.345 INFO kablam!    |
Oct 12 15:15:21.345 INFO kablam! 71 |   let b = 10;
Oct 12 15:15:21.345 INFO kablam!    |       ^ help: consider using `_b` instead
Oct 12 15:15:21.345 INFO kablam! 
Oct 12 15:15:21.350 INFO kablam! warning: variant is never constructed: `None`
Oct 12 15:15:21.350 INFO kablam!   --> src/main.rs:49:3
Oct 12 15:15:21.350 INFO kablam!    |
Oct 12 15:15:21.350 INFO kablam! 49 |   None
Oct 12 15:15:21.350 INFO kablam!    |   ^^^^
Oct 12 15:15:21.350 INFO kablam!    |
Oct 12 15:15:21.350 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 12 15:15:21.350 INFO kablam! 
Oct 12 15:15:21.350 INFO kablam! warning: enum is never used: `Result`
Oct 12 15:15:21.350 INFO kablam!   --> src/main.rs:53:1
Oct 12 15:15:21.350 INFO kablam!    |
Oct 12 15:15:21.350 INFO kablam! 53 | enum Result<T, E> {
Oct 12 15:15:21.350 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 12 15:15:21.350 INFO kablam! 
Oct 12 15:15:21.364 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
Oct 12 15:15:21.366 INFO kablam! su: No module specific data is present
Oct 12 15:15:21.600 INFO running `"docker" "rm" "-f" "0352fcfb868e6d56cb6969b584c6951aa84dbd56afc692d8ffd86a1c4cde417c"`
Oct 12 15:15:21.667 INFO blam! 0352fcfb868e6d56cb6969b584c6951aa84dbd56afc692d8ffd86a1c4cde417c