Oct 12 15:15:17.745 INFO checking ravendyg/rust-playground against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 15:15:17.745 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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 15:15:18.124 INFO blam! 95b70bf547cbeca892133e4faa2faf236308d17be107951c8d0cc916a9e6794e
Oct 12 15:15:18.128 INFO running `"docker" "start" "-a" "95b70bf547cbeca892133e4faa2faf236308d17be107951c8d0cc916a9e6794e"`
Oct 12 15:15:19.625 INFO kablam! usermod: no changes
Oct 12 15:15:19.689 INFO kablam!     Checking guessing v0.1.0 (/source)
Oct 12 15:15:20.112 INFO kablam! warning: unused variable: `x`
Oct 12 15:15:20.112 INFO kablam!   --> src/main.rs:60:7
Oct 12 15:15:20.112 INFO kablam!    |
Oct 12 15:15:20.112 INFO kablam! 60 |   let x: Option<i32> = Option::Some(5);
Oct 12 15:15:20.112 INFO kablam!    |       ^ help: consider using `_x` instead
Oct 12 15:15:20.114 INFO kablam!    |
Oct 12 15:15:20.114 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 15:15:20.114 INFO kablam! 
Oct 12 15:15:20.114 INFO kablam! warning: unused variable: `q`
Oct 12 15:15:20.114 INFO kablam!   --> src/main.rs:62:7
Oct 12 15:15:20.114 INFO kablam!    |
Oct 12 15:15:20.114 INFO kablam! 62 |   let q: Option<f64> = Option::Some(5f64);
Oct 12 15:15:20.114 INFO kablam!    |       ^ help: consider using `_q` instead
Oct 12 15:15:20.114 INFO kablam! 
Oct 12 15:15:20.114 INFO kablam! warning: unused variable: `b`
Oct 12 15:15:20.114 INFO kablam!   --> src/main.rs:71:7
Oct 12 15:15:20.114 INFO kablam!    |
Oct 12 15:15:20.114 INFO kablam! 71 |   let b = 10;
Oct 12 15:15:20.114 INFO kablam!    |       ^ help: consider using `_b` instead
Oct 12 15:15:20.114 INFO kablam! 
Oct 12 15:15:20.118 INFO kablam! warning: variant is never constructed: `None`
Oct 12 15:15:20.118 INFO kablam!   --> src/main.rs:49:3
Oct 12 15:15:20.118 INFO kablam!    |
Oct 12 15:15:20.118 INFO kablam! 49 |   None
Oct 12 15:15:20.118 INFO kablam!    |   ^^^^
Oct 12 15:15:20.124 INFO kablam!    |
Oct 12 15:15:20.125 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 12 15:15:20.125 INFO kablam! 
Oct 12 15:15:20.125 INFO kablam! warning: enum is never used: `Result`
Oct 12 15:15:20.125 INFO kablam!   --> src/main.rs:53:1
Oct 12 15:15:20.125 INFO kablam!    |
Oct 12 15:15:20.126 INFO kablam! 53 | enum Result<T, E> {
Oct 12 15:15:20.126 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 12 15:15:20.126 INFO kablam! 
Oct 12 15:15:20.188 INFO kablam! warning: unused variable: `x`
Oct 12 15:15:20.188 INFO kablam!   --> src/main.rs:60:7
Oct 12 15:15:20.192 INFO kablam!    |
Oct 12 15:15:20.192 INFO kablam! 60 |   let x: Option<i32> = Option::Some(5);
Oct 12 15:15:20.193 INFO kablam!    |       ^ help: consider using `_x` instead
Oct 12 15:15:20.193 INFO kablam!    |
Oct 12 15:15:20.193 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 15:15:20.193 INFO kablam! 
Oct 12 15:15:20.193 INFO kablam! warning: unused variable: `q`
Oct 12 15:15:20.193 INFO kablam!   --> src/main.rs:62:7
Oct 12 15:15:20.193 INFO kablam!    |
Oct 12 15:15:20.194 INFO kablam! 62 |   let q: Option<f64> = Option::Some(5f64);
Oct 12 15:15:20.194 INFO kablam!    |       ^ help: consider using `_q` instead
Oct 12 15:15:20.194 INFO kablam! 
Oct 12 15:15:20.194 INFO kablam! warning: unused variable: `b`
Oct 12 15:15:20.194 INFO kablam!   --> src/main.rs:71:7
Oct 12 15:15:20.194 INFO kablam!    |
Oct 12 15:15:20.194 INFO kablam! 71 |   let b = 10;
Oct 12 15:15:20.194 INFO kablam!    |       ^ help: consider using `_b` instead
Oct 12 15:15:20.194 INFO kablam! 
Oct 12 15:15:20.194 INFO kablam! warning: variant is never constructed: `None`
Oct 12 15:15:20.194 INFO kablam!   --> src/main.rs:49:3
Oct 12 15:15:20.194 INFO kablam!    |
Oct 12 15:15:20.194 INFO kablam! 49 |   None
Oct 12 15:15:20.194 INFO kablam!    |   ^^^^
Oct 12 15:15:20.194 INFO kablam!    |
Oct 12 15:15:20.195 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 12 15:15:20.195 INFO kablam! 
Oct 12 15:15:20.195 INFO kablam! warning: enum is never used: `Result`
Oct 12 15:15:20.195 INFO kablam!   --> src/main.rs:53:1
Oct 12 15:15:20.195 INFO kablam!    |
Oct 12 15:15:20.195 INFO kablam! 53 | enum Result<T, E> {
Oct 12 15:15:20.195 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 12 15:15:20.195 INFO kablam! 
Oct 12 15:15:20.216 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
Oct 12 15:15:20.219 INFO kablam! su: No module specific data is present
Oct 12 15:15:21.305 INFO running `"docker" "rm" "-f" "95b70bf547cbeca892133e4faa2faf236308d17be107951c8d0cc916a9e6794e"`
Oct 12 15:15:21.396 INFO blam! 95b70bf547cbeca892133e4faa2faf236308d17be107951c8d0cc916a9e6794e