Dec 11 11:17:19.833 INFO checking ravendyg/rust-playground against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 11:17:19.833 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 11:17:20.176 INFO [stdout] 14a4fefb1791104cc7ccaa80e5b021554522e80b66fc8e54e79343335cfd0078
Dec 11 11:17:20.178 INFO running `"docker" "start" "-a" "14a4fefb1791104cc7ccaa80e5b021554522e80b66fc8e54e79343335cfd0078"`
Dec 11 11:17:21.194 INFO [stderr] usermod: no changes
Dec 11 11:17:21.281 INFO [stderr]     Checking rand v0.3.15
Dec 11 11:17:22.536 INFO [stderr]     Checking guessing v0.1.0 (/source)
Dec 11 11:17:22.904 INFO [stderr] warning: unused variable: `x`
Dec 11 11:17:22.904 INFO [stderr]   --> src/main.rs:60:7
Dec 11 11:17:22.904 INFO [stderr]    |
Dec 11 11:17:22.904 INFO [stderr] 60 |   let x: Option<i32> = Option::Some(5);
Dec 11 11:17:22.904 INFO [stderr]    |       ^ help: consider using `_x` instead
Dec 11 11:17:22.904 INFO [stderr]    |
Dec 11 11:17:22.904 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 11:17:22.904 INFO [stderr] 
Dec 11 11:17:22.904 INFO [stderr] warning: unused variable: `q`
Dec 11 11:17:22.904 INFO [stderr]   --> src/main.rs:62:7
Dec 11 11:17:22.904 INFO [stderr]    |
Dec 11 11:17:22.904 INFO [stderr] 62 |   let q: Option<f64> = Option::Some(5f64);
Dec 11 11:17:22.904 INFO [stderr]    |       ^ help: consider using `_q` instead
Dec 11 11:17:22.904 INFO [stderr] 
Dec 11 11:17:22.904 INFO [stderr] warning: unused variable: `b`
Dec 11 11:17:22.904 INFO [stderr]   --> src/main.rs:71:7
Dec 11 11:17:22.904 INFO [stderr]    |
Dec 11 11:17:22.904 INFO [stderr] 71 |   let b = 10;
Dec 11 11:17:22.904 INFO [stderr]    |       ^ help: consider using `_b` instead
Dec 11 11:17:22.904 INFO [stderr] 
Dec 11 11:17:22.905 INFO [stderr] warning: variant is never constructed: `None`
Dec 11 11:17:22.905 INFO [stderr]   --> src/main.rs:49:3
Dec 11 11:17:22.905 INFO [stderr]    |
Dec 11 11:17:22.905 INFO [stderr] 49 |   None
Dec 11 11:17:22.905 INFO [stderr]    |   ^^^^
Dec 11 11:17:22.905 INFO [stderr]    |
Dec 11 11:17:22.905 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 11:17:22.905 INFO [stderr] 
Dec 11 11:17:22.905 INFO [stderr] warning: enum is never used: `Result`
Dec 11 11:17:22.905 INFO [stderr]   --> src/main.rs:53:1
Dec 11 11:17:22.905 INFO [stderr]    |
Dec 11 11:17:22.905 INFO [stderr] 53 | enum Result<T, E> {
Dec 11 11:17:22.905 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 11 11:17:22.905 INFO [stderr] 
Dec 11 11:17:22.948 INFO [stderr] warning: unused variable: `x`
Dec 11 11:17:22.948 INFO [stderr]   --> src/main.rs:60:7
Dec 11 11:17:22.948 INFO [stderr]    |
Dec 11 11:17:22.948 INFO [stderr] 60 |   let x: Option<i32> = Option::Some(5);
Dec 11 11:17:22.948 INFO [stderr]    |       ^ help: consider using `_x` instead
Dec 11 11:17:22.948 INFO [stderr]    |
Dec 11 11:17:22.948 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 11:17:22.948 INFO [stderr] 
Dec 11 11:17:22.948 INFO [stderr] warning: unused variable: `q`
Dec 11 11:17:22.948 INFO [stderr]   --> src/main.rs:62:7
Dec 11 11:17:22.948 INFO [stderr]    |
Dec 11 11:17:22.948 INFO [stderr] 62 |   let q: Option<f64> = Option::Some(5f64);
Dec 11 11:17:22.948 INFO [stderr]    |       ^ help: consider using `_q` instead
Dec 11 11:17:22.948 INFO [stderr] 
Dec 11 11:17:22.948 INFO [stderr] warning: unused variable: `b`
Dec 11 11:17:22.948 INFO [stderr]   --> src/main.rs:71:7
Dec 11 11:17:22.948 INFO [stderr]    |
Dec 11 11:17:22.948 INFO [stderr] 71 |   let b = 10;
Dec 11 11:17:22.948 INFO [stderr]    |       ^ help: consider using `_b` instead
Dec 11 11:17:22.948 INFO [stderr] 
Dec 11 11:17:22.954 INFO [stderr] warning: variant is never constructed: `None`
Dec 11 11:17:22.954 INFO [stderr]   --> src/main.rs:49:3
Dec 11 11:17:22.954 INFO [stderr]    |
Dec 11 11:17:22.954 INFO [stderr] 49 |   None
Dec 11 11:17:22.954 INFO [stderr]    |   ^^^^
Dec 11 11:17:22.955 INFO [stderr]    |
Dec 11 11:17:22.955 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 11:17:22.955 INFO [stderr] 
Dec 11 11:17:22.955 INFO [stderr] warning: enum is never used: `Result`
Dec 11 11:17:22.955 INFO [stderr]   --> src/main.rs:53:1
Dec 11 11:17:22.955 INFO [stderr]    |
Dec 11 11:17:22.955 INFO [stderr] 53 | enum Result<T, E> {
Dec 11 11:17:22.955 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 11 11:17:22.955 INFO [stderr] 
Dec 11 11:17:22.966 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
Dec 11 11:17:22.969 INFO [stderr] su: No module specific data is present
Dec 11 11:17:23.616 INFO running `"docker" "inspect" "14a4fefb1791104cc7ccaa80e5b021554522e80b66fc8e54e79343335cfd0078"`
Dec 11 11:17:23.836 INFO running `"docker" "rm" "-f" "14a4fefb1791104cc7ccaa80e5b021554522e80b66fc8e54e79343335cfd0078"`
Dec 11 11:17:24.152 INFO [stdout] 14a4fefb1791104cc7ccaa80e5b021554522e80b66fc8e54e79343335cfd0078