Dec 19 20:06:22.927 INFO checking b-m-f/rust_playground against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 20:06:22.927 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/b-m-f/rust_playground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:06:23.390 INFO [stdout] fbb34549edf9d37677e9fb6c30ff57bce1af2b2ffa8b9f99dc237ca1ada74d45
Dec 19 20:06:23.392 INFO running `"docker" "start" "-a" "fbb34549edf9d37677e9fb6c30ff57bce1af2b2ffa8b9f99dc237ca1ada74d45"`
Dec 19 20:06:25.294 INFO [stderr]     Checking fs_examples v0.1.0 (/opt/crater/workdir)
Dec 19 20:06:25.773 INFO [stderr] warning: function is never used: `factorial_recursive`
Dec 19 20:06:25.773 INFO [stderr]  --> src/math.rs:1:1
Dec 19 20:06:25.773 INFO [stderr]   |
Dec 19 20:06:25.773 INFO [stderr] 1 | pub fn factorial_recursive(n: i64) -> i64 {
Dec 19 20:06:25.773 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:06:25.773 INFO [stderr]   |
Dec 19 20:06:25.773 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 20:06:25.773 INFO [stderr] 
Dec 19 20:06:25.773 INFO [stderr] warning: function is never used: `factorial`
Dec 19 20:06:25.773 INFO [stderr]  --> src/math.rs:6:1
Dec 19 20:06:25.773 INFO [stderr]   |
Dec 19 20:06:25.773 INFO [stderr] 6 | pub fn factorial (n: i64) -> i64 {
Dec 19 20:06:25.773 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:06:25.773 INFO [stderr] 
Dec 19 20:06:25.778 INFO [stderr] warning: function is never used: `factorial_recursive`
Dec 19 20:06:25.778 INFO [stderr]  --> src/math.rs:1:1
Dec 19 20:06:25.778 INFO [stderr]   |
Dec 19 20:06:25.778 INFO [stderr] 1 | pub fn factorial_recursive(n: i64) -> i64 {
Dec 19 20:06:25.778 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:06:25.778 INFO [stderr]   |
Dec 19 20:06:25.778 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 20:06:25.778 INFO [stderr] 
Dec 19 20:06:25.778 INFO [stderr] warning: function is never used: `factorial`
Dec 19 20:06:25.778 INFO [stderr]  --> src/math.rs:6:1
Dec 19 20:06:25.778 INFO [stderr]   |
Dec 19 20:06:25.778 INFO [stderr] 6 | pub fn factorial (n: i64) -> i64 {
Dec 19 20:06:25.778 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:06:25.778 INFO [stderr] 
Dec 19 20:06:25.806 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Dec 19 20:06:26.791 INFO running `"docker" "inspect" "fbb34549edf9d37677e9fb6c30ff57bce1af2b2ffa8b9f99dc237ca1ada74d45"`
Dec 19 20:06:27.064 INFO running `"docker" "rm" "-f" "fbb34549edf9d37677e9fb6c30ff57bce1af2b2ffa8b9f99dc237ca1ada74d45"`
Dec 19 20:06:27.352 INFO [stdout] fbb34549edf9d37677e9fb6c30ff57bce1af2b2ffa8b9f99dc237ca1ada74d45