Dec 19 20:03:07.522 INFO checking banziha104/RustSample against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 20:03:07.522 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/banziha104/RustSample:/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 20:03:07.844 INFO [stdout] 8d2fc53dd7c9c370e48e63ca875145e74efc02af4adf9e6f2d697da8124397f4
Dec 19 20:03:07.846 INFO running `"docker" "start" "-a" "8d2fc53dd7c9c370e48e63ca875145e74efc02af4adf9e6f2d697da8124397f4"`
Dec 19 20:03:09.200 INFO [stderr]     Checking RustSample v0.1.0 (/opt/crater/workdir)
Dec 19 20:03:09.464 INFO [stderr] warning: unused import: `std::thread`
Dec 19 20:03:09.464 INFO [stderr]  --> src/main.rs:1:5
Dec 19 20:03:09.464 INFO [stderr]   |
Dec 19 20:03:09.464 INFO [stderr] 1 | use std::thread;
Dec 19 20:03:09.464 INFO [stderr]   |     ^^^^^^^^^^^
Dec 19 20:03:09.464 INFO [stderr]   |
Dec 19 20:03:09.464 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 20:03:09.464 INFO [stderr] 
Dec 19 20:03:09.510 INFO [stderr] warning: crate `RustSample` should have a snake case name such as `rust_sample`
Dec 19 20:03:09.510 INFO [stderr]   |
Dec 19 20:03:09.510 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 20:03:09.510 INFO [stderr] 
Dec 19 20:03:09.510 INFO [stderr] warning: function `returnFormat` should have a snake case name such as `return_format`
Dec 19 20:03:09.510 INFO [stderr]  --> src/main.rs:4:1
Dec 19 20:03:09.510 INFO [stderr]   |
Dec 19 20:03:09.510 INFO [stderr] 4 | / fn returnFormat(i : i32) -> String{
Dec 19 20:03:09.510 INFO [stderr] 5 | |     format!("{}",i)
Dec 19 20:03:09.510 INFO [stderr] 6 | | }
Dec 19 20:03:09.510 INFO [stderr]   | |_^
Dec 19 20:03:09.510 INFO [stderr] 
Dec 19 20:03:09.606 INFO [stderr] warning: unused import: `std::thread`
Dec 19 20:03:09.606 INFO [stderr]  --> src/main.rs:1:5
Dec 19 20:03:09.606 INFO [stderr]   |
Dec 19 20:03:09.606 INFO [stderr] 1 | use std::thread;
Dec 19 20:03:09.606 INFO [stderr]   |     ^^^^^^^^^^^
Dec 19 20:03:09.606 INFO [stderr]   |
Dec 19 20:03:09.606 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 20:03:09.606 INFO [stderr] 
Dec 19 20:03:09.635 INFO [stderr] warning: crate `RustSample` should have a snake case name such as `rust_sample`
Dec 19 20:03:09.635 INFO [stderr]   |
Dec 19 20:03:09.635 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 20:03:09.635 INFO [stderr] 
Dec 19 20:03:09.635 INFO [stderr] warning: function `returnFormat` should have a snake case name such as `return_format`
Dec 19 20:03:09.635 INFO [stderr]  --> src/main.rs:4:1
Dec 19 20:03:09.635 INFO [stderr]   |
Dec 19 20:03:09.635 INFO [stderr] 4 | / fn returnFormat(i : i32) -> String{
Dec 19 20:03:09.635 INFO [stderr] 5 | |     format!("{}",i)
Dec 19 20:03:09.635 INFO [stderr] 6 | | }
Dec 19 20:03:09.635 INFO [stderr]   | |_^
Dec 19 20:03:09.635 INFO [stderr] 
Dec 19 20:03:09.688 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
Dec 19 20:03:10.114 INFO running `"docker" "inspect" "8d2fc53dd7c9c370e48e63ca875145e74efc02af4adf9e6f2d697da8124397f4"`
Dec 19 20:03:10.206 INFO running `"docker" "rm" "-f" "8d2fc53dd7c9c370e48e63ca875145e74efc02af4adf9e6f2d697da8124397f4"`
Dec 19 20:03:10.350 INFO [stdout] 8d2fc53dd7c9c370e48e63ca875145e74efc02af4adf9e6f2d697da8124397f4