Dec 19 09:32:26.601 INFO checking s3rvac/yabir against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:32:26.601 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/s3rvac/yabir:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:32:27.178 INFO [stdout] f48e5b2535b81b69f40c0ab990313927adf3b6c73fdab1a7f6724b62caafa59a
Dec 19 09:32:27.180 INFO running `"docker" "start" "-a" "f48e5b2535b81b69f40c0ab990313927adf3b6c73fdab1a7f6724b62caafa59a"`
Dec 19 09:32:28.940 INFO [stderr]     Checking yabir v0.1.0 (/opt/crater/workdir)
Dec 19 09:32:29.451 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:32:29.451 INFO [stderr]    --> src/runner.rs:112:30
Dec 19 09:32:29.451 INFO [stderr]     |
Dec 19 09:32:29.451 INFO [stderr] 112 |     fn read_value(&mut self, mut input: &mut std::io::Read) -> Result<(), String> {
Dec 19 09:32:29.451 INFO [stderr]     |                              ----^^^^^
Dec 19 09:32:29.451 INFO [stderr]     |                              |
Dec 19 09:32:29.451 INFO [stderr]     |                              help: remove this `mut`
Dec 19 09:32:29.472 INFO [stderr]     |
Dec 19 09:32:29.472 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 09:32:29.472 INFO [stderr] 
Dec 19 09:32:29.474 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:32:29.474 INFO [stderr]    --> src/runner.rs:136:31
Dec 19 09:32:29.474 INFO [stderr]     |
Dec 19 09:32:29.474 INFO [stderr] 136 |     fn write_value(&mut self, mut output: &mut std::io::Write) -> Result<(), String> {
Dec 19 09:32:29.474 INFO [stderr]     |                               ----^^^^^^
Dec 19 09:32:29.474 INFO [stderr]     |                               |
Dec 19 09:32:29.474 INFO [stderr]     |                               help: remove this `mut`
Dec 19 09:32:29.474 INFO [stderr] 
Dec 19 09:32:29.677 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:32:29.677 INFO [stderr]    --> src/runner.rs:112:30
Dec 19 09:32:29.677 INFO [stderr]     |
Dec 19 09:32:29.677 INFO [stderr] 112 |     fn read_value(&mut self, mut input: &mut std::io::Read) -> Result<(), String> {
Dec 19 09:32:29.677 INFO [stderr]     |                              ----^^^^^
Dec 19 09:32:29.678 INFO [stderr]     |                              |
Dec 19 09:32:29.678 INFO [stderr]     |                              help: remove this `mut`
Dec 19 09:32:29.678 INFO [stderr]     |
Dec 19 09:32:29.678 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 09:32:29.678 INFO [stderr] 
Dec 19 09:32:29.678 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:32:29.678 INFO [stderr]    --> src/runner.rs:136:31
Dec 19 09:32:29.678 INFO [stderr]     |
Dec 19 09:32:29.678 INFO [stderr] 136 |     fn write_value(&mut self, mut output: &mut std::io::Write) -> Result<(), String> {
Dec 19 09:32:29.678 INFO [stderr]     |                               ----^^^^^^
Dec 19 09:32:29.678 INFO [stderr]     |                               |
Dec 19 09:32:29.678 INFO [stderr]     |                               help: remove this `mut`
Dec 19 09:32:29.678 INFO [stderr] 
Dec 19 09:32:29.736 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
Dec 19 09:32:30.751 INFO running `"docker" "inspect" "f48e5b2535b81b69f40c0ab990313927adf3b6c73fdab1a7f6724b62caafa59a"`
Dec 19 09:32:30.984 INFO running `"docker" "rm" "-f" "f48e5b2535b81b69f40c0ab990313927adf3b6c73fdab1a7f6724b62caafa59a"`
Dec 19 09:32:31.180 INFO [stdout] f48e5b2535b81b69f40c0ab990313927adf3b6c73fdab1a7f6724b62caafa59a