Dec 05 04:09:09.333 INFO checking x-923-0.1.2 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 04:09:09.333 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 05 04:09:09.540 INFO [stdout] bd85ccef3fa4c11e174ebfe32305eac010f6c94695ce0701712c02511cd10beb
Dec 05 04:09:09.544 INFO running `"docker" "start" "-a" "bd85ccef3fa4c11e174ebfe32305eac010f6c94695ce0701712c02511cd10beb"`
Dec 05 04:09:10.347 INFO [stderr] usermod: no changes
Dec 05 04:09:10.391 INFO [stderr]     Checking x-923 v0.1.2 (/source)
Dec 05 04:09:10.859 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:09:10.859 INFO [stderr]   --> src/lib.rs:20:19
Dec 05 04:09:10.859 INFO [stderr]    |
Dec 05 04:09:10.859 INFO [stderr] 20 | pub fn pad_buffer(mut buffer: &mut Vec<u8>, block_size: u8) {
Dec 05 04:09:10.859 INFO [stderr]    |                   ----^^^^^^
Dec 05 04:09:10.859 INFO [stderr]    |                   |
Dec 05 04:09:10.859 INFO [stderr]    |                   help: remove this `mut`
Dec 05 04:09:10.859 INFO [stderr]    |
Dec 05 04:09:10.859 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 04:09:10.859 INFO [stderr] 
Dec 05 04:09:10.859 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:09:10.859 INFO [stderr]   --> src/lib.rs:31:22
Dec 05 04:09:10.859 INFO [stderr]    |
Dec 05 04:09:10.859 INFO [stderr] 31 | pub fn un_pad_buffer(mut buffer: &mut Vec<u8>) {
Dec 05 04:09:10.859 INFO [stderr]    |                      ----^^^^^^
Dec 05 04:09:10.859 INFO [stderr]    |                      |
Dec 05 04:09:10.859 INFO [stderr]    |                      help: remove this `mut`
Dec 05 04:09:10.859 INFO [stderr] 
Dec 05 04:09:11.050 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:09:11.051 INFO [stderr]   --> src/lib.rs:20:19
Dec 05 04:09:11.051 INFO [stderr]    |
Dec 05 04:09:11.051 INFO [stderr] 20 | pub fn pad_buffer(mut buffer: &mut Vec<u8>, block_size: u8) {
Dec 05 04:09:11.051 INFO [stderr]    |                   ----^^^^^^
Dec 05 04:09:11.051 INFO [stderr]    |                   |
Dec 05 04:09:11.052 INFO [stderr]    |                   help: remove this `mut`
Dec 05 04:09:11.052 INFO [stderr]    |
Dec 05 04:09:11.052 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 04:09:11.052 INFO [stderr] 
Dec 05 04:09:11.052 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:09:11.053 INFO [stderr]   --> src/lib.rs:31:22
Dec 05 04:09:11.053 INFO [stderr]    |
Dec 05 04:09:11.053 INFO [stderr] 31 | pub fn un_pad_buffer(mut buffer: &mut Vec<u8>) {
Dec 05 04:09:11.053 INFO [stderr]    |                      ----^^^^^^
Dec 05 04:09:11.053 INFO [stderr]    |                      |
Dec 05 04:09:11.053 INFO [stderr]    |                      help: remove this `mut`
Dec 05 04:09:11.054 INFO [stderr] 
Dec 05 04:09:11.463 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
Dec 05 04:09:11.466 INFO [stderr] su: No module specific data is present
Dec 05 04:09:11.798 INFO running `"docker" "inspect" "bd85ccef3fa4c11e174ebfe32305eac010f6c94695ce0701712c02511cd10beb"`
Dec 05 04:09:11.896 INFO running `"docker" "rm" "-f" "bd85ccef3fa4c11e174ebfe32305eac010f6c94695ce0701712c02511cd10beb"`
Dec 05 04:09:12.000 INFO [stdout] bd85ccef3fa4c11e174ebfe32305eac010f6c94695ce0701712c02511cd10beb