Dec 12 04:42:17.912 INFO checking x-923-0.1.2 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 04:42:17.912 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 12 04:42:18.088 INFO [stdout] aab37c27297d38b98bd48d390ad317a18908be85987c510c8e0124e2aa3a2579
Dec 12 04:42:18.094 INFO running `"docker" "start" "-a" "aab37c27297d38b98bd48d390ad317a18908be85987c510c8e0124e2aa3a2579"`
Dec 12 04:42:18.639 INFO [stderr] usermod: no changes
Dec 12 04:42:18.675 INFO [stderr]     Checking x-923 v0.1.2 (/source)
Dec 12 04:42:19.165 INFO [stderr] warning: variable does not need to be mutable
Dec 12 04:42:19.166 INFO [stderr]   --> src/lib.rs:20:19
Dec 12 04:42:19.166 INFO [stderr]    |
Dec 12 04:42:19.166 INFO [stderr] 20 | pub fn pad_buffer(mut buffer: &mut Vec<u8>, block_size: u8) {
Dec 12 04:42:19.166 INFO [stderr]    |                   ----^^^^^^
Dec 12 04:42:19.166 INFO [stderr]    |                   |
Dec 12 04:42:19.166 INFO [stderr]    |                   help: remove this `mut`
Dec 12 04:42:19.167 INFO [stderr]    |
Dec 12 04:42:19.167 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 04:42:19.167 INFO [stderr] 
Dec 12 04:42:19.168 INFO [stderr] warning: variable does not need to be mutable
Dec 12 04:42:19.168 INFO [stderr]   --> src/lib.rs:31:22
Dec 12 04:42:19.168 INFO [stderr]    |
Dec 12 04:42:19.168 INFO [stderr] 31 | pub fn un_pad_buffer(mut buffer: &mut Vec<u8>) {
Dec 12 04:42:19.168 INFO [stderr]    |                      ----^^^^^^
Dec 12 04:42:19.168 INFO [stderr]    |                      |
Dec 12 04:42:19.168 INFO [stderr]    |                      help: remove this `mut`
Dec 12 04:42:19.170 INFO [stderr] 
Dec 12 04:42:19.412 INFO [stderr] warning: variable does not need to be mutable
Dec 12 04:42:19.412 INFO [stderr]   --> src/lib.rs:20:19
Dec 12 04:42:19.412 INFO [stderr]    |
Dec 12 04:42:19.412 INFO [stderr] 20 | pub fn pad_buffer(mut buffer: &mut Vec<u8>, block_size: u8) {
Dec 12 04:42:19.412 INFO [stderr]    |                   ----^^^^^^
Dec 12 04:42:19.412 INFO [stderr]    |                   |
Dec 12 04:42:19.412 INFO [stderr]    |                   help: remove this `mut`
Dec 12 04:42:19.412 INFO [stderr]    |
Dec 12 04:42:19.412 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 04:42:19.412 INFO [stderr] 
Dec 12 04:42:19.412 INFO [stderr] warning: variable does not need to be mutable
Dec 12 04:42:19.412 INFO [stderr]   --> src/lib.rs:31:22
Dec 12 04:42:19.412 INFO [stderr]    |
Dec 12 04:42:19.412 INFO [stderr] 31 | pub fn un_pad_buffer(mut buffer: &mut Vec<u8>) {
Dec 12 04:42:19.412 INFO [stderr]    |                      ----^^^^^^
Dec 12 04:42:19.412 INFO [stderr]    |                      |
Dec 12 04:42:19.412 INFO [stderr]    |                      help: remove this `mut`
Dec 12 04:42:19.412 INFO [stderr] 
Dec 12 04:42:20.033 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
Dec 12 04:42:20.035 INFO [stderr] su: No module specific data is present
Dec 12 04:42:20.749 INFO running `"docker" "inspect" "aab37c27297d38b98bd48d390ad317a18908be85987c510c8e0124e2aa3a2579"`
Dec 12 04:42:21.115 INFO running `"docker" "rm" "-f" "aab37c27297d38b98bd48d390ad317a18908be85987c510c8e0124e2aa3a2579"`
Dec 12 04:42:21.344 INFO [stdout] aab37c27297d38b98bd48d390ad317a18908be85987c510c8e0124e2aa3a2579