Nov 30 12:47:48.357 INFO checking x-923-0.1.2 against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 12:47:48.357 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-1/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 30 12:47:48.724 INFO [stdout] 00ceb53f94a1d3faa295ac86ab92132e3dcc0d1e5e5976b031b77d64cc5eb814
Nov 30 12:47:48.732 INFO running `"docker" "start" "-a" "00ceb53f94a1d3faa295ac86ab92132e3dcc0d1e5e5976b031b77d64cc5eb814"`
Nov 30 12:47:49.258 INFO [stderr] usermod: no changes
Nov 30 12:47:49.297 INFO [stderr]     Checking x-923 v0.1.2 (/source)
Nov 30 12:47:49.721 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:47:49.721 INFO [stderr]   --> src/lib.rs:20:19
Nov 30 12:47:49.721 INFO [stderr]    |
Nov 30 12:47:49.721 INFO [stderr] 20 | pub fn pad_buffer(mut buffer: &mut Vec<u8>, block_size: u8) {
Nov 30 12:47:49.721 INFO [stderr]    |                   ----^^^^^^
Nov 30 12:47:49.721 INFO [stderr]    |                   |
Nov 30 12:47:49.721 INFO [stderr]    |                   help: remove this `mut`
Nov 30 12:47:49.721 INFO [stderr]    |
Nov 30 12:47:49.721 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 12:47:49.721 INFO [stderr] 
Nov 30 12:47:49.721 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:47:49.721 INFO [stderr]   --> src/lib.rs:31:22
Nov 30 12:47:49.721 INFO [stderr]    |
Nov 30 12:47:49.721 INFO [stderr] 31 | pub fn un_pad_buffer(mut buffer: &mut Vec<u8>) {
Nov 30 12:47:49.721 INFO [stderr]    |                      ----^^^^^^
Nov 30 12:47:49.721 INFO [stderr]    |                      |
Nov 30 12:47:49.721 INFO [stderr]    |                      help: remove this `mut`
Nov 30 12:47:49.721 INFO [stderr] 
Nov 30 12:47:50.312 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:47:50.312 INFO [stderr]   --> src/lib.rs:20:19
Nov 30 12:47:50.312 INFO [stderr]    |
Nov 30 12:47:50.312 INFO [stderr] 20 | pub fn pad_buffer(mut buffer: &mut Vec<u8>, block_size: u8) {
Nov 30 12:47:50.312 INFO [stderr]    |                   ----^^^^^^
Nov 30 12:47:50.312 INFO [stderr]    |                   |
Nov 30 12:47:50.312 INFO [stderr]    |                   help: remove this `mut`
Nov 30 12:47:50.312 INFO [stderr]    |
Nov 30 12:47:50.312 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 12:47:50.312 INFO [stderr] 
Nov 30 12:47:50.312 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:47:50.312 INFO [stderr]   --> src/lib.rs:31:22
Nov 30 12:47:50.312 INFO [stderr]    |
Nov 30 12:47:50.312 INFO [stderr] 31 | pub fn un_pad_buffer(mut buffer: &mut Vec<u8>) {
Nov 30 12:47:50.312 INFO [stderr]    |                      ----^^^^^^
Nov 30 12:47:50.312 INFO [stderr]    |                      |
Nov 30 12:47:50.312 INFO [stderr]    |                      help: remove this `mut`
Nov 30 12:47:50.312 INFO [stderr] 
Nov 30 12:47:50.573 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
Nov 30 12:47:50.575 INFO [stderr] su: No module specific data is present
Nov 30 12:47:51.172 INFO running `"docker" "inspect" "00ceb53f94a1d3faa295ac86ab92132e3dcc0d1e5e5976b031b77d64cc5eb814"`
Nov 30 12:47:51.350 INFO running `"docker" "rm" "-f" "00ceb53f94a1d3faa295ac86ab92132e3dcc0d1e5e5976b031b77d64cc5eb814"`
Nov 30 12:47:51.536 INFO [stdout] 00ceb53f94a1d3faa295ac86ab92132e3dcc0d1e5e5976b031b77d64cc5eb814