Dec 14 13:34:25.148 INFO testing x-923-0.1.2 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 13:34:25.148 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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 14 13:34:25.311 INFO [stdout] e45cce93b22cea2bb6afd30e34a97d6b2eaef90477361cff8a24f4e8fb6311ba
Dec 14 13:34:25.313 INFO running `"docker" "start" "-a" "e45cce93b22cea2bb6afd30e34a97d6b2eaef90477361cff8a24f4e8fb6311ba"`
Dec 14 13:34:25.723 INFO [stderr] usermod: no changes
Dec 14 13:34:25.767 INFO [stderr]    Compiling x-923 v0.1.2 (/source)
Dec 14 13:34:26.191 INFO [stderr] warning: variable does not need to be mutable
Dec 14 13:34:26.191 INFO [stderr]   --> src/lib.rs:20:19
Dec 14 13:34:26.191 INFO [stderr]    |
Dec 14 13:34:26.191 INFO [stderr] 20 | pub fn pad_buffer(mut buffer: &mut Vec<u8>, block_size: u8) {
Dec 14 13:34:26.191 INFO [stderr]    |                   ----^^^^^^
Dec 14 13:34:26.191 INFO [stderr]    |                   |
Dec 14 13:34:26.191 INFO [stderr]    |                   help: remove this `mut`
Dec 14 13:34:26.191 INFO [stderr]    |
Dec 14 13:34:26.191 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 13:34:26.191 INFO [stderr] 
Dec 14 13:34:26.191 INFO [stderr] warning: variable does not need to be mutable
Dec 14 13:34:26.191 INFO [stderr]   --> src/lib.rs:31:22
Dec 14 13:34:26.191 INFO [stderr]    |
Dec 14 13:34:26.191 INFO [stderr] 31 | pub fn un_pad_buffer(mut buffer: &mut Vec<u8>) {
Dec 14 13:34:26.191 INFO [stderr]    |                      ----^^^^^^
Dec 14 13:34:26.191 INFO [stderr]    |                      |
Dec 14 13:34:26.191 INFO [stderr]    |                      help: remove this `mut`
Dec 14 13:34:26.191 INFO [stderr] 
Dec 14 13:34:26.655 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Dec 14 13:34:26.658 INFO [stderr] su: No module specific data is present
Dec 14 13:34:27.282 INFO running `"docker" "inspect" "e45cce93b22cea2bb6afd30e34a97d6b2eaef90477361cff8a24f4e8fb6311ba"`
Dec 14 13:34:27.448 INFO running `"docker" "rm" "-f" "e45cce93b22cea2bb6afd30e34a97d6b2eaef90477361cff8a24f4e8fb6311ba"`
Dec 14 13:34:27.591 INFO [stdout] e45cce93b22cea2bb6afd30e34a97d6b2eaef90477361cff8a24f4e8fb6311ba
Dec 14 13:34:27.597 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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 14 13:34:27.879 INFO [stdout] 80ee1b8fa37362a9c1ff338d97c5ba6c29e951ed5f431ef650235938fc33df66
Dec 14 13:34:27.885 INFO running `"docker" "start" "-a" "80ee1b8fa37362a9c1ff338d97c5ba6c29e951ed5f431ef650235938fc33df66"`
Dec 14 13:34:29.047 INFO [stderr] usermod: no changes
Dec 14 13:34:29.114 INFO [stderr]    Compiling x-923 v0.1.2 (/source)
Dec 14 13:34:29.795 INFO [stderr] warning: variable does not need to be mutable
Dec 14 13:34:29.795 INFO [stderr]   --> src/lib.rs:20:19
Dec 14 13:34:29.795 INFO [stderr]    |
Dec 14 13:34:29.795 INFO [stderr] 20 | pub fn pad_buffer(mut buffer: &mut Vec<u8>, block_size: u8) {
Dec 14 13:34:29.795 INFO [stderr]    |                   ----^^^^^^
Dec 14 13:34:29.795 INFO [stderr]    |                   |
Dec 14 13:34:29.795 INFO [stderr]    |                   help: remove this `mut`
Dec 14 13:34:29.795 INFO [stderr]    |
Dec 14 13:34:29.795 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 13:34:29.795 INFO [stderr] 
Dec 14 13:34:29.801 INFO [stderr] warning: variable does not need to be mutable
Dec 14 13:34:29.801 INFO [stderr]   --> src/lib.rs:31:22
Dec 14 13:34:29.801 INFO [stderr]    |
Dec 14 13:34:29.801 INFO [stderr] 31 | pub fn un_pad_buffer(mut buffer: &mut Vec<u8>) {
Dec 14 13:34:29.801 INFO [stderr]    |                      ----^^^^^^
Dec 14 13:34:29.801 INFO [stderr]    |                      |
Dec 14 13:34:29.801 INFO [stderr]    |                      help: remove this `mut`
Dec 14 13:34:29.801 INFO [stderr] 
Dec 14 13:34:30.599 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
Dec 14 13:34:30.602 INFO [stderr] su: No module specific data is present
Dec 14 13:34:31.455 INFO running `"docker" "inspect" "80ee1b8fa37362a9c1ff338d97c5ba6c29e951ed5f431ef650235938fc33df66"`
Dec 14 13:34:31.568 INFO running `"docker" "rm" "-f" "80ee1b8fa37362a9c1ff338d97c5ba6c29e951ed5f431ef650235938fc33df66"`
Dec 14 13:34:31.719 INFO [stdout] 80ee1b8fa37362a9c1ff338d97c5ba6c29e951ed5f431ef650235938fc33df66