Dec 12 11:39:03.374 INFO checking mascheroni-0.2.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 11:39:03.374 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 11:39:03.555 INFO [stdout] 1f4a57d37a03f119960b5285eb4d2e04b744b59596f399d3dc8c27b989f9b6b5
Dec 12 11:39:03.558 INFO running `"docker" "start" "-a" "1f4a57d37a03f119960b5285eb4d2e04b744b59596f399d3dc8c27b989f9b6b5"`
Dec 12 11:39:04.456 INFO [stderr] usermod: no changes
Dec 12 11:39:04.496 INFO [stderr]     Checking mascheroni v0.2.0 (/source)
Dec 12 11:39:05.044 INFO [stderr] warning: unused variable: `ret`
Dec 12 11:39:05.044 INFO [stderr]   --> src/lib.rs:40:13
Dec 12 11:39:05.044 INFO [stderr]    |
Dec 12 11:39:05.044 INFO [stderr] 40 |     let mut ret: u64 = 0;
Dec 12 11:39:05.044 INFO [stderr]    |             ^^^ help: consider using `_ret` instead
Dec 12 11:39:05.044 INFO [stderr]    |
Dec 12 11:39:05.044 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 11:39:05.045 INFO [stderr] 
Dec 12 11:39:05.045 INFO [stderr] warning: variable does not need to be mutable
Dec 12 11:39:05.045 INFO [stderr]   --> src/lib.rs:40:9
Dec 12 11:39:05.045 INFO [stderr]    |
Dec 12 11:39:05.045 INFO [stderr] 40 |     let mut ret: u64 = 0;
Dec 12 11:39:05.045 INFO [stderr]    |         ----^^^
Dec 12 11:39:05.045 INFO [stderr]    |         |
Dec 12 11:39:05.045 INFO [stderr]    |         help: remove this `mut`
Dec 12 11:39:05.045 INFO [stderr]    |
Dec 12 11:39:05.045 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 11:39:05.045 INFO [stderr] 
Dec 12 11:39:05.052 INFO [stderr] warning: function is never used: `test_is_not_palindrome`
Dec 12 11:39:05.052 INFO [stderr]    --> src/lib.rs:112:1
Dec 12 11:39:05.052 INFO [stderr]     |
Dec 12 11:39:05.052 INFO [stderr] 112 | fn test_is_not_palindrome() {
Dec 12 11:39:05.052 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 11:39:05.052 INFO [stderr]     |
Dec 12 11:39:05.052 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 12 11:39:05.052 INFO [stderr] 
Dec 12 11:39:05.220 INFO [stderr] warning: unused variable: `ret`
Dec 12 11:39:05.220 INFO [stderr]   --> src/lib.rs:40:13
Dec 12 11:39:05.220 INFO [stderr]    |
Dec 12 11:39:05.220 INFO [stderr] 40 |     let mut ret: u64 = 0;
Dec 12 11:39:05.220 INFO [stderr]    |             ^^^ help: consider using `_ret` instead
Dec 12 11:39:05.220 INFO [stderr]    |
Dec 12 11:39:05.220 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 11:39:05.220 INFO [stderr] 
Dec 12 11:39:05.220 INFO [stderr] warning: variable does not need to be mutable
Dec 12 11:39:05.220 INFO [stderr]   --> src/lib.rs:40:9
Dec 12 11:39:05.220 INFO [stderr]    |
Dec 12 11:39:05.220 INFO [stderr] 40 |     let mut ret: u64 = 0;
Dec 12 11:39:05.220 INFO [stderr]    |         ----^^^
Dec 12 11:39:05.220 INFO [stderr]    |         |
Dec 12 11:39:05.220 INFO [stderr]    |         help: remove this `mut`
Dec 12 11:39:05.220 INFO [stderr]    |
Dec 12 11:39:05.220 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 11:39:05.220 INFO [stderr] 
Dec 12 11:39:05.236 INFO [stderr] warning: function is never used: `test_is_not_palindrome`
Dec 12 11:39:05.236 INFO [stderr]    --> src/lib.rs:112:1
Dec 12 11:39:05.236 INFO [stderr]     |
Dec 12 11:39:05.236 INFO [stderr] 112 | fn test_is_not_palindrome() {
Dec 12 11:39:05.236 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 11:39:05.236 INFO [stderr]     |
Dec 12 11:39:05.236 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 12 11:39:05.236 INFO [stderr] 
Dec 12 11:39:05.270 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
Dec 12 11:39:05.276 INFO [stderr] su: No module specific data is present
Dec 12 11:39:05.768 INFO running `"docker" "inspect" "1f4a57d37a03f119960b5285eb4d2e04b744b59596f399d3dc8c27b989f9b6b5"`
Dec 12 11:39:06.072 INFO running `"docker" "rm" "-f" "1f4a57d37a03f119960b5285eb4d2e04b744b59596f399d3dc8c27b989f9b6b5"`
Dec 12 11:39:06.292 INFO [stdout] 1f4a57d37a03f119960b5285eb4d2e04b744b59596f399d3dc8c27b989f9b6b5