Dec 04 22:47:05.593 INFO checking alfanick/xxcalc-rs against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 22:47:05.593 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 22:47:05.972 INFO [stdout] 845c29038e4c8aa9b365711c3da07f030a766f2bdbdbcac79aa685415f27a575
Dec 04 22:47:05.981 INFO running `"docker" "start" "-a" "845c29038e4c8aa9b365711c3da07f030a766f2bdbdbcac79aa685415f27a575"`
Dec 04 22:47:07.583 INFO [stderr] usermod: no changes
Dec 04 22:47:07.672 INFO [stderr]     Checking smallvec v0.3.1
Dec 04 22:47:08.507 INFO [stderr]     Checking xxcalc v0.2.1 (/source)
Dec 04 22:47:09.323 INFO [stderr] warning: unused macro definition
Dec 04 22:47:09.323 INFO [stderr]    --> src/tokenizer.rs:265:1
Dec 04 22:47:09.323 INFO [stderr]     |
Dec 04 22:47:09.323 INFO [stderr] 265 | / macro_rules! tokenize {
Dec 04 22:47:09.323 INFO [stderr] 266 | |   ($x:expr) => (Tokenizer::default().process($x).to_owned())
Dec 04 22:47:09.323 INFO [stderr] 267 | | }
Dec 04 22:47:09.323 INFO [stderr]     | |_^
Dec 04 22:47:09.323 INFO [stderr]     |
Dec 04 22:47:09.323 INFO [stderr]     = note: #[warn(unused_macros)] on by default
Dec 04 22:47:09.323 INFO [stderr] 
Dec 04 22:47:09.323 INFO [stderr] warning: unused macro definition
Dec 04 22:47:09.323 INFO [stderr]    --> src/tokenizer.rs:269:1
Dec 04 22:47:09.323 INFO [stderr]     |
Dec 04 22:47:09.323 INFO [stderr] 269 | / macro_rules! tokenize_ref {
Dec 04 22:47:09.323 INFO [stderr] 270 | |   ($x:expr) => (Tokenizer::default().process($x))
Dec 04 22:47:09.323 INFO [stderr] 271 | | }
Dec 04 22:47:09.323 INFO [stderr]     | |_^
Dec 04 22:47:09.323 INFO [stderr] 
Dec 04 22:47:09.838 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 04 22:47:09.838 INFO [stderr]    --> src/polynomial.rs:416:5
Dec 04 22:47:09.838 INFO [stderr]     |
Dec 04 22:47:09.838 INFO [stderr] 416 |     self + &other;
Dec 04 22:47:09.838 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 04 22:47:09.838 INFO [stderr]     |
Dec 04 22:47:09.838 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 22:47:09.838 INFO [stderr] 
Dec 04 22:47:09.840 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 04 22:47:09.840 INFO [stderr]    --> src/polynomial.rs:500:5
Dec 04 22:47:09.840 INFO [stderr]     |
Dec 04 22:47:09.840 INFO [stderr] 500 |     self - &other;
Dec 04 22:47:09.840 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 04 22:47:09.840 INFO [stderr] 
Dec 04 22:47:09.840 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 04 22:47:09.840 INFO [stderr]    --> src/polynomial.rs:596:5
Dec 04 22:47:09.840 INFO [stderr]     |
Dec 04 22:47:09.840 INFO [stderr] 596 |     self * &other;
Dec 04 22:47:09.840 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 04 22:47:09.840 INFO [stderr] 
Dec 04 22:47:09.840 INFO [stderr] warning: unused return value of `std::ops::Mul::mul` that must be used
Dec 04 22:47:09.840 INFO [stderr]    --> src/polynomial.rs:618:5
Dec 04 22:47:09.840 INFO [stderr]     |
Dec 04 22:47:09.840 INFO [stderr] 618 |     self.mul(other);
Dec 04 22:47:09.840 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 04 22:47:09.840 INFO [stderr] 
Dec 04 22:47:09.846 INFO [stderr] warning: unused macro definition
Dec 04 22:47:09.847 INFO [stderr]    --> src/tokenizer.rs:265:1
Dec 04 22:47:09.847 INFO [stderr]     |
Dec 04 22:47:09.847 INFO [stderr] 265 | / macro_rules! tokenize {
Dec 04 22:47:09.847 INFO [stderr] 266 | |   ($x:expr) => (Tokenizer::default().process($x).to_owned())
Dec 04 22:47:09.847 INFO [stderr] 267 | | }
Dec 04 22:47:09.847 INFO [stderr]     | |_^
Dec 04 22:47:09.847 INFO [stderr]     |
Dec 04 22:47:09.847 INFO [stderr]     = note: #[warn(unused_macros)] on by default
Dec 04 22:47:09.847 INFO [stderr] 
Dec 04 22:47:12.942 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 04 22:47:12.942 INFO [stderr]    --> src/polynomial.rs:416:5
Dec 04 22:47:12.942 INFO [stderr]     |
Dec 04 22:47:12.942 INFO [stderr] 416 |     self + &other;
Dec 04 22:47:12.942 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 04 22:47:12.942 INFO [stderr]     |
Dec 04 22:47:12.942 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 22:47:12.942 INFO [stderr] 
Dec 04 22:47:12.942 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 04 22:47:12.942 INFO [stderr]    --> src/polynomial.rs:500:5
Dec 04 22:47:12.942 INFO [stderr]     |
Dec 04 22:47:12.942 INFO [stderr] 500 |     self - &other;
Dec 04 22:47:12.942 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 04 22:47:12.942 INFO [stderr] 
Dec 04 22:47:12.942 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 04 22:47:12.942 INFO [stderr]    --> src/polynomial.rs:596:5
Dec 04 22:47:12.942 INFO [stderr]     |
Dec 04 22:47:12.942 INFO [stderr] 596 |     self * &other;
Dec 04 22:47:12.942 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 04 22:47:12.942 INFO [stderr] 
Dec 04 22:47:12.942 INFO [stderr] warning: unused return value of `std::ops::Mul::mul` that must be used
Dec 04 22:47:12.942 INFO [stderr]    --> src/polynomial.rs:618:5
Dec 04 22:47:12.943 INFO [stderr]     |
Dec 04 22:47:12.943 INFO [stderr] 618 |     self.mul(other);
Dec 04 22:47:12.943 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 04 22:47:12.943 INFO [stderr] 
Dec 04 22:47:13.026 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.42s
Dec 04 22:47:13.028 INFO [stderr] su: No module specific data is present
Dec 04 22:47:13.866 INFO running `"docker" "inspect" "845c29038e4c8aa9b365711c3da07f030a766f2bdbdbcac79aa685415f27a575"`
Dec 04 22:47:14.095 INFO running `"docker" "rm" "-f" "845c29038e4c8aa9b365711c3da07f030a766f2bdbdbcac79aa685415f27a575"`
Dec 04 22:47:14.379 INFO [stdout] 845c29038e4c8aa9b365711c3da07f030a766f2bdbdbcac79aa685415f27a575