Dec 12 04:31:27.409 INFO checking xxcalc-0.2.1 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 04:31:27.409 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 04:31:27.629 INFO [stdout] a715a469fce48aada8e30a3b26e5f7d69625a11567ae62283bf41abe60a9e5d7
Dec 12 04:31:27.631 INFO running `"docker" "start" "-a" "a715a469fce48aada8e30a3b26e5f7d69625a11567ae62283bf41abe60a9e5d7"`
Dec 12 04:31:28.624 INFO [stderr] usermod: no changes
Dec 12 04:31:30.535 INFO [stderr]     Checking xxcalc v0.2.1 (/source)
Dec 12 04:31:30.951 INFO [stderr] warning: unused macro definition
Dec 12 04:31:30.951 INFO [stderr]    --> src/tokenizer.rs:267:1
Dec 12 04:31:30.951 INFO [stderr]     |
Dec 12 04:31:30.951 INFO [stderr] 267 | / macro_rules! tokenize {
Dec 12 04:31:30.951 INFO [stderr] 268 | |   ($x:expr) => (Tokenizer::default().process($x).to_owned())
Dec 12 04:31:30.951 INFO [stderr] 269 | | }
Dec 12 04:31:30.951 INFO [stderr]     | |_^
Dec 12 04:31:30.951 INFO [stderr]     |
Dec 12 04:31:30.951 INFO [stderr]     = note: #[warn(unused_macros)] on by default
Dec 12 04:31:30.951 INFO [stderr] 
Dec 12 04:31:30.951 INFO [stderr] warning: unused macro definition
Dec 12 04:31:30.951 INFO [stderr]    --> src/tokenizer.rs:271:1
Dec 12 04:31:30.951 INFO [stderr]     |
Dec 12 04:31:30.951 INFO [stderr] 271 | / macro_rules! tokenize_ref {
Dec 12 04:31:30.951 INFO [stderr] 272 | |   ($x:expr) => (Tokenizer::default().process($x))
Dec 12 04:31:30.951 INFO [stderr] 273 | | }
Dec 12 04:31:30.951 INFO [stderr]     | |_^
Dec 12 04:31:30.951 INFO [stderr] 
Dec 12 04:31:31.152 INFO [stderr] warning: unused macro definition
Dec 12 04:31:31.152 INFO [stderr]    --> src/tokenizer.rs:267:1
Dec 12 04:31:31.152 INFO [stderr]     |
Dec 12 04:31:31.152 INFO [stderr] 267 | / macro_rules! tokenize {
Dec 12 04:31:31.152 INFO [stderr] 268 | |   ($x:expr) => (Tokenizer::default().process($x).to_owned())
Dec 12 04:31:31.152 INFO [stderr] 269 | | }
Dec 12 04:31:31.152 INFO [stderr]     | |_^
Dec 12 04:31:31.152 INFO [stderr]     |
Dec 12 04:31:31.152 INFO [stderr]     = note: #[warn(unused_macros)] on by default
Dec 12 04:31:31.152 INFO [stderr] 
Dec 12 04:31:31.275 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 12 04:31:31.275 INFO [stderr]    --> src/polynomial.rs:416:5
Dec 12 04:31:31.275 INFO [stderr]     |
Dec 12 04:31:31.275 INFO [stderr] 416 |     self + &other;
Dec 12 04:31:31.275 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 12 04:31:31.275 INFO [stderr]     |
Dec 12 04:31:31.275 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 12 04:31:31.275 INFO [stderr] 
Dec 12 04:31:31.275 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 12 04:31:31.275 INFO [stderr]    --> src/polynomial.rs:500:5
Dec 12 04:31:31.275 INFO [stderr]     |
Dec 12 04:31:31.275 INFO [stderr] 500 |     self - &other;
Dec 12 04:31:31.275 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 12 04:31:31.275 INFO [stderr] 
Dec 12 04:31:31.275 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 12 04:31:31.275 INFO [stderr]    --> src/polynomial.rs:596:5
Dec 12 04:31:31.275 INFO [stderr]     |
Dec 12 04:31:31.275 INFO [stderr] 596 |     self * &other;
Dec 12 04:31:31.275 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 12 04:31:31.275 INFO [stderr] 
Dec 12 04:31:31.275 INFO [stderr] warning: unused return value of `std::ops::Mul::mul` that must be used
Dec 12 04:31:31.275 INFO [stderr]    --> src/polynomial.rs:618:5
Dec 12 04:31:31.275 INFO [stderr]     |
Dec 12 04:31:31.275 INFO [stderr] 618 |     self.mul(other);
Dec 12 04:31:31.275 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 12 04:31:31.275 INFO [stderr] 
Dec 12 04:31:33.148 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 12 04:31:33.148 INFO [stderr]    --> src/polynomial.rs:416:5
Dec 12 04:31:33.148 INFO [stderr]     |
Dec 12 04:31:33.148 INFO [stderr] 416 |     self + &other;
Dec 12 04:31:33.148 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 12 04:31:33.148 INFO [stderr]     |
Dec 12 04:31:33.148 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 12 04:31:33.148 INFO [stderr] 
Dec 12 04:31:33.148 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 12 04:31:33.148 INFO [stderr]    --> src/polynomial.rs:500:5
Dec 12 04:31:33.148 INFO [stderr]     |
Dec 12 04:31:33.148 INFO [stderr] 500 |     self - &other;
Dec 12 04:31:33.148 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 12 04:31:33.148 INFO [stderr] 
Dec 12 04:31:33.148 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 12 04:31:33.148 INFO [stderr]    --> src/polynomial.rs:596:5
Dec 12 04:31:33.148 INFO [stderr]     |
Dec 12 04:31:33.148 INFO [stderr] 596 |     self * &other;
Dec 12 04:31:33.148 INFO [stderr]     |     ^^^^^^^^^^^^^
Dec 12 04:31:33.148 INFO [stderr] 
Dec 12 04:31:33.148 INFO [stderr] warning: unused return value of `std::ops::Mul::mul` that must be used
Dec 12 04:31:33.148 INFO [stderr]    --> src/polynomial.rs:618:5
Dec 12 04:31:33.148 INFO [stderr]     |
Dec 12 04:31:33.148 INFO [stderr] 618 |     self.mul(other);
Dec 12 04:31:33.148 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 12 04:31:33.148 INFO [stderr] 
Dec 12 04:31:33.200 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.55s
Dec 12 04:31:33.201 INFO [stderr] su: No module specific data is present
Dec 12 04:31:33.738 INFO running `"docker" "inspect" "a715a469fce48aada8e30a3b26e5f7d69625a11567ae62283bf41abe60a9e5d7"`
Dec 12 04:31:33.898 INFO running `"docker" "rm" "-f" "a715a469fce48aada8e30a3b26e5f7d69625a11567ae62283bf41abe60a9e5d7"`
Dec 12 04:31:34.002 INFO [stdout] a715a469fce48aada8e30a3b26e5f7d69625a11567ae62283bf41abe60a9e5d7