[INFO] updating cached repository alfanick/xxcalc-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alfanick/xxcalc-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alfanick/xxcalc-rs" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/alfanick/xxcalc-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/alfanick/xxcalc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alfanick/xxcalc-rs" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/alfanick/xxcalc-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/alfanick/xxcalc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3cc7df7dc2348a75252b37878076c291adad4ba5
[INFO] sha for GitHub repo alfanick/xxcalc-rs: 3cc7df7dc2348a75252b37878076c291adad4ba5
[INFO] validating manifest of alfanick/xxcalc-rs on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of alfanick/xxcalc-rs on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing alfanick/xxcalc-rs
[INFO] finished frobbing alfanick/xxcalc-rs
[INFO] frobbed toml for alfanick/xxcalc-rs written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/alfanick/xxcalc-rs/Cargo.toml
[INFO] started frobbing alfanick/xxcalc-rs
[INFO] finished frobbing alfanick/xxcalc-rs
[INFO] frobbed toml for alfanick/xxcalc-rs written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/alfanick/xxcalc-rs/Cargo.toml
[INFO] crate alfanick/xxcalc-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking alfanick/xxcalc-rs against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-0/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/alfanick/xxcalc-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 93a51eae51ec4491e7c68611420cdeb85d34a9e81e73f56bc3291023976fa2b9
[INFO] running `"docker" "start" "-a" "93a51eae51ec4491e7c68611420cdeb85d34a9e81e73f56bc3291023976fa2b9"`
[INFO] [stderr]     Checking smallvec v0.3.1
[INFO] [stderr]     Checking xxcalc v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/tokenizer.rs:265:1
[INFO] [stderr]     |
[INFO] [stderr] 265 | / macro_rules! tokenize {
[INFO] [stderr] 266 | |   ($x:expr) => (Tokenizer::default().process($x).to_owned())
[INFO] [stderr] 267 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/tokenizer.rs:269:1
[INFO] [stderr]     |
[INFO] [stderr] 269 | / macro_rules! tokenize_ref {
[INFO] [stderr] 270 | |   ($x:expr) => (Tokenizer::default().process($x))
[INFO] [stderr] 271 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/tokenizer.rs:265:1
[INFO] [stderr]     |
[INFO] [stderr] 265 | / macro_rules! tokenize {
[INFO] [stderr] 266 | |   ($x:expr) => (Tokenizer::default().process($x).to_owned())
[INFO] [stderr] 267 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/polynomial.rs:416:5
[INFO] [stderr]     |
[INFO] [stderr] 416 |     self + &other;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/polynomial.rs:500:5
[INFO] [stderr]     |
[INFO] [stderr] 500 |     self - &other;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/polynomial.rs:596:5
[INFO] [stderr]     |
[INFO] [stderr] 596 |     self * &other;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::ops::Mul::mul` that must be used
[INFO] [stderr]    --> src/polynomial.rs:618:5
[INFO] [stderr]     |
[INFO] [stderr] 618 |     self.mul(other);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/polynomial.rs:416:5
[INFO] [stderr]     |
[INFO] [stderr] 416 |     self + &other;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/polynomial.rs:500:5
[INFO] [stderr]     |
[INFO] [stderr] 500 |     self - &other;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/polynomial.rs:596:5
[INFO] [stderr]     |
[INFO] [stderr] 596 |     self * &other;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::ops::Mul::mul` that must be used
[INFO] [stderr]    --> src/polynomial.rs:618:5
[INFO] [stderr]     |
[INFO] [stderr] 618 |     self.mul(other);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `"docker" "inspect" "93a51eae51ec4491e7c68611420cdeb85d34a9e81e73f56bc3291023976fa2b9"`
[INFO] running `"docker" "rm" "-f" "93a51eae51ec4491e7c68611420cdeb85d34a9e81e73f56bc3291023976fa2b9"`
[INFO] [stdout] 93a51eae51ec4491e7c68611420cdeb85d34a9e81e73f56bc3291023976fa2b9