[INFO] crate matrust 0.0.6 is already in cache
[INFO] extracting crate matrust 0.0.6 into work/ex/beta-1.37-6/sources/1.36.0/reg/matrust/0.0.6
[INFO] extracting crate matrust 0.0.6 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/matrust/0.0.6
[INFO] validating manifest of matrust-0.0.6 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of matrust-0.0.6 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing matrust-0.0.6
[INFO] finished frobbing matrust-0.0.6
[INFO] frobbed toml for matrust-0.0.6 written to work/ex/beta-1.37-6/sources/1.36.0/reg/matrust/0.0.6/Cargo.toml
[INFO] started frobbing matrust-0.0.6
[INFO] finished frobbing matrust-0.0.6
[INFO] frobbed toml for matrust-0.0.6 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/matrust/0.0.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing matrust-0.0.6 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/matrust/0.0.6:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] debab188bd42d50a9dd1f197ef851d95acf156e7fa22510c99b0bca7edff95e5
[INFO] running `"docker" "start" "-a" "debab188bd42d50a9dd1f197ef851d95acf156e7fa22510c99b0bca7edff95e5"`
[INFO] [stderr]    Compiling matrust v0.0.6 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/lib.rs:132:22
[INFO] [stderr]     |
[INFO] [stderr] 132 |         self.map2(m, (|x, y| x + y))
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/lib.rs:136:22
[INFO] [stderr]     |
[INFO] [stderr] 136 |         self.map2(m, (|x, y| x - y))
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "debab188bd42d50a9dd1f197ef851d95acf156e7fa22510c99b0bca7edff95e5"`
[INFO] running `"docker" "rm" "-f" "debab188bd42d50a9dd1f197ef851d95acf156e7fa22510c99b0bca7edff95e5"`
[INFO] [stdout] debab188bd42d50a9dd1f197ef851d95acf156e7fa22510c99b0bca7edff95e5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/matrust/0.0.6:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 16f71f90b949241c55832c30e17f7853c8c38d1dc1020fdddab3efe704e94cce
[INFO] running `"docker" "start" "-a" "16f71f90b949241c55832c30e17f7853c8c38d1dc1020fdddab3efe704e94cce"`
[INFO] [stderr]    Compiling matrust v0.0.6 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/lib.rs:132:22
[INFO] [stderr]     |
[INFO] [stderr] 132 |         self.map2(m, (|x, y| x + y))
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/lib.rs:136:22
[INFO] [stderr]     |
[INFO] [stderr] 136 |         self.map2(m, (|x, y| x - y))
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/lib.rs:232:29
[INFO] [stderr]     |
[INFO] [stderr] 232 |         assert!(m.map2(&m5, (|x, y| y + x)).is_err());
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `"docker" "inspect" "16f71f90b949241c55832c30e17f7853c8c38d1dc1020fdddab3efe704e94cce"`
[INFO] running `"docker" "rm" "-f" "16f71f90b949241c55832c30e17f7853c8c38d1dc1020fdddab3efe704e94cce"`
[INFO] [stdout] 16f71f90b949241c55832c30e17f7853c8c38d1dc1020fdddab3efe704e94cce
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/matrust/0.0.6:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 73a18fec91401d4c5884b61bdd88112989067d502e5beecc6df8a2133f878374
[INFO] running `"docker" "start" "-a" "73a18fec91401d4c5884b61bdd88112989067d502e5beecc6df8a2133f878374"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/matrust-67779202307ebddc
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test test::index ... ok
[INFO] [stdout] test test::add ... ok
[INFO] [stdout] test test::dimensions ... ok
[INFO] [stdout] test test::map2 ... ok
[INFO] [stdout] test test::insert ... ok
[INFO] [stdout] test test::new ... ok
[INFO] [stdout] test test::scale ... ok
[INFO] [stdout] test test::new_with_val ... ok
[INFO] [stdout] test test::transpose ... ok
[INFO] [stdout] test test::sub ... ok
[INFO] [stdout] test test::map ... ok
[INFO] [stdout] test test::vec_mult ... ok
[INFO] [stderr]    Doc-tests matrust
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "73a18fec91401d4c5884b61bdd88112989067d502e5beecc6df8a2133f878374"`
[INFO] running `"docker" "rm" "-f" "73a18fec91401d4c5884b61bdd88112989067d502e5beecc6df8a2133f878374"`
[INFO] [stdout] 73a18fec91401d4c5884b61bdd88112989067d502e5beecc6df8a2133f878374