[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 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] c05c280f21d608c026a607c7b73a8f0123eb4422579f699719825781a67a45de
[INFO] running `"docker" "start" "-a" "c05c280f21d608c026a607c7b73a8f0123eb4422579f699719825781a67a45de"`
[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 0.44s
[INFO] running `"docker" "inspect" "c05c280f21d608c026a607c7b73a8f0123eb4422579f699719825781a67a45de"`
[INFO] running `"docker" "rm" "-f" "c05c280f21d608c026a607c7b73a8f0123eb4422579f699719825781a67a45de"`
[INFO] [stdout] c05c280f21d608c026a607c7b73a8f0123eb4422579f699719825781a67a45de
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8949497692eb3e31eb8bd7a47b18d23ae1cafa67d8b5434ed62e4a99a2cb3256
[INFO] running `"docker" "start" "-a" "8949497692eb3e31eb8bd7a47b18d23ae1cafa67d8b5434ed62e4a99a2cb3256"`
[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 1.55s
[INFO] running `"docker" "inspect" "8949497692eb3e31eb8bd7a47b18d23ae1cafa67d8b5434ed62e4a99a2cb3256"`
[INFO] running `"docker" "rm" "-f" "8949497692eb3e31eb8bd7a47b18d23ae1cafa67d8b5434ed62e4a99a2cb3256"`
[INFO] [stdout] 8949497692eb3e31eb8bd7a47b18d23ae1cafa67d8b5434ed62e4a99a2cb3256
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 1281b9aa4ef46381b9221537b30b7fa76563e4a33aa964fc907f58aaf7db1a99
[INFO] running `"docker" "start" "-a" "1281b9aa4ef46381b9221537b30b7fa76563e4a33aa964fc907f58aaf7db1a99"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/matrust-5922f18576663179
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test test::dimensions ... ok
[INFO] [stdout] test test::index ... ok
[INFO] [stdout] test test::add ... ok
[INFO] [stdout] test test::map ... ok
[INFO] [stdout] test test::sub ... ok
[INFO] [stdout] test test::scale ... ok
[INFO] [stdout] test test::map2 ... ok
[INFO] [stdout] test test::new ... ok
[INFO] [stdout] test test::vec_mult ... ok
[INFO] [stdout] test test::transpose ... ok
[INFO] [stdout] test test::insert ... ok
[INFO] [stdout] test test::new_with_val ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests matrust
[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" "1281b9aa4ef46381b9221537b30b7fa76563e4a33aa964fc907f58aaf7db1a99"`
[INFO] running `"docker" "rm" "-f" "1281b9aa4ef46381b9221537b30b7fa76563e4a33aa964fc907f58aaf7db1a99"`
[INFO] [stdout] 1281b9aa4ef46381b9221537b30b7fa76563e4a33aa964fc907f58aaf7db1a99