[INFO] updating cached repository okayplanet/tensor
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/okayplanet/tensor
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/okayplanet/tensor" "work/ex/beta-1.38-1/sources/1.37.0/gh/okayplanet/tensor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/okayplanet/tensor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/okayplanet/tensor" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/okayplanet/tensor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/okayplanet/tensor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8b75e77f52996ff88fa205ef4b5c50a1997f5eb5
[INFO] sha for GitHub repo okayplanet/tensor: 8b75e77f52996ff88fa205ef4b5c50a1997f5eb5
[INFO] validating manifest of okayplanet/tensor on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of okayplanet/tensor on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing okayplanet/tensor
[INFO] finished frobbing okayplanet/tensor
[INFO] frobbed toml for okayplanet/tensor written to work/ex/beta-1.38-1/sources/1.37.0/gh/okayplanet/tensor/Cargo.toml
[INFO] started frobbing okayplanet/tensor
[INFO] finished frobbing okayplanet/tensor
[INFO] frobbed toml for okayplanet/tensor written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/okayplanet/tensor/Cargo.toml
[INFO] crate okayplanet/tensor already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/okayplanet/tensor/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing okayplanet/tensor against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/okayplanet/tensor:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 448bd897d4f0bcd2253cbfa19b29d2233c45b4a43cc19aab953ce5a90da01ffd
[INFO] running `"docker" "start" "-a" "448bd897d4f0bcd2253cbfa19b29d2233c45b4a43cc19aab953ce5a90da01ffd"`
[INFO] [stderr]    Compiling tensor v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tensor/mod.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let mut new_tensor = &mut Tensor::build(self.dim, new_rank, vec![T::zero(); len]);
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tensor/mod.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let mut new_tensor = &mut Tensor::build(self.dim, new_rank, vec![T::zero(); len]);
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `"docker" "inspect" "448bd897d4f0bcd2253cbfa19b29d2233c45b4a43cc19aab953ce5a90da01ffd"`
[INFO] running `"docker" "rm" "-f" "448bd897d4f0bcd2253cbfa19b29d2233c45b4a43cc19aab953ce5a90da01ffd"`
[INFO] [stdout] 448bd897d4f0bcd2253cbfa19b29d2233c45b4a43cc19aab953ce5a90da01ffd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/okayplanet/tensor:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] d5b3029d47a5465f4b587402d4cc84482333d00df30b6439511b475ecd71af06
[INFO] running `"docker" "start" "-a" "d5b3029d47a5465f4b587402d4cc84482333d00df30b6439511b475ecd71af06"`
[INFO] [stderr]    Compiling tensor v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `v2`
[INFO] [stderr]   --> tests/lib.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let v2 = v1.inner_product(&v1);
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_v2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v1_dot_v1`
[INFO] [stderr]   --> tests/lib.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let v1_dot_v1 = Tensor::build(1, 0, vec![14]);
[INFO] [stderr]    |         ^^^^^^^^^ help: consider prefixing with an underscore: `_v1_dot_v1`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tensor/mod.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let mut new_tensor = &mut Tensor::build(self.dim, new_rank, vec![T::zero(); len]);
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tensor/mod.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let mut new_tensor = &mut Tensor::build(self.dim, new_rank, vec![T::zero(); len]);
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "d5b3029d47a5465f4b587402d4cc84482333d00df30b6439511b475ecd71af06"`
[INFO] running `"docker" "rm" "-f" "d5b3029d47a5465f4b587402d4cc84482333d00df30b6439511b475ecd71af06"`
[INFO] [stdout] d5b3029d47a5465f4b587402d4cc84482333d00df30b6439511b475ecd71af06
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/okayplanet/tensor:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 96369905db9c20e099bc540d150ea9a2934a92dfe83fe50f31dd3f9bf819fca1
[INFO] running `"docker" "start" "-a" "96369905db9c20e099bc540d150ea9a2934a92dfe83fe50f31dd3f9bf819fca1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tensor-a510bf0fc74a32c6
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tensor-926000144503b04d
[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] [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] [stderr]      Running /opt/crater/target/debug/deps/lib-242a3e5deed8f09c
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test inner_product ... ok
[INFO] [stderr]    Doc-tests tensor
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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" "96369905db9c20e099bc540d150ea9a2934a92dfe83fe50f31dd3f9bf819fca1"`
[INFO] running `"docker" "rm" "-f" "96369905db9c20e099bc540d150ea9a2934a92dfe83fe50f31dd3f9bf819fca1"`
[INFO] [stdout] 96369905db9c20e099bc540d150ea9a2934a92dfe83fe50f31dd3f9bf819fca1