[INFO] updating cached repository bgourlie/hexthing
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bgourlie/hexthing
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bgourlie/hexthing" "work/ex/beta-1.37-6/sources/1.36.0/gh/bgourlie/hexthing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/bgourlie/hexthing'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bgourlie/hexthing" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bgourlie/hexthing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bgourlie/hexthing'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3bcd6afda9f110e68abd469ac3a24b7e2255ad02
[INFO] sha for GitHub repo bgourlie/hexthing: 3bcd6afda9f110e68abd469ac3a24b7e2255ad02
[INFO] validating manifest of bgourlie/hexthing 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 bgourlie/hexthing 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 bgourlie/hexthing
[INFO] finished frobbing bgourlie/hexthing
[INFO] frobbed toml for bgourlie/hexthing written to work/ex/beta-1.37-6/sources/1.36.0/gh/bgourlie/hexthing/Cargo.toml
[INFO] started frobbing bgourlie/hexthing
[INFO] finished frobbing bgourlie/hexthing
[INFO] frobbed toml for bgourlie/hexthing written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bgourlie/hexthing/Cargo.toml
[INFO] crate bgourlie/hexthing already has a lockfile, it will not be regenerated
[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 bgourlie/hexthing 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-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/bgourlie/hexthing:/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] d3823291c0b3cb36bd870c5365275b96a279443e4658a7f6bf4b928a870e3cc8
[INFO] running `"docker" "start" "-a" "d3823291c0b3cb36bd870c5365275b96a279443e4658a7f6bf4b928a870e3cc8"`
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.14
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling approx v0.3.0
[INFO] [stderr]    Compiling generic-array v0.11.1
[INFO] [stderr]    Compiling alga v0.7.2
[INFO] [stderr]    Compiling nalgebra v0.16.5
[INFO] [stderr] warning[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.16.5/src/base/cg.rs:292:44
[INFO] [stderr]     |
[INFO] [stderr] 292 |                 self[(j, i)] += shift[j] * self[(D::dim() - 1, i)];
[INFO] [stderr]     |                 ---------------------------^^^^-------------------
[INFO] [stderr]     |                 |                          |
[INFO] [stderr]     |                 |                          immutable borrow occurs here
[INFO] [stderr]     |                 mutable borrow occurs here
[INFO] [stderr]     |                 mutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr]    Compiling hexthing v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.84s
[INFO] running `"docker" "inspect" "d3823291c0b3cb36bd870c5365275b96a279443e4658a7f6bf4b928a870e3cc8"`
[INFO] running `"docker" "rm" "-f" "d3823291c0b3cb36bd870c5365275b96a279443e4658a7f6bf4b928a870e3cc8"`
[INFO] [stdout] d3823291c0b3cb36bd870c5365275b96a279443e4658a7f6bf4b928a870e3cc8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/bgourlie/hexthing:/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] d8e586d50972301a42533cf5d874b965af9b0fb411e17e4692106b91918828a5
[INFO] running `"docker" "start" "-a" "d8e586d50972301a42533cf5d874b965af9b0fb411e17e4692106b91918828a5"`
[INFO] [stderr]    Compiling hexthing v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "d8e586d50972301a42533cf5d874b965af9b0fb411e17e4692106b91918828a5"`
[INFO] running `"docker" "rm" "-f" "d8e586d50972301a42533cf5d874b965af9b0fb411e17e4692106b91918828a5"`
[INFO] [stdout] d8e586d50972301a42533cf5d874b965af9b0fb411e17e4692106b91918828a5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/bgourlie/hexthing:/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] dbaa75422346ff37f88577dedddffa992cbc3d6a43903cd2900ad907fa7cf387
[INFO] running `"docker" "start" "-a" "dbaa75422346ff37f88577dedddffa992cbc3d6a43903cd2900ad907fa7cf387"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hexthing-492c14268ddf094f
[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" "dbaa75422346ff37f88577dedddffa992cbc3d6a43903cd2900ad907fa7cf387"`
[INFO] running `"docker" "rm" "-f" "dbaa75422346ff37f88577dedddffa992cbc3d6a43903cd2900ad907fa7cf387"`
[INFO] [stdout] dbaa75422346ff37f88577dedddffa992cbc3d6a43903cd2900ad907fa7cf387