[INFO] updating cached repository kubos/cargo-kubos
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kubos/cargo-kubos
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kubos/cargo-kubos" "work/ex/beta-1.38-1/sources/1.37.0/gh/kubos/cargo-kubos"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kubos/cargo-kubos'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kubos/cargo-kubos" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kubos/cargo-kubos"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kubos/cargo-kubos'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dd4dca6f07b22a183042897cf7cada48d17c8e0a
[INFO] sha for GitHub repo kubos/cargo-kubos: dd4dca6f07b22a183042897cf7cada48d17c8e0a
[INFO] validating manifest of kubos/cargo-kubos 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 kubos/cargo-kubos 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 kubos/cargo-kubos
[INFO] finished frobbing kubos/cargo-kubos
[INFO] frobbed toml for kubos/cargo-kubos written to work/ex/beta-1.38-1/sources/1.37.0/gh/kubos/cargo-kubos/Cargo.toml
[INFO] started frobbing kubos/cargo-kubos
[INFO] finished frobbing kubos/cargo-kubos
[INFO] frobbed toml for kubos/cargo-kubos written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kubos/cargo-kubos/Cargo.toml
[INFO] crate kubos/cargo-kubos 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kubos/cargo-kubos against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kubos/cargo-kubos:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ed60b180a141e2a323416f0c71eaad9940bbd11a7177fa7328004dfdb226dfbd
[INFO] running `"docker" "start" "-a" "ed60b180a141e2a323416f0c71eaad9940bbd11a7177fa7328004dfdb226dfbd"`
[INFO] [stderr]    Compiling getopts v0.2.15
[INFO] [stderr] warning[E0503]: cannot use `state` because it was mutably borrowed
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/getopts-0.2.15/src/lib.rs:1033:33
[INFO] [stderr]      |
[INFO] [stderr] 978  |     let mut machine = |cont: &mut bool, (i, c): (usize, char)| {
[INFO] [stderr]      |                       ---------------------------------------- borrow of `state` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 982  |         state = match (state, whitespace, limit) {
[INFO] [stderr]      |                        ----- borrow occurs due to use of `state` in closure
[INFO] [stderr] ...
[INFO] [stderr] 1033 |     while cont && match state { B | C => true, A => false } {
[INFO] [stderr]      |                                 ^ use of borrowed `state`
[INFO] [stderr] 1034 |         machine(&mut cont, (fake_i, ' '));
[INFO] [stderr]      |         ------- 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]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling cargo-kubos v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `"docker" "inspect" "ed60b180a141e2a323416f0c71eaad9940bbd11a7177fa7328004dfdb226dfbd"`
[INFO] running `"docker" "rm" "-f" "ed60b180a141e2a323416f0c71eaad9940bbd11a7177fa7328004dfdb226dfbd"`
[INFO] [stdout] ed60b180a141e2a323416f0c71eaad9940bbd11a7177fa7328004dfdb226dfbd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kubos/cargo-kubos:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8e25bc8839df8a3aba72988c4e4658e6a7d36865ef435b0b9035ddc3413e25f3
[INFO] running `"docker" "start" "-a" "8e25bc8839df8a3aba72988c4e4658e6a7d36865ef435b0b9035ddc3413e25f3"`
[INFO] [stderr]    Compiling cargo-kubos v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "8e25bc8839df8a3aba72988c4e4658e6a7d36865ef435b0b9035ddc3413e25f3"`
[INFO] running `"docker" "rm" "-f" "8e25bc8839df8a3aba72988c4e4658e6a7d36865ef435b0b9035ddc3413e25f3"`
[INFO] [stdout] 8e25bc8839df8a3aba72988c4e4658e6a7d36865ef435b0b9035ddc3413e25f3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/kubos/cargo-kubos:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 6f25c4e653a3d47a345e63841830955820912a2fce7a4276cbecb9eea6114a38
[INFO] running `"docker" "start" "-a" "6f25c4e653a3d47a345e63841830955820912a2fce7a4276cbecb9eea6114a38"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_kubos-86de72869868a103
[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" "6f25c4e653a3d47a345e63841830955820912a2fce7a4276cbecb9eea6114a38"`
[INFO] running `"docker" "rm" "-f" "6f25c4e653a3d47a345e63841830955820912a2fce7a4276cbecb9eea6114a38"`
[INFO] [stdout] 6f25c4e653a3d47a345e63841830955820912a2fce7a4276cbecb9eea6114a38