[INFO] updating cached repository KeenS/100dices
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/KeenS/100dices
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/KeenS/100dices" "work/ex/beta-1.37-6/sources/1.36.0/gh/KeenS/100dices"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/KeenS/100dices'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/KeenS/100dices" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/KeenS/100dices"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/KeenS/100dices'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 75585cf9c8c62591212cae77646e4c91d43082ec
[INFO] sha for GitHub repo KeenS/100dices: 75585cf9c8c62591212cae77646e4c91d43082ec
[INFO] validating manifest of KeenS/100dices 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 KeenS/100dices 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 KeenS/100dices
[INFO] finished frobbing KeenS/100dices
[INFO] frobbed toml for KeenS/100dices written to work/ex/beta-1.37-6/sources/1.36.0/gh/KeenS/100dices/Cargo.toml
[INFO] started frobbing KeenS/100dices
[INFO] finished frobbing KeenS/100dices
[INFO] frobbed toml for KeenS/100dices written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/KeenS/100dices/Cargo.toml
[INFO] crate KeenS/100dices 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/KeenS/100dices/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[INFO] the lockfile is outdated, regenerating it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" "+1.36.0" "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 KeenS/100dices 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-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/KeenS/100dices:/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] 4e1ab944714fd4aaf8ac680c434d7c6f82c290e1efb4cd9f9d47935a30304790
[INFO] running `"docker" "start" "-a" "4e1ab944714fd4aaf8ac680c434d7c6f82c290e1efb4cd9f9d47935a30304790"`
[INFO] [stderr]    Compiling 100dices v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:30:32
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     Ok((tries, mut v)) => {
[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 1.68s
[INFO] running `"docker" "inspect" "4e1ab944714fd4aaf8ac680c434d7c6f82c290e1efb4cd9f9d47935a30304790"`
[INFO] running `"docker" "rm" "-f" "4e1ab944714fd4aaf8ac680c434d7c6f82c290e1efb4cd9f9d47935a30304790"`
[INFO] [stdout] 4e1ab944714fd4aaf8ac680c434d7c6f82c290e1efb4cd9f9d47935a30304790
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/KeenS/100dices:/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] 8c4b39f1fd30c1c786051a0452ba2542b1d08116106899ee3f0b9d5895fbc9ee
[INFO] running `"docker" "start" "-a" "8c4b39f1fd30c1c786051a0452ba2542b1d08116106899ee3f0b9d5895fbc9ee"`
[INFO] [stderr]    Compiling 100dices v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:30:32
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     Ok((tries, mut v)) => {
[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" "8c4b39f1fd30c1c786051a0452ba2542b1d08116106899ee3f0b9d5895fbc9ee"`
[INFO] running `"docker" "rm" "-f" "8c4b39f1fd30c1c786051a0452ba2542b1d08116106899ee3f0b9d5895fbc9ee"`
[INFO] [stdout] 8c4b39f1fd30c1c786051a0452ba2542b1d08116106899ee3f0b9d5895fbc9ee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/KeenS/100dices:/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] d6eb932461ca34967e4a38df6fc9bb648af93538e83e4a150d673a0ebdff1c9e
[INFO] running `"docker" "start" "-a" "d6eb932461ca34967e4a38df6fc9bb648af93538e83e4a150d673a0ebdff1c9e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/100dices-53f8f4d8dbab3622
[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" "d6eb932461ca34967e4a38df6fc9bb648af93538e83e4a150d673a0ebdff1c9e"`
[INFO] running `"docker" "rm" "-f" "d6eb932461ca34967e4a38df6fc9bb648af93538e83e4a150d673a0ebdff1c9e"`
[INFO] [stdout] d6eb932461ca34967e4a38df6fc9bb648af93538e83e4a150d673a0ebdff1c9e