[INFO] updating cached repository nrlsk/cistern
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nrlsk/cistern
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nrlsk/cistern" "work/ex/beta-1.38-1/sources/1.37.0/gh/nrlsk/cistern"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nrlsk/cistern'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nrlsk/cistern" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nrlsk/cistern"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nrlsk/cistern'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7ed3705620439db24b2834e1dc7080b7c353e5a6
[INFO] sha for GitHub repo nrlsk/cistern: 7ed3705620439db24b2834e1dc7080b7c353e5a6
[INFO] validating manifest of nrlsk/cistern 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 nrlsk/cistern 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 nrlsk/cistern
[INFO] finished frobbing nrlsk/cistern
[INFO] frobbed toml for nrlsk/cistern written to work/ex/beta-1.38-1/sources/1.37.0/gh/nrlsk/cistern/Cargo.toml
[INFO] started frobbing nrlsk/cistern
[INFO] finished frobbing nrlsk/cistern
[INFO] frobbed toml for nrlsk/cistern written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nrlsk/cistern/Cargo.toml
[INFO] crate nrlsk/cistern 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 nrlsk/cistern 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/nrlsk/cistern:/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] 8fe2016f596518bc5fe350890622016d937b80a97afa566351014df52f0f14f9
[INFO] running `"docker" "start" "-a" "8fe2016f596518bc5fe350890622016d937b80a97afa566351014df52f0f14f9"`
[INFO] [stderr]    Compiling cc v1.0.32
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling base64 v0.8.0
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]    Compiling openssl-sys v0.9.43
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling multipart v0.13.6
[INFO] [stderr]    Compiling flate2 v1.0.7
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling evzht9h3nznqzwl v0.0.3
[INFO] [stderr]    Compiling hyper-native-tls v0.2.4
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling structopt v0.2.15
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling dotenv v0.13.0
[INFO] [stderr]    Compiling serenity v0.5.13
[INFO] [stderr]    Compiling cistern_bot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let mut token: String;
[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/main.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut prefix: String;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 03s
[INFO] running `"docker" "inspect" "8fe2016f596518bc5fe350890622016d937b80a97afa566351014df52f0f14f9"`
[INFO] running `"docker" "rm" "-f" "8fe2016f596518bc5fe350890622016d937b80a97afa566351014df52f0f14f9"`
[INFO] [stdout] 8fe2016f596518bc5fe350890622016d937b80a97afa566351014df52f0f14f9
[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/nrlsk/cistern:/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] 1f71bb55f0594ac25f9cd620f4b47222140e8f3cf756a68ab2d941a7ee243414
[INFO] running `"docker" "start" "-a" "1f71bb55f0594ac25f9cd620f4b47222140e8f3cf756a68ab2d941a7ee243414"`
[INFO] [stderr]    Compiling cistern_bot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let mut token: String;
[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/main.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut prefix: String;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.40s
[INFO] running `"docker" "inspect" "1f71bb55f0594ac25f9cd620f4b47222140e8f3cf756a68ab2d941a7ee243414"`
[INFO] running `"docker" "rm" "-f" "1f71bb55f0594ac25f9cd620f4b47222140e8f3cf756a68ab2d941a7ee243414"`
[INFO] [stdout] 1f71bb55f0594ac25f9cd620f4b47222140e8f3cf756a68ab2d941a7ee243414
[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/nrlsk/cistern:/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] 0d6aa972508479a3cd6b14e90d0d7fff51a4c3049455be111f46edce967c7e99
[INFO] running `"docker" "start" "-a" "0d6aa972508479a3cd6b14e90d0d7fff51a4c3049455be111f46edce967c7e99"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cistern_bot-7d75bccfe95c6c1f
[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" "0d6aa972508479a3cd6b14e90d0d7fff51a4c3049455be111f46edce967c7e99"`
[INFO] running `"docker" "rm" "-f" "0d6aa972508479a3cd6b14e90d0d7fff51a4c3049455be111f46edce967c7e99"`
[INFO] [stdout] 0d6aa972508479a3cd6b14e90d0d7fff51a4c3049455be111f46edce967c7e99