[INFO] updating cached repository tilda/rusty-bot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tilda/rusty-bot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tilda/rusty-bot" "work/ex/beta-1.38-1/sources/1.37.0/gh/tilda/rusty-bot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/tilda/rusty-bot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tilda/rusty-bot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tilda/rusty-bot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tilda/rusty-bot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ab689e34cf1f7f035755bd9576ffe4d1ef2a259
[INFO] sha for GitHub repo tilda/rusty-bot: 8ab689e34cf1f7f035755bd9576ffe4d1ef2a259
[INFO] validating manifest of tilda/rusty-bot 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 tilda/rusty-bot 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 tilda/rusty-bot
[INFO] finished frobbing tilda/rusty-bot
[INFO] frobbed toml for tilda/rusty-bot written to work/ex/beta-1.38-1/sources/1.37.0/gh/tilda/rusty-bot/Cargo.toml
[INFO] started frobbing tilda/rusty-bot
[INFO] finished frobbing tilda/rusty-bot
[INFO] frobbed toml for tilda/rusty-bot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tilda/rusty-bot/Cargo.toml
[INFO] crate tilda/rusty-bot 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 tilda/rusty-bot 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tilda/rusty-bot:/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] 60d1165cb34a6f0b02585667f673fe51f0cc0aedc92cef439c70c1a9180f1726
[INFO] running `"docker" "start" "-a" "60d1165cb34a6f0b02585667f673fe51f0cc0aedc92cef439c70c1a9180f1726"`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling serde v1.0.65
[INFO] [stderr]    Compiling slog v2.2.3
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling trackable v0.2.17
[INFO] [stderr]    Compiling openssl-sys v0.9.31
[INFO] [stderr]    Compiling proc-macro2 v0.4.4
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling base64 v0.8.0
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr]    Compiling slog-scope v4.0.1
[INFO] [stderr]    Compiling slog-async v2.3.0
[INFO] [stderr]    Compiling flate2 v1.0.1
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling slog-stdlog v3.0.2
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling mime_guess v1.8.4
[INFO] [stderr]    Compiling parking_lot v0.5.5
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling hyper v0.10.13
[INFO] [stderr]    Compiling syn v0.14.1
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.65
[INFO] [stderr]    Compiling multipart v0.13.6
[INFO] [stderr]    Compiling evzht9h3nznqzwl v0.0.3
[INFO] [stderr]    Compiling hyper-native-tls v0.2.4
[INFO] [stderr]    Compiling chrono v0.4.2
[INFO] [stderr]    Compiling serde_json v1.0.19
[INFO] [stderr]    Compiling slog-term v2.4.0
[INFO] [stderr]    Compiling sloggers v0.2.6
[INFO] [stderr]    Compiling serenity v0.5.3
[INFO] [stderr]    Compiling rusty v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let mut file = File::open("config.json").expect("Not found");
[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 2m 20s
[INFO] running `"docker" "inspect" "60d1165cb34a6f0b02585667f673fe51f0cc0aedc92cef439c70c1a9180f1726"`
[INFO] running `"docker" "rm" "-f" "60d1165cb34a6f0b02585667f673fe51f0cc0aedc92cef439c70c1a9180f1726"`
[INFO] [stdout] 60d1165cb34a6f0b02585667f673fe51f0cc0aedc92cef439c70c1a9180f1726
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tilda/rusty-bot:/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] ef2bf80acc6efc82770f137060492638bb8454d72c956113f067c902389f381f
[INFO] running `"docker" "start" "-a" "ef2bf80acc6efc82770f137060492638bb8454d72c956113f067c902389f381f"`
[INFO] [stderr]    Compiling rusty v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let mut file = File::open("config.json").expect("Not found");
[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 1.69s
[INFO] running `"docker" "inspect" "ef2bf80acc6efc82770f137060492638bb8454d72c956113f067c902389f381f"`
[INFO] running `"docker" "rm" "-f" "ef2bf80acc6efc82770f137060492638bb8454d72c956113f067c902389f381f"`
[INFO] [stdout] ef2bf80acc6efc82770f137060492638bb8454d72c956113f067c902389f381f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tilda/rusty-bot:/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] 7bd96ed3b43c344536224df3614392646c2c141b8a5cfc1389f4943439f3c8d5
[INFO] running `"docker" "start" "-a" "7bd96ed3b43c344536224df3614392646c2c141b8a5cfc1389f4943439f3c8d5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rusty-3fb729bf05f41dff
[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" "7bd96ed3b43c344536224df3614392646c2c141b8a5cfc1389f4943439f3c8d5"`
[INFO] running `"docker" "rm" "-f" "7bd96ed3b43c344536224df3614392646c2c141b8a5cfc1389f4943439f3c8d5"`
[INFO] [stdout] 7bd96ed3b43c344536224df3614392646c2c141b8a5cfc1389f4943439f3c8d5