[INFO] updating cached repository curliq/wordcloud-bot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/curliq/wordcloud-bot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/curliq/wordcloud-bot" "work/ex/beta-1.37-6/sources/1.36.0/gh/curliq/wordcloud-bot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/curliq/wordcloud-bot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/curliq/wordcloud-bot" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/curliq/wordcloud-bot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/curliq/wordcloud-bot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 594e44c0f882b258e905cc2bb7bf18d81c64326c
[INFO] sha for GitHub repo curliq/wordcloud-bot: 594e44c0f882b258e905cc2bb7bf18d81c64326c
[INFO] validating manifest of curliq/wordcloud-bot 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 curliq/wordcloud-bot 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 curliq/wordcloud-bot
[INFO] finished frobbing curliq/wordcloud-bot
[INFO] frobbed toml for curliq/wordcloud-bot written to work/ex/beta-1.37-6/sources/1.36.0/gh/curliq/wordcloud-bot/Cargo.toml
[INFO] started frobbing curliq/wordcloud-bot
[INFO] finished frobbing curliq/wordcloud-bot
[INFO] frobbed toml for curliq/wordcloud-bot written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/curliq/wordcloud-bot/Cargo.toml
[INFO] crate curliq/wordcloud-bot 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 curliq/wordcloud-bot against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/curliq/wordcloud-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 6f0eb3f111269a0c0f1ca0fdf4a12a282859bd39fafa1a6c1f00e80754e0ca4b
[INFO] running `"docker" "start" "-a" "6f0eb3f111269a0c0f1ca0fdf4a12a282859bd39fafa1a6c1f00e80754e0ca4b"`
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling openssl-sys v0.9.40
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr]    Compiling flate2 v1.0.6
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]    Compiling image v0.20.1
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling parking_lot v0.5.5
[INFO] [stderr]    Compiling hyper v0.10.15
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr]    Compiling evzht9h3nznqzwl v0.0.3
[INFO] [stderr]    Compiling hyper-native-tls v0.2.4
[INFO] [stderr]    Compiling multipart v0.13.6
[INFO] [stderr]    Compiling quickcheck v0.6.2
[INFO] [stderr]    Compiling serenity v0.5.11
[INFO] [stderr]    Compiling imageproc v0.17.0
[INFO] [stderr]    Compiling wordcloud-bot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable `keep_running` is assigned to, but never used
[INFO] [stderr]   --> src/commands/wordcloud.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let mut keep_running = true;
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr]    = note: consider using `_keep_running` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `keep_running` is never read
[INFO] [stderr]   --> src/commands/wordcloud.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |             keep_running = false;
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/commands/wordcloud.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let mut users_messages_ :Vec<&str> = vec!(
[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 15s
[INFO] running `"docker" "inspect" "6f0eb3f111269a0c0f1ca0fdf4a12a282859bd39fafa1a6c1f00e80754e0ca4b"`
[INFO] running `"docker" "rm" "-f" "6f0eb3f111269a0c0f1ca0fdf4a12a282859bd39fafa1a6c1f00e80754e0ca4b"`
[INFO] [stdout] 6f0eb3f111269a0c0f1ca0fdf4a12a282859bd39fafa1a6c1f00e80754e0ca4b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/curliq/wordcloud-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] b3df6050cc4523ce1458eb1e5731a2539236180cb72d3522bf0d6cf35b64ffa4
[INFO] running `"docker" "start" "-a" "b3df6050cc4523ce1458eb1e5731a2539236180cb72d3522bf0d6cf35b64ffa4"`
[INFO] [stderr]    Compiling wordcloud-bot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable `keep_running` is assigned to, but never used
[INFO] [stderr]   --> src/commands/wordcloud.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let mut keep_running = true;
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr]    = note: consider using `_keep_running` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `keep_running` is never read
[INFO] [stderr]   --> src/commands/wordcloud.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |             keep_running = false;
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/commands/wordcloud.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let mut users_messages_ :Vec<&str> = vec!(
[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 7.94s
[INFO] running `"docker" "inspect" "b3df6050cc4523ce1458eb1e5731a2539236180cb72d3522bf0d6cf35b64ffa4"`
[INFO] running `"docker" "rm" "-f" "b3df6050cc4523ce1458eb1e5731a2539236180cb72d3522bf0d6cf35b64ffa4"`
[INFO] [stdout] b3df6050cc4523ce1458eb1e5731a2539236180cb72d3522bf0d6cf35b64ffa4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/curliq/wordcloud-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] de898228a5caf74c5abaf2c496db189037291bda0a968dedcf6193b84a44f965
[INFO] running `"docker" "start" "-a" "de898228a5caf74c5abaf2c496db189037291bda0a968dedcf6193b84a44f965"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wordcloud_bot-034eb53c4e3843b9
[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" "de898228a5caf74c5abaf2c496db189037291bda0a968dedcf6193b84a44f965"`
[INFO] running `"docker" "rm" "-f" "de898228a5caf74c5abaf2c496db189037291bda0a968dedcf6193b84a44f965"`
[INFO] [stdout] de898228a5caf74c5abaf2c496db189037291bda0a968dedcf6193b84a44f965