[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/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/curliq/wordcloud-bot"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/curliq/wordcloud-bot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/curliq/wordcloud-bot" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/curliq/wordcloud-bot"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/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 master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of curliq/wordcloud-bot on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "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/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking curliq/wordcloud-bot against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-5/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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=forbid" "-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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6e4166f69c7b010f873d16cf276d9f31ad9318fc434ec61c698b17366b8653ec
[INFO] running `"docker" "start" "-a" "6e4166f69c7b010f873d16cf276d9f31ad9318fc434ec61c698b17366b8653ec"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking base64 v0.8.0
[INFO] [stderr]     Checking memchr v2.1.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking miniz-sys v0.1.11
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking openssl v0.9.24
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking flate2 v1.0.6
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking native-tls v0.1.5
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking env_logger v0.6.0
[INFO] [stderr]     Checking evzht9h3nznqzwl v0.0.3
[INFO] [stderr]     Checking hyper-native-tls v0.2.4
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking quickcheck v0.6.2
[INFO] [stderr]     Checking multipart v0.13.6
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking serenity v0.5.11
[INFO] [stderr]     Checking imageproc v0.17.0
[INFO] [stderr]     Checking 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 `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] 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 1m 26s
[INFO] running `"docker" "inspect" "6e4166f69c7b010f873d16cf276d9f31ad9318fc434ec61c698b17366b8653ec"`
[INFO] running `"docker" "rm" "-f" "6e4166f69c7b010f873d16cf276d9f31ad9318fc434ec61c698b17366b8653ec"`
[INFO] [stdout] 6e4166f69c7b010f873d16cf276d9f31ad9318fc434ec61c698b17366b8653ec