[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/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/tilda/rusty-bot"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/tilda/rusty-bot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tilda/rusty-bot" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/tilda/rusty-bot"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/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 master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tilda/rusty-bot on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "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/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/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/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tilda/rusty-bot against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-3/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/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=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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 54e046e2c3494ddfd7be5099cb7860560aeea5cf9351dfbc59261bafa9b1f280
[INFO] running `"docker" "start" "-a" "54e046e2c3494ddfd7be5099cb7860560aeea5cf9351dfbc59261bafa9b1f280"`
[INFO] [stderr]    Compiling serde v1.0.65
[INFO] [stderr]     Checking slog v2.2.3
[INFO] [stderr]     Checking trackable v0.2.17
[INFO] [stderr]    Compiling openssl-sys v0.9.31
[INFO] [stderr]    Compiling proc-macro2 v0.4.4
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]     Checking phf v0.7.22
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]    Compiling mime_guess v1.8.4
[INFO] [stderr]     Checking slog-scope v4.0.1
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]     Checking hyper v0.10.13
[INFO] [stderr]     Checking slog-stdlog v3.0.2
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.1
[INFO] [stderr]     Checking multipart v0.13.6
[INFO] [stderr]     Checking native-tls v0.1.5
[INFO] [stderr]     Checking hyper-native-tls v0.2.4
[INFO] [stderr]     Checking evzht9h3nznqzwl v0.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.65
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]     Checking serde_json v1.0.19
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]     Checking serenity v0.5.3
[INFO] [stderr]     Checking sloggers v0.2.6
[INFO] [stderr]     Checking 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] 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 1m 14s
[INFO] running `"docker" "inspect" "54e046e2c3494ddfd7be5099cb7860560aeea5cf9351dfbc59261bafa9b1f280"`
[INFO] running `"docker" "rm" "-f" "54e046e2c3494ddfd7be5099cb7860560aeea5cf9351dfbc59261bafa9b1f280"`
[INFO] [stdout] 54e046e2c3494ddfd7be5099cb7860560aeea5cf9351dfbc59261bafa9b1f280