Dec 18 09:53:32.489 INFO checking twilio-0.1.2 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 09:53:32.489 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/twilio/0.1.2:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 09:53:33.030 INFO [stdout] 87198ccc80a7cf087399ee30dc430d4a2fcd787b46a861ce47df333a2b40bd20
Dec 18 09:53:33.031 INFO running `"docker" "start" "-a" "87198ccc80a7cf087399ee30dc430d4a2fcd787b46a861ce47df333a2b40bd20"`
Dec 18 09:53:35.540 INFO [stderr]     Checking error-chain v0.10.0
Dec 18 09:53:35.548 INFO [stderr]     Checking twilio v0.1.2 (/opt/crater/workdir)
Dec 18 09:53:36.229 INFO [stderr]     Checking dotenv v0.10.1
Dec 18 09:53:37.007 INFO [stderr] warning: variable does not need to be mutable
Dec 18 09:53:37.008 INFO [stderr]   --> src/lib.rs:72:13
Dec 18 09:53:37.008 INFO [stderr]    |
Dec 18 09:53:37.008 INFO [stderr] 72 |         let mut http_client = hyper::Client::with_connector(connector);
Dec 18 09:53:37.008 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 18 09:53:37.008 INFO [stderr]    |             |
Dec 18 09:53:37.008 INFO [stderr]    |             help: remove this `mut`
Dec 18 09:53:37.008 INFO [stderr]    |
Dec 18 09:53:37.008 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 09:53:37.008 INFO [stderr] 
Dec 18 09:53:38.881 INFO [stderr] warning: variable does not need to be mutable
Dec 18 09:53:38.882 INFO [stderr]   --> src/lib.rs:72:13
Dec 18 09:53:38.882 INFO [stderr]    |
Dec 18 09:53:38.882 INFO [stderr] 72 |         let mut http_client = hyper::Client::with_connector(connector);
Dec 18 09:53:38.882 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 18 09:53:38.882 INFO [stderr]    |             |
Dec 18 09:53:38.882 INFO [stderr]    |             help: remove this `mut`
Dec 18 09:53:38.882 INFO [stderr]    |
Dec 18 09:53:38.888 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 09:53:38.893 INFO [stderr] 
Dec 18 09:53:39.596 INFO [stderr] warning: unused import: `Call`
Dec 18 09:53:39.596 INFO [stderr]  --> examples/call.rs:2:21
Dec 18 09:53:39.596 INFO [stderr]   |
Dec 18 09:53:39.596 INFO [stderr] 2 | use twilio::{Client,Call,OutboundCall};
Dec 18 09:53:39.596 INFO [stderr]   |                     ^^^^
Dec 18 09:53:39.596 INFO [stderr]   |
Dec 18 09:53:39.596 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 09:53:39.596 INFO [stderr] 
Dec 18 09:53:39.805 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.43s
Dec 18 09:53:40.281 INFO running `"docker" "inspect" "87198ccc80a7cf087399ee30dc430d4a2fcd787b46a861ce47df333a2b40bd20"`
Dec 18 09:53:40.508 INFO running `"docker" "rm" "-f" "87198ccc80a7cf087399ee30dc430d4a2fcd787b46a861ce47df333a2b40bd20"`
Dec 18 09:53:40.808 INFO [stdout] 87198ccc80a7cf087399ee30dc430d4a2fcd787b46a861ce47df333a2b40bd20