Dec 12 15:37:53.980 INFO checking dweet-0.1.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 15:37:53.980 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 15:37:54.260 INFO [stdout] bb3c528ec6206b516594c03e8d0c6a991251feb6de2df905625a64bf275e9c2f
Dec 12 15:37:54.266 INFO running `"docker" "start" "-a" "bb3c528ec6206b516594c03e8d0c6a991251feb6de2df905625a64bf275e9c2f"`
Dec 12 15:37:55.092 INFO [stderr] usermod: no changes
Dec 12 15:37:55.252 INFO [stderr]     Checking dweet v0.1.0 (/source)
Dec 12 15:37:58.227 INFO [stderr] warning: unused variable: `res`
Dec 12 15:37:58.227 INFO [stderr]   --> src/lib.rs:27:13
Dec 12 15:37:58.227 INFO [stderr]    |
Dec 12 15:37:58.227 INFO [stderr] 27 |         let res = client.post(&url).header(ContentType::json()).body(&json_string).send().unwrap();
Dec 12 15:37:58.227 INFO [stderr]    |             ^^^ help: consider using `_res` instead
Dec 12 15:37:58.227 INFO [stderr]    |
Dec 12 15:37:58.228 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 15:37:58.228 INFO [stderr] 
Dec 12 15:37:58.267 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 15:37:58.267 INFO [stderr]   --> src/lib.rs:35:9
Dec 12 15:37:58.267 INFO [stderr]    |
Dec 12 15:37:58.268 INFO [stderr] 35 |         res.read_to_string(&mut json_data);
Dec 12 15:37:58.268 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 15:37:58.268 INFO [stderr]    |
Dec 12 15:37:58.269 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 15:37:58.269 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 15:37:58.269 INFO [stderr] 
Dec 12 15:37:58.513 INFO [stderr] warning: unused variable: `res`
Dec 12 15:37:58.513 INFO [stderr]   --> src/lib.rs:27:13
Dec 12 15:37:58.514 INFO [stderr]    |
Dec 12 15:37:58.514 INFO [stderr] 27 |         let res = client.post(&url).header(ContentType::json()).body(&json_string).send().unwrap();
Dec 12 15:37:58.514 INFO [stderr]    |             ^^^ help: consider using `_res` instead
Dec 12 15:37:58.515 INFO [stderr]    |
Dec 12 15:37:58.515 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 15:37:58.515 INFO [stderr] 
Dec 12 15:37:58.529 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 15:37:58.529 INFO [stderr]   --> src/lib.rs:35:9
Dec 12 15:37:58.530 INFO [stderr]    |
Dec 12 15:37:58.530 INFO [stderr] 35 |         res.read_to_string(&mut json_data);
Dec 12 15:37:58.530 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 15:37:58.530 INFO [stderr]    |
Dec 12 15:37:58.531 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 15:37:58.531 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 15:37:58.531 INFO [stderr] 
Dec 12 15:37:58.589 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.47s
Dec 12 15:37:58.605 INFO [stderr] su: No module specific data is present
Dec 12 15:37:59.106 INFO running `"docker" "inspect" "bb3c528ec6206b516594c03e8d0c6a991251feb6de2df905625a64bf275e9c2f"`
Dec 12 15:37:59.250 INFO running `"docker" "rm" "-f" "bb3c528ec6206b516594c03e8d0c6a991251feb6de2df905625a64bf275e9c2f"`
Dec 12 15:37:59.413 INFO [stdout] bb3c528ec6206b516594c03e8d0c6a991251feb6de2df905625a64bf275e9c2f