Dec 11 20:29:15.730 INFO checking crazymerlyn/engine against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 20:29:15.730 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 11 20:29:16.104 INFO [stdout] 93c12f2b5f12fc223a39c437256c5e28ff7a047e239f3c6ffd1c9334b38e6441
Dec 11 20:29:16.107 INFO running `"docker" "start" "-a" "93c12f2b5f12fc223a39c437256c5e28ff7a047e239f3c6ffd1c9334b38e6441"`
Dec 11 20:29:17.235 INFO [stderr] usermod: no changes
Dec 11 20:29:17.280 INFO [stderr]     Checking engine v0.1.0 (/source)
Dec 11 20:29:18.124 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:29:18.124 INFO [stderr]    --> src/boxes.rs:106:13
Dec 11 20:29:18.124 INFO [stderr]     |
Dec 11 20:29:18.124 INFO [stderr] 106 |         let mut border_left = style.lookup("border-left-width", "border-width", &zero);
Dec 11 20:29:18.124 INFO [stderr]     |             ----^^^^^^^^^^^
Dec 11 20:29:18.124 INFO [stderr]     |             |
Dec 11 20:29:18.124 INFO [stderr]     |             help: remove this `mut`
Dec 11 20:29:18.124 INFO [stderr]     |
Dec 11 20:29:18.124 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 20:29:18.125 INFO [stderr] 
Dec 11 20:29:18.125 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:29:18.125 INFO [stderr]    --> src/boxes.rs:107:13
Dec 11 20:29:18.125 INFO [stderr]     |
Dec 11 20:29:18.125 INFO [stderr] 107 |         let mut border_right = style.lookup("border-right-width", "border-width", &zero);
Dec 11 20:29:18.125 INFO [stderr]     |             ----^^^^^^^^^^^^
Dec 11 20:29:18.125 INFO [stderr]     |             |
Dec 11 20:29:18.125 INFO [stderr]     |             help: remove this `mut`
Dec 11 20:29:18.125 INFO [stderr] 
Dec 11 20:29:18.125 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:29:18.125 INFO [stderr]    --> src/boxes.rs:109:13
Dec 11 20:29:18.125 INFO [stderr]     |
Dec 11 20:29:18.125 INFO [stderr] 109 |         let mut padding_left = style.lookup("padding-left", "padding", &zero);
Dec 11 20:29:18.125 INFO [stderr]     |             ----^^^^^^^^^^^^
Dec 11 20:29:18.125 INFO [stderr]     |             |
Dec 11 20:29:18.125 INFO [stderr]     |             help: remove this `mut`
Dec 11 20:29:18.125 INFO [stderr] 
Dec 11 20:29:18.125 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:29:18.125 INFO [stderr]    --> src/boxes.rs:110:13
Dec 11 20:29:18.125 INFO [stderr]     |
Dec 11 20:29:18.125 INFO [stderr] 110 |         let mut padding_right = style.lookup("padding-right", "padding", &zero);
Dec 11 20:29:18.125 INFO [stderr]     |             ----^^^^^^^^^^^^^
Dec 11 20:29:18.125 INFO [stderr]     |             |
Dec 11 20:29:18.125 INFO [stderr]     |             help: remove this `mut`
Dec 11 20:29:18.125 INFO [stderr] 
Dec 11 20:29:18.216 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:29:18.216 INFO [stderr]    --> src/boxes.rs:106:13
Dec 11 20:29:18.216 INFO [stderr]     |
Dec 11 20:29:18.216 INFO [stderr] 106 |         let mut border_left = style.lookup("border-left-width", "border-width", &zero);
Dec 11 20:29:18.216 INFO [stderr]     |             ----^^^^^^^^^^^
Dec 11 20:29:18.216 INFO [stderr]     |             |
Dec 11 20:29:18.216 INFO [stderr]     |             help: remove this `mut`
Dec 11 20:29:18.216 INFO [stderr]     |
Dec 11 20:29:18.216 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 20:29:18.216 INFO [stderr] 
Dec 11 20:29:18.216 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:29:18.216 INFO [stderr]    --> src/boxes.rs:107:13
Dec 11 20:29:18.217 INFO [stderr]     |
Dec 11 20:29:18.217 INFO [stderr] 107 |         let mut border_right = style.lookup("border-right-width", "border-width", &zero);
Dec 11 20:29:18.217 INFO [stderr]     |             ----^^^^^^^^^^^^
Dec 11 20:29:18.217 INFO [stderr]     |             |
Dec 11 20:29:18.217 INFO [stderr]     |             help: remove this `mut`
Dec 11 20:29:18.217 INFO [stderr] 
Dec 11 20:29:18.217 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:29:18.217 INFO [stderr]    --> src/boxes.rs:109:13
Dec 11 20:29:18.217 INFO [stderr]     |
Dec 11 20:29:18.217 INFO [stderr] 109 |         let mut padding_left = style.lookup("padding-left", "padding", &zero);
Dec 11 20:29:18.217 INFO [stderr]     |             ----^^^^^^^^^^^^
Dec 11 20:29:18.217 INFO [stderr]     |             |
Dec 11 20:29:18.217 INFO [stderr]     |             help: remove this `mut`
Dec 11 20:29:18.217 INFO [stderr] 
Dec 11 20:29:18.217 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:29:18.217 INFO [stderr]    --> src/boxes.rs:110:13
Dec 11 20:29:18.217 INFO [stderr]     |
Dec 11 20:29:18.217 INFO [stderr] 110 |         let mut padding_right = style.lookup("padding-right", "padding", &zero);
Dec 11 20:29:18.217 INFO [stderr]     |             ----^^^^^^^^^^^^^
Dec 11 20:29:18.217 INFO [stderr]     |             |
Dec 11 20:29:18.217 INFO [stderr]     |             help: remove this `mut`
Dec 11 20:29:18.217 INFO [stderr] 
Dec 11 20:29:18.276 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
Dec 11 20:29:18.276 INFO [stderr] su: No module specific data is present
Dec 11 20:29:19.024 INFO running `"docker" "inspect" "93c12f2b5f12fc223a39c437256c5e28ff7a047e239f3c6ffd1c9334b38e6441"`
Dec 11 20:29:19.194 INFO running `"docker" "rm" "-f" "93c12f2b5f12fc223a39c437256c5e28ff7a047e239f3c6ffd1c9334b38e6441"`
Dec 11 20:29:19.337 INFO [stdout] 93c12f2b5f12fc223a39c437256c5e28ff7a047e239f3c6ffd1c9334b38e6441