Dec 12 11:37:25.568 INFO checking maze-0.1.2 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 11:37:25.568 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 11:37:25.725 INFO [stdout] 2f736f5000b3d03abbe6035f544084b0b3abc7540506815ca39b737eab463344
Dec 12 11:37:25.729 INFO running `"docker" "start" "-a" "2f736f5000b3d03abbe6035f544084b0b3abc7540506815ca39b737eab463344"`
Dec 12 11:37:26.166 INFO [stderr] usermod: no changes
Dec 12 11:37:26.459 INFO [stderr]     Checking css-color-parser v0.1.2
Dec 12 11:37:26.459 INFO [stderr]    Compiling syn v0.10.8
Dec 12 11:37:26.465 INFO [stderr]     Checking png v0.5.2
Dec 12 11:37:26.466 INFO [stderr]     Checking hyper v0.9.12
Dec 12 11:37:26.466 INFO [stderr]     Checking nalgebra v0.5.1
Dec 12 11:37:26.466 INFO [stderr]     Checking quickcheck v0.2.27
Dec 12 11:37:30.244 INFO [stderr]     Checking image v0.10.4
Dec 12 11:37:35.243 INFO [stderr]    Compiling serde_codegen_internals v0.11.3
Dec 12 11:37:37.200 INFO [stderr]     Checking iron v0.4.0
Dec 12 11:37:39.694 INFO [stderr]    Compiling serde_codegen v0.8.23
Dec 12 11:37:42.921 INFO [stderr]     Checking imageproc v0.6.1
Dec 12 11:37:46.544 INFO [stderr]     Checking persistent v0.2.1
Dec 12 11:37:46.708 INFO [stderr]     Checking router v0.4.0
Dec 12 11:37:47.160 INFO [stderr]    Compiling serde_derive v0.8.23
Dec 12 11:37:52.152 INFO [stderr]     Checking bodyparser v0.4.1
Dec 12 11:37:57.036 INFO [stderr]     Checking urlencoded v0.4.1
Dec 12 11:38:00.693 INFO [stderr]     Checking maze v0.1.2 (/source)
Dec 12 11:38:10.985 INFO [stderr] warning: variable does not need to be mutable
Dec 12 11:38:10.985 INFO [stderr]    --> src/types/grid.rs:191:13
Dec 12 11:38:10.985 INFO [stderr]     |
Dec 12 11:38:10.985 INFO [stderr] 191 |         let mut grid = self;
Dec 12 11:38:10.985 INFO [stderr]     |             ----^^^^
Dec 12 11:38:10.985 INFO [stderr]     |             |
Dec 12 11:38:10.985 INFO [stderr]     |             help: remove this `mut`
Dec 12 11:38:10.985 INFO [stderr]     |
Dec 12 11:38:10.985 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 11:38:10.985 INFO [stderr] 
Dec 12 11:38:11.009 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 12 11:38:11.009 INFO [stderr]  --> src/lib.rs:2:12
Dec 12 11:38:11.009 INFO [stderr]   |
Dec 12 11:38:11.009 INFO [stderr] 2 | #![feature(proc_macro)]
Dec 12 11:38:11.009 INFO [stderr]   |            ^^^^^^^^^^
Dec 12 11:38:11.009 INFO [stderr]   |
Dec 12 11:38:11.009 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 11:38:11.009 INFO [stderr] 
Dec 12 11:38:11.567 INFO [stderr] warning: variable does not need to be mutable
Dec 12 11:38:11.567 INFO [stderr]    --> src/types/grid.rs:191:13
Dec 12 11:38:11.567 INFO [stderr]     |
Dec 12 11:38:11.567 INFO [stderr] 191 |         let mut grid = self;
Dec 12 11:38:11.567 INFO [stderr]     |             ----^^^^
Dec 12 11:38:11.567 INFO [stderr]     |             |
Dec 12 11:38:11.567 INFO [stderr]     |             help: remove this `mut`
Dec 12 11:38:11.567 INFO [stderr]     |
Dec 12 11:38:11.567 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 11:38:11.567 INFO [stderr] 
Dec 12 11:38:11.608 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 12 11:38:11.608 INFO [stderr]  --> src/lib.rs:2:12
Dec 12 11:38:11.608 INFO [stderr]   |
Dec 12 11:38:11.608 INFO [stderr] 2 | #![feature(proc_macro)]
Dec 12 11:38:11.608 INFO [stderr]   |            ^^^^^^^^^^
Dec 12 11:38:11.608 INFO [stderr]   |
Dec 12 11:38:11.608 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 11:38:11.608 INFO [stderr] 
Dec 12 11:38:21.432 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.24s
Dec 12 11:38:21.459 INFO [stderr] su: No module specific data is present
Dec 12 11:38:21.918 INFO running `"docker" "inspect" "2f736f5000b3d03abbe6035f544084b0b3abc7540506815ca39b737eab463344"`
Dec 12 11:38:22.022 INFO running `"docker" "rm" "-f" "2f736f5000b3d03abbe6035f544084b0b3abc7540506815ca39b737eab463344"`
Dec 12 11:38:22.287 INFO [stdout] 2f736f5000b3d03abbe6035f544084b0b3abc7540506815ca39b737eab463344