Dec 11 15:50:21.438 INFO checking k3d3/Roam against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 15:50:21.438 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 15:50:21.852 INFO [stdout] d08bb7151b8514c877904aacc3690d8f5cc83a0f020ced4fc337d2fd2b11ef1d
Dec 11 15:50:21.858 INFO running `"docker" "start" "-a" "d08bb7151b8514c877904aacc3690d8f5cc83a0f020ced4fc337d2fd2b11ef1d"`
Dec 11 15:50:22.872 INFO [stderr] usermod: no changes
Dec 11 15:50:23.017 INFO [stderr]    Compiling gcc v0.3.43
Dec 11 15:50:23.017 INFO [stderr]     Checking futures v0.1.10
Dec 11 15:50:23.018 INFO [stderr]     Checking base64 v0.4.0
Dec 11 15:50:23.020 INFO [stderr]     Checking mio v0.6.4
Dec 11 15:50:27.524 INFO [stderr]    Compiling backtrace-sys v0.1.10
Dec 11 15:50:27.524 INFO [stderr]    Compiling rust-crypto v0.2.36
Dec 11 15:50:28.032 INFO [stderr]     Checking tokio-service v0.1.0
Dec 11 15:50:28.169 INFO [stderr]     Checking tokio-core v0.1.4
Dec 11 15:50:32.305 INFO [stderr]     Checking tokio-proto v0.1.0
Dec 11 15:50:47.197 INFO [stderr]     Checking backtrace v0.3.0
Dec 11 15:50:47.771 INFO [stderr]     Checking error-chain v0.10.0
Dec 11 15:50:48.542 INFO [stderr]     Checking roam v0.1.0 (/source)
Dec 11 15:50:50.376 INFO [stderr] warning: method is never used: `to_pretty_json`
Dec 11 15:50:50.376 INFO [stderr]   --> src/network_config.rs:56:5
Dec 11 15:50:50.376 INFO [stderr]    |
Dec 11 15:50:50.376 INFO [stderr] 56 |     pub fn to_pretty_json(&self) -> Result<String> {
Dec 11 15:50:50.376 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:50:50.376 INFO [stderr]    |
Dec 11 15:50:50.376 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 15:50:50.376 INFO [stderr] 
Dec 11 15:50:50.432 INFO [stderr] warning: method is never used: `to_json`
Dec 11 15:50:50.432 INFO [stderr]   --> src/network_config.rs:52:5
Dec 11 15:50:50.432 INFO [stderr]    |
Dec 11 15:50:50.432 INFO [stderr] 52 |     pub fn to_json(&self) -> Result<String> {
Dec 11 15:50:50.432 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:50:50.432 INFO [stderr]    |
Dec 11 15:50:50.432 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 15:50:50.432 INFO [stderr] 
Dec 11 15:50:50.432 INFO [stderr] warning: method is never used: `to_pretty_json`
Dec 11 15:50:50.432 INFO [stderr]   --> src/network_config.rs:56:5
Dec 11 15:50:50.432 INFO [stderr]    |
Dec 11 15:50:50.432 INFO [stderr] 56 |     pub fn to_pretty_json(&self) -> Result<String> {
Dec 11 15:50:50.432 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:50:50.432 INFO [stderr] 
Dec 11 15:50:50.464 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.57s
Dec 11 15:50:50.476 INFO [stderr] su: No module specific data is present
Dec 11 15:50:51.076 INFO running `"docker" "inspect" "d08bb7151b8514c877904aacc3690d8f5cc83a0f020ced4fc337d2fd2b11ef1d"`
Dec 11 15:50:51.244 INFO running `"docker" "rm" "-f" "d08bb7151b8514c877904aacc3690d8f5cc83a0f020ced4fc337d2fd2b11ef1d"`
Dec 11 15:50:51.564 INFO [stdout] d08bb7151b8514c877904aacc3690d8f5cc83a0f020ced4fc337d2fd2b11ef1d