Dec 12 03:35:05.258 INFO checking CHAM0/client-server against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 03:35:05.258 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 03:35:05.662 INFO [stdout] 5ccbfbe4b5d1cb271d5f9425246908248f71a888884928b19afdcd84744c55c2
Dec 12 03:35:05.667 INFO running `"docker" "start" "-a" "5ccbfbe4b5d1cb271d5f9425246908248f71a888884928b19afdcd84744c55c2"`
Dec 12 03:35:06.738 INFO [stderr] usermod: no changes
Dec 12 03:35:06.958 INFO [stderr]     Checking tokio-io v0.1.7
Dec 12 03:35:06.958 INFO [stderr]     Checking serde_json v1.0.26
Dec 12 03:35:06.972 INFO [stderr]     Checking tokio-threadpool v0.1.5
Dec 12 03:35:09.490 INFO [stderr]     Checking tokio-codec v0.1.0
Dec 12 03:35:09.490 INFO [stderr]     Checking tokio-reactor v0.1.3
Dec 12 03:35:10.637 INFO [stderr]     Checking tokio-fs v0.1.3
Dec 12 03:35:13.298 INFO [stderr]     Checking tokio-tcp v0.1.1
Dec 12 03:35:13.305 INFO [stderr]     Checking tokio-udp v0.1.1
Dec 12 03:35:16.049 INFO [stderr]     Checking tokio v0.1.7
Dec 12 03:35:18.233 INFO [stderr]     Checking tokio_test v0.1.0 (/source)
Dec 12 03:35:19.408 INFO [stderr] warning: unused import: `Error`
Dec 12 03:35:19.408 INFO [stderr]  --> src/client/main.rs:5:25
Dec 12 03:35:19.408 INFO [stderr]   |
Dec 12 03:35:19.408 INFO [stderr] 5 | use serde_json::{Value, Error};
Dec 12 03:35:19.408 INFO [stderr]   |                         ^^^^^
Dec 12 03:35:19.408 INFO [stderr]   |
Dec 12 03:35:19.408 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:35:19.408 INFO [stderr] 
Dec 12 03:35:19.884 INFO [stderr] warning: unused import: `Error`
Dec 12 03:35:19.884 INFO [stderr]  --> src/client/main.rs:5:25
Dec 12 03:35:19.884 INFO [stderr]   |
Dec 12 03:35:19.884 INFO [stderr] 5 | use serde_json::{Value, Error};
Dec 12 03:35:19.884 INFO [stderr]   |                         ^^^^^
Dec 12 03:35:19.912 INFO [stderr]   |
Dec 12 03:35:19.912 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:35:19.912 INFO [stderr] 
Dec 12 03:35:23.608 INFO [stderr] warning: unused variable: `j2`
Dec 12 03:35:23.608 INFO [stderr]   --> src/server/main.rs:37:17
Dec 12 03:35:23.608 INFO [stderr]    |
Dec 12 03:35:23.608 INFO [stderr] 37 |             let j2 = serde_json::to_string(&tata);
Dec 12 03:35:23.608 INFO [stderr]    |                 ^^ help: consider using `_j2` instead
Dec 12 03:35:23.608 INFO [stderr]    |
Dec 12 03:35:23.608 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 03:35:23.608 INFO [stderr] 
Dec 12 03:35:23.617 INFO [stderr] warning: unused variable: `j2`
Dec 12 03:35:23.617 INFO [stderr]   --> src/server/main.rs:37:17
Dec 12 03:35:23.617 INFO [stderr]    |
Dec 12 03:35:23.617 INFO [stderr] 37 |             let j2 = serde_json::to_string(&tata);
Dec 12 03:35:23.617 INFO [stderr]    |                 ^^ help: consider using `_j2` instead
Dec 12 03:35:23.617 INFO [stderr]    |
Dec 12 03:35:23.617 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 03:35:23.617 INFO [stderr] 
Dec 12 03:35:23.773 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.99s
Dec 12 03:35:23.781 INFO [stderr] su: No module specific data is present
Dec 12 03:35:24.970 INFO running `"docker" "inspect" "5ccbfbe4b5d1cb271d5f9425246908248f71a888884928b19afdcd84744c55c2"`
Dec 12 03:35:25.300 INFO running `"docker" "rm" "-f" "5ccbfbe4b5d1cb271d5f9425246908248f71a888884928b19afdcd84744c55c2"`
Dec 12 03:35:25.608 INFO [stdout] 5ccbfbe4b5d1cb271d5f9425246908248f71a888884928b19afdcd84744c55c2