Dec 18 08:14:27.573 INFO checking CHAM0/client-server against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 08:14:27.573 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/CHAM0/client-server:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:14:28.174 INFO [stdout] c6287990853009e9082d1d2aa3f8424458dbf33f1897c32e129292e1e370fe82
Dec 18 08:14:28.176 INFO running `"docker" "start" "-a" "c6287990853009e9082d1d2aa3f8424458dbf33f1897c32e129292e1e370fe82"`
Dec 18 08:14:30.428 INFO [stderr]     Checking serde_json v1.0.26
Dec 18 08:14:30.428 INFO [stderr]    Compiling serde_derive v1.0.74
Dec 18 08:14:47.050 INFO [stderr]     Checking tokio_test v0.1.0 (/opt/crater/workdir)
Dec 18 08:14:47.892 INFO [stderr] warning: unused import: `Error`
Dec 18 08:14:47.893 INFO [stderr]  --> src/client/main.rs:5:25
Dec 18 08:14:47.893 INFO [stderr]   |
Dec 18 08:14:47.893 INFO [stderr] 5 | use serde_json::{Value, Error};
Dec 18 08:14:47.894 INFO [stderr]   |                         ^^^^^
Dec 18 08:14:47.894 INFO [stderr]   |
Dec 18 08:14:47.894 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:14:47.895 INFO [stderr] 
Dec 18 08:14:48.056 INFO [stderr] warning: unused import: `Error`
Dec 18 08:14:48.056 INFO [stderr]  --> src/client/main.rs:5:25
Dec 18 08:14:48.056 INFO [stderr]   |
Dec 18 08:14:48.056 INFO [stderr] 5 | use serde_json::{Value, Error};
Dec 18 08:14:48.056 INFO [stderr]   |                         ^^^^^
Dec 18 08:14:48.056 INFO [stderr]   |
Dec 18 08:14:48.056 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:14:48.056 INFO [stderr] 
Dec 18 08:14:49.058 INFO [stderr] warning: unused variable: `j2`
Dec 18 08:14:49.058 INFO [stderr]   --> src/server/main.rs:37:17
Dec 18 08:14:49.059 INFO [stderr]    |
Dec 18 08:14:49.059 INFO [stderr] 37 |             let j2 = serde_json::to_string(&tata);
Dec 18 08:14:49.059 INFO [stderr]    |                 ^^ help: consider using `_j2` instead
Dec 18 08:14:49.060 INFO [stderr]    |
Dec 18 08:14:49.060 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 08:14:49.060 INFO [stderr] 
Dec 18 08:14:49.100 INFO [stderr] warning: unused variable: `j2`
Dec 18 08:14:49.100 INFO [stderr]   --> src/server/main.rs:37:17
Dec 18 08:14:49.100 INFO [stderr]    |
Dec 18 08:14:49.100 INFO [stderr] 37 |             let j2 = serde_json::to_string(&tata);
Dec 18 08:14:49.100 INFO [stderr]    |                 ^^ help: consider using `_j2` instead
Dec 18 08:14:49.100 INFO [stderr]    |
Dec 18 08:14:49.100 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 08:14:49.101 INFO [stderr] 
Dec 18 08:14:49.307 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.04s
Dec 18 08:14:50.893 INFO running `"docker" "inspect" "c6287990853009e9082d1d2aa3f8424458dbf33f1897c32e129292e1e370fe82"`
Dec 18 08:14:51.178 INFO running `"docker" "rm" "-f" "c6287990853009e9082d1d2aa3f8424458dbf33f1897c32e129292e1e370fe82"`
Dec 18 08:14:51.482 INFO [stdout] c6287990853009e9082d1d2aa3f8424458dbf33f1897c32e129292e1e370fe82