Dec 11 06:35:41.736 INFO checking vorner/jsonpp against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 06:35:41.736 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 06:35:42.220 INFO [stdout] 327b40cea8e4518476bd9d0aedc5e48c7d6cd1c3465c1ec50d5ce56eecd784da
Dec 11 06:35:42.228 INFO running `"docker" "start" "-a" "327b40cea8e4518476bd9d0aedc5e48c7d6cd1c3465c1ec50d5ce56eecd784da"`
Dec 11 06:35:43.715 INFO [stderr] usermod: no changes
Dec 11 06:35:43.872 INFO [stderr]     Checking serde v1.0.44
Dec 11 06:35:43.888 INFO [stderr]     Checking backtrace v0.3.6
Dec 11 06:35:44.667 INFO [stderr]     Checking failure v0.1.1
Dec 11 06:35:53.823 INFO [stderr]     Checking serde_json v1.0.17
Dec 11 06:35:56.004 INFO [stderr]     Checking jsonpp v0.1.0 (/source)
Dec 11 06:35:56.532 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.79s
Dec 11 06:35:56.539 INFO [stderr] su: No module specific data is present
Dec 11 06:35:57.697 INFO running `"docker" "inspect" "327b40cea8e4518476bd9d0aedc5e48c7d6cd1c3465c1ec50d5ce56eecd784da"`
Dec 11 06:35:58.002 INFO running `"docker" "rm" "-f" "327b40cea8e4518476bd9d0aedc5e48c7d6cd1c3465c1ec50d5ce56eecd784da"`
Dec 11 06:35:58.281 INFO [stdout] 327b40cea8e4518476bd9d0aedc5e48c7d6cd1c3465c1ec50d5ce56eecd784da