Dec 04 14:02:36.023 INFO checking mitoma/rust_simple_http_server against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 14:02:36.023 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 14:02:36.215 INFO [stdout] 319524c6e3d436dd1854e0e9712405a804af1878bcde645e70bd0f4e845cb6ac
Dec 04 14:02:36.219 INFO running `"docker" "start" "-a" "319524c6e3d436dd1854e0e9712405a804af1878bcde645e70bd0f4e845cb6ac"`
Dec 04 14:02:37.007 INFO [stderr] usermod: no changes
Dec 04 14:02:37.067 INFO [stderr]     Checking rust_simple_http_server v0.1.0 (/source)
Dec 04 14:02:37.435 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:02:37.435 INFO [stderr]   --> src/main.rs:13:9
Dec 04 14:02:37.435 INFO [stderr]    |
Dec 04 14:02:37.435 INFO [stderr] 13 |         stream.map(echo);
Dec 04 14:02:37.435 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^
Dec 04 14:02:37.435 INFO [stderr]    |
Dec 04 14:02:37.435 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 14:02:37.435 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:02:37.435 INFO [stderr] 
Dec 04 14:02:37.495 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:02:37.495 INFO [stderr]   --> src/main.rs:13:9
Dec 04 14:02:37.495 INFO [stderr]    |
Dec 04 14:02:37.495 INFO [stderr] 13 |         stream.map(echo);
Dec 04 14:02:37.495 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^
Dec 04 14:02:37.495 INFO [stderr]    |
Dec 04 14:02:37.495 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 14:02:37.495 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:02:37.495 INFO [stderr] 
Dec 04 14:02:37.522 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
Dec 04 14:02:37.529 INFO [stderr] su: No module specific data is present
Dec 04 14:02:38.205 INFO running `"docker" "inspect" "319524c6e3d436dd1854e0e9712405a804af1878bcde645e70bd0f4e845cb6ac"`
Dec 04 14:02:38.541 INFO running `"docker" "rm" "-f" "319524c6e3d436dd1854e0e9712405a804af1878bcde645e70bd0f4e845cb6ac"`
Dec 04 14:02:38.815 INFO [stdout] 319524c6e3d436dd1854e0e9712405a804af1878bcde645e70bd0f4e845cb6ac