Dec 19 18:24:53.434 INFO checking danielsonner/wk5-starter against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 18:24:53.434 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/danielsonner/wk5-starter:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 18:24:53.876 INFO [stdout] a51c0a425b64a7ba314ae8c3a0741b16fdb373bf64e415c0033bc4a0f956c8a5
Dec 19 18:24:53.878 INFO running `"docker" "start" "-a" "a51c0a425b64a7ba314ae8c3a0741b16fdb373bf64e415c0033bc4a0f956c8a5"`
Dec 19 18:24:55.417 INFO [stderr]     Checking wk5 v0.1.0 (/opt/crater/workdir)
Dec 19 18:24:55.864 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:24:55.864 INFO [stderr]   --> src/main.rs:13:5
Dec 19 18:24:55.864 INFO [stderr]    |
Dec 19 18:24:55.864 INFO [stderr] 13 |     std::io::stdout().flush();
Dec 19 18:24:55.864 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:24:55.864 INFO [stderr]    |
Dec 19 18:24:55.864 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 18:24:55.864 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:24:55.864 INFO [stderr] 
Dec 19 18:24:55.864 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:24:55.864 INFO [stderr]   --> src/main.rs:90:9
Dec 19 18:24:55.864 INFO [stderr]    |
Dec 19 18:24:55.864 INFO [stderr] 90 |         std::io::stdout().flush();
Dec 19 18:24:55.864 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:24:55.864 INFO [stderr]    |
Dec 19 18:24:55.864 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:24:55.864 INFO [stderr] 
Dec 19 18:24:56.036 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:24:56.036 INFO [stderr]   --> src/main.rs:13:5
Dec 19 18:24:56.036 INFO [stderr]    |
Dec 19 18:24:56.036 INFO [stderr] 13 |     std::io::stdout().flush();
Dec 19 18:24:56.036 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:24:56.036 INFO [stderr]    |
Dec 19 18:24:56.036 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 18:24:56.036 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:24:56.036 INFO [stderr] 
Dec 19 18:24:56.036 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:24:56.036 INFO [stderr]   --> src/main.rs:90:9
Dec 19 18:24:56.036 INFO [stderr]    |
Dec 19 18:24:56.036 INFO [stderr] 90 |         std::io::stdout().flush();
Dec 19 18:24:56.036 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:24:56.036 INFO [stderr]    |
Dec 19 18:24:56.036 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:24:56.036 INFO [stderr] 
Dec 19 18:24:56.095 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
Dec 19 18:24:56.816 INFO running `"docker" "inspect" "a51c0a425b64a7ba314ae8c3a0741b16fdb373bf64e415c0033bc4a0f956c8a5"`
Dec 19 18:24:57.164 INFO running `"docker" "rm" "-f" "a51c0a425b64a7ba314ae8c3a0741b16fdb373bf64e415c0033bc4a0f956c8a5"`
Dec 19 18:24:57.564 INFO [stdout] a51c0a425b64a7ba314ae8c3a0741b16fdb373bf64e415c0033bc4a0f956c8a5