Nov 28 02:30:30.144 INFO checking kevlarr/rusty-calc against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 02:30:30.145 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-1/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 28 02:30:30.565 INFO [stdout] 2e5b04b0346704d8772b9860f1db5864a98728348647bc1f640edb451770dc72
Nov 28 02:30:30.570 INFO running `"docker" "start" "-a" "2e5b04b0346704d8772b9860f1db5864a98728348647bc1f640edb451770dc72"`
Nov 28 02:30:31.532 INFO [stderr] usermod: no changes
Nov 28 02:30:31.568 INFO [stderr]     Checking rustycalc v0.1.0 (/source)
Nov 28 02:30:32.076 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 02:30:32.076 INFO [stderr]    --> src/types/binary.rs:111:9
Nov 28 02:30:32.076 INFO [stderr]     |
Nov 28 02:30:32.076 INFO [stderr] 111 |         write!(f, "0b");
Nov 28 02:30:32.076 INFO [stderr]     |         ^^^^^^^^^^^^^^^^
Nov 28 02:30:32.076 INFO [stderr]     |
Nov 28 02:30:32.076 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 02:30:32.076 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 02:30:32.076 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 02:30:32.076 INFO [stderr] 
Nov 28 02:30:32.076 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 02:30:32.076 INFO [stderr]    --> src/types/binary.rs:115:17
Nov 28 02:30:32.076 INFO [stderr]     |
Nov 28 02:30:32.076 INFO [stderr] 115 |                 write!(f, "_");
Nov 28 02:30:32.076 INFO [stderr]     |                 ^^^^^^^^^^^^^^^
Nov 28 02:30:32.076 INFO [stderr]     |
Nov 28 02:30:32.076 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 02:30:32.076 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 02:30:32.076 INFO [stderr] 
Nov 28 02:30:32.469 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 02:30:32.470 INFO [stderr]    --> src/types/binary.rs:111:9
Nov 28 02:30:32.470 INFO [stderr]     |
Nov 28 02:30:32.470 INFO [stderr] 111 |         write!(f, "0b");
Nov 28 02:30:32.470 INFO [stderr]     |         ^^^^^^^^^^^^^^^^
Nov 28 02:30:32.470 INFO [stderr]     |
Nov 28 02:30:32.470 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 02:30:32.470 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 02:30:32.482 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 02:30:32.482 INFO [stderr] 
Nov 28 02:30:32.482 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 02:30:32.482 INFO [stderr]    --> src/types/binary.rs:115:17
Nov 28 02:30:32.482 INFO [stderr]     |
Nov 28 02:30:32.482 INFO [stderr] 115 |                 write!(f, "_");
Nov 28 02:30:32.482 INFO [stderr]     |                 ^^^^^^^^^^^^^^^
Nov 28 02:30:32.482 INFO [stderr]     |
Nov 28 02:30:32.482 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 02:30:32.482 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 02:30:32.482 INFO [stderr] 
Nov 28 02:30:32.796 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
Nov 28 02:30:32.796 INFO [stderr] su: No module specific data is present
Nov 28 02:30:33.552 INFO running `"docker" "inspect" "2e5b04b0346704d8772b9860f1db5864a98728348647bc1f640edb451770dc72"`
Nov 28 02:30:34.022 INFO running `"docker" "rm" "-f" "2e5b04b0346704d8772b9860f1db5864a98728348647bc1f640edb451770dc72"`
Nov 28 02:30:34.372 INFO [stdout] 2e5b04b0346704d8772b9860f1db5864a98728348647bc1f640edb451770dc72