Dec 05 10:42:13.054 INFO checking mach_object-0.1.13 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 10:42:13.054 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 05 10:42:13.533 INFO [stdout] 587d20c6778acb43f2fb8959edf80e8aadf9d6b7223e622948dcf83ec5ebe094
Dec 05 10:42:13.535 INFO running `"docker" "start" "-a" "587d20c6778acb43f2fb8959edf80e8aadf9d6b7223e622948dcf83ec5ebe094"`
Dec 05 10:42:14.341 INFO [stderr] usermod: no changes
Dec 05 10:42:14.522 INFO [stderr]     Checking hexplay v0.2.1
Dec 05 10:42:14.522 INFO [stderr]     Checking mach_object v0.1.13 (/source)
Dec 05 10:42:19.115 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 10:42:19.115 INFO [stderr]    --> src/display.rs:461:17
Dec 05 10:42:19.115 INFO [stderr]     |
Dec 05 10:42:19.115 INFO [stderr] 461 |                 writeln!(f, "    tools");
Dec 05 10:42:19.115 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 10:42:19.115 INFO [stderr]     |
Dec 05 10:42:19.115 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 10:42:19.115 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 10:42:19.115 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)
Dec 05 10:42:19.115 INFO [stderr] 
Dec 05 10:42:23.311 INFO [stderr] warning: unused `#[macro_use]` import
Dec 05 10:42:23.311 INFO [stderr]  --> tests/integration_tests.rs:1:1
Dec 05 10:42:23.311 INFO [stderr]   |
Dec 05 10:42:23.311 INFO [stderr] 1 | #[macro_use]
Dec 05 10:42:23.311 INFO [stderr]   | ^^^^^^^^^^^^
Dec 05 10:42:23.311 INFO [stderr]   |
Dec 05 10:42:23.311 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 10:42:23.311 INFO [stderr] 
Dec 05 10:42:23.807 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 10:42:23.807 INFO [stderr]    --> src/display.rs:461:17
Dec 05 10:42:23.807 INFO [stderr]     |
Dec 05 10:42:23.807 INFO [stderr] 461 |                 writeln!(f, "    tools");
Dec 05 10:42:23.807 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 10:42:23.807 INFO [stderr]     |
Dec 05 10:42:23.807 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 10:42:23.807 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 10:42:23.807 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)
Dec 05 10:42:23.807 INFO [stderr] 
Dec 05 10:42:23.810 INFO [stderr] warning: unused `#[macro_use]` import
Dec 05 10:42:23.810 INFO [stderr]  --> examples/otool.rs:9:1
Dec 05 10:42:23.810 INFO [stderr]   |
Dec 05 10:42:23.810 INFO [stderr] 9 | #[macro_use]
Dec 05 10:42:23.810 INFO [stderr]   | ^^^^^^^^^^^^
Dec 05 10:42:23.810 INFO [stderr]   |
Dec 05 10:42:23.810 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 10:42:23.810 INFO [stderr] 
Dec 05 10:42:24.176 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.83s
Dec 05 10:42:24.183 INFO [stderr] su: No module specific data is present
Dec 05 10:42:24.405 INFO running `"docker" "inspect" "587d20c6778acb43f2fb8959edf80e8aadf9d6b7223e622948dcf83ec5ebe094"`
Dec 05 10:42:24.519 INFO running `"docker" "rm" "-f" "587d20c6778acb43f2fb8959edf80e8aadf9d6b7223e622948dcf83ec5ebe094"`
Dec 05 10:42:24.651 INFO [stdout] 587d20c6778acb43f2fb8959edf80e8aadf9d6b7223e622948dcf83ec5ebe094