Dec 04 08:18:20.321 INFO checking tomwhoiscontrary/isots against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 08:18:20.322 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 08:18:20.839 INFO [stdout] 934f1eee6f36a0860567859e059c345963ba8f7390a1abb88317cb541d0c5e4f
Dec 04 08:18:20.842 INFO running `"docker" "start" "-a" "934f1eee6f36a0860567859e059c345963ba8f7390a1abb88317cb541d0c5e4f"`
Dec 04 08:18:22.361 INFO [stderr] usermod: no changes
Dec 04 08:18:22.466 INFO [stderr]     Checking isots v0.1.0 (/source)
Dec 04 08:18:22.957 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 08:18:22.957 INFO [stderr]    --> src/main.rs:149:9
Dec 04 08:18:22.957 INFO [stderr]     |
Dec 04 08:18:22.957 INFO [stderr] 149 | /         write!(out,
Dec 04 08:18:22.957 INFO [stderr] 150 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}Z",
Dec 04 08:18:22.957 INFO [stderr] 151 | |                time.year(),
Dec 04 08:18:22.957 INFO [stderr] 152 | |                time.month(),
Dec 04 08:18:22.957 INFO [stderr] ...   |
Dec 04 08:18:22.957 INFO [stderr] 155 | |                time.minute(),
Dec 04 08:18:22.957 INFO [stderr] 156 | |                time.second());
Dec 04 08:18:22.957 INFO [stderr]     | |______________________________^
Dec 04 08:18:22.957 INFO [stderr]     |
Dec 04 08:18:22.957 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 08:18:22.957 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 08:18:22.957 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 04 08:18:22.957 INFO [stderr] 
Dec 04 08:18:22.957 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 08:18:22.957 INFO [stderr]    --> src/main.rs:158:9
Dec 04 08:18:22.957 INFO [stderr]     |
Dec 04 08:18:22.957 INFO [stderr] 158 | /         write!(out,
Dec 04 08:18:22.957 INFO [stderr] 159 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}.{:0width$}Z",
Dec 04 08:18:22.957 INFO [stderr] 160 | |                time.year(),
Dec 04 08:18:22.957 INFO [stderr] 161 | |                time.month(),
Dec 04 08:18:22.957 INFO [stderr] ...   |
Dec 04 08:18:22.957 INFO [stderr] 166 | |                time.nanosecond(),
Dec 04 08:18:22.957 INFO [stderr] 167 | |                width = fractional_seconds_digits);
Dec 04 08:18:22.957 INFO [stderr]     | |__________________________________________________^
Dec 04 08:18:22.957 INFO [stderr]     |
Dec 04 08:18:22.957 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 08:18:22.957 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 04 08:18:22.957 INFO [stderr] 
Dec 04 08:18:23.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 08:18:23.019 INFO [stderr]    --> src/main.rs:149:9
Dec 04 08:18:23.019 INFO [stderr]     |
Dec 04 08:18:23.019 INFO [stderr] 149 | /         write!(out,
Dec 04 08:18:23.019 INFO [stderr] 150 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}Z",
Dec 04 08:18:23.019 INFO [stderr] 151 | |                time.year(),
Dec 04 08:18:23.019 INFO [stderr] 152 | |                time.month(),
Dec 04 08:18:23.019 INFO [stderr] ...   |
Dec 04 08:18:23.019 INFO [stderr] 155 | |                time.minute(),
Dec 04 08:18:23.019 INFO [stderr] 156 | |                time.second());
Dec 04 08:18:23.019 INFO [stderr]     | |______________________________^
Dec 04 08:18:23.019 INFO [stderr]     |
Dec 04 08:18:23.019 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 08:18:23.019 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 08:18:23.019 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 04 08:18:23.019 INFO [stderr] 
Dec 04 08:18:23.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 08:18:23.019 INFO [stderr]    --> src/main.rs:158:9
Dec 04 08:18:23.019 INFO [stderr]     |
Dec 04 08:18:23.019 INFO [stderr] 158 | /         write!(out,
Dec 04 08:18:23.019 INFO [stderr] 159 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}.{:0width$}Z",
Dec 04 08:18:23.019 INFO [stderr] 160 | |                time.year(),
Dec 04 08:18:23.019 INFO [stderr] 161 | |                time.month(),
Dec 04 08:18:23.019 INFO [stderr] ...   |
Dec 04 08:18:23.019 INFO [stderr] 166 | |                time.nanosecond(),
Dec 04 08:18:23.019 INFO [stderr] 167 | |                width = fractional_seconds_digits);
Dec 04 08:18:23.019 INFO [stderr]     | |__________________________________________________^
Dec 04 08:18:23.019 INFO [stderr]     |
Dec 04 08:18:23.019 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 08:18:23.019 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 04 08:18:23.019 INFO [stderr] 
Dec 04 08:18:23.059 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
Dec 04 08:18:23.062 INFO [stderr] su: No module specific data is present
Dec 04 08:18:23.691 INFO running `"docker" "inspect" "934f1eee6f36a0860567859e059c345963ba8f7390a1abb88317cb541d0c5e4f"`
Dec 04 08:18:24.089 INFO running `"docker" "rm" "-f" "934f1eee6f36a0860567859e059c345963ba8f7390a1abb88317cb541d0c5e4f"`
Dec 04 08:18:24.519 INFO [stdout] 934f1eee6f36a0860567859e059c345963ba8f7390a1abb88317cb541d0c5e4f