Dec 05 08:53:27.535 INFO checking proc-macro-hack-0.5.1 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 08:53:27.536 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 08:53:27.739 INFO [stdout] b0edf9ede123d37f5f66df59e1a2935e5c01c34b297be4072718d0427cbd7bd0
Dec 05 08:53:27.745 INFO running `"docker" "start" "-a" "b0edf9ede123d37f5f66df59e1a2935e5c01c34b297be4072718d0427cbd7bd0"`
Dec 05 08:53:28.375 INFO [stderr] usermod: no changes
Dec 05 08:53:28.409 INFO [stderr]    Compiling proc-macro-hack v0.5.3
Dec 05 08:53:28.412 INFO [stderr]     Checking proc-macro-hack v0.5.1 (/source)
Dec 05 08:53:29.367 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 08:53:29.367 INFO [stderr]    --> src/lib.rs:425:5
Dec 05 08:53:29.367 INFO [stderr]     |
Dec 05 08:53:29.367 INFO [stderr] 425 |     write!(dummy, "_{}{}", export.from.to_string().len(), export.from);
Dec 05 08:53:29.367 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:53:29.367 INFO [stderr]     |
Dec 05 08:53:29.367 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 08:53:29.367 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 08:53:29.367 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 08:53:29.367 INFO [stderr] 
Dec 05 08:53:29.367 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 08:53:29.367 INFO [stderr]    --> src/lib.rs:427:9
Dec 05 08:53:29.367 INFO [stderr]     |
Dec 05 08:53:29.367 INFO [stderr] 427 |         write!(dummy, "_{}{}", m.name.to_string().len(), m.name);
Dec 05 08:53:29.367 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:53:29.367 INFO [stderr]     |
Dec 05 08:53:29.367 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 08:53:29.367 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 08:53:29.367 INFO [stderr] 
Dec 05 08:53:30.751 INFO [stderr]    Compiling demo-hack-impl v0.0.5
Dec 05 08:53:32.434 INFO [stderr]     Checking demo-hack v0.0.5
Dec 05 08:53:34.017 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 08:53:34.017 INFO [stderr]    --> src/lib.rs:425:5
Dec 05 08:53:34.017 INFO [stderr]     |
Dec 05 08:53:34.017 INFO [stderr] 425 |     write!(dummy, "_{}{}", export.from.to_string().len(), export.from);
Dec 05 08:53:34.017 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:53:34.017 INFO [stderr]     |
Dec 05 08:53:34.017 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 08:53:34.017 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 08:53:34.017 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 08:53:34.017 INFO [stderr] 
Dec 05 08:53:34.017 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 08:53:34.017 INFO [stderr]    --> src/lib.rs:427:9
Dec 05 08:53:34.017 INFO [stderr]     |
Dec 05 08:53:34.017 INFO [stderr] 427 |         write!(dummy, "_{}{}", m.name.to_string().len(), m.name);
Dec 05 08:53:34.017 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:53:34.017 INFO [stderr]     |
Dec 05 08:53:34.017 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 08:53:34.017 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 08:53:34.017 INFO [stderr] 
Dec 05 08:53:34.030 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.64s
Dec 05 08:53:34.032 INFO [stderr] su: No module specific data is present
Dec 05 08:53:34.310 INFO running `"docker" "inspect" "b0edf9ede123d37f5f66df59e1a2935e5c01c34b297be4072718d0427cbd7bd0"`
Dec 05 08:53:34.409 INFO running `"docker" "rm" "-f" "b0edf9ede123d37f5f66df59e1a2935e5c01c34b297be4072718d0427cbd7bd0"`
Dec 05 08:53:34.518 INFO [stdout] b0edf9ede123d37f5f66df59e1a2935e5c01c34b297be4072718d0427cbd7bd0