Nov 30 17:51:03.739 INFO checking proc-macro-hack-0.5.1 against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 17:51:03.739 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-4/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 30 17:51:04.232 INFO [stdout] 80fb8e92b5d16c752fcaa0548e313fee68f39af1e626572ddd8b4079755aab26
Nov 30 17:51:04.234 INFO running `"docker" "start" "-a" "80fb8e92b5d16c752fcaa0548e313fee68f39af1e626572ddd8b4079755aab26"`
Nov 30 17:51:05.835 INFO [stderr] usermod: no changes
Nov 30 17:51:05.920 INFO [stderr]     Checking syn v0.15.22
Nov 30 17:51:05.928 INFO [stderr]    Compiling proc-macro-hack v0.5.3
Nov 30 17:51:13.220 INFO [stderr]    Compiling demo-hack-impl v0.0.5
Nov 30 17:51:13.404 INFO [stderr]     Checking proc-macro-hack v0.5.1 (/source)
Nov 30 17:51:18.804 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 17:51:18.804 INFO [stderr]    --> src/lib.rs:425:5
Nov 30 17:51:18.804 INFO [stderr]     |
Nov 30 17:51:18.804 INFO [stderr] 425 |     write!(dummy, "_{}{}", export.from.to_string().len(), export.from);
Nov 30 17:51:18.804 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 17:51:18.804 INFO [stderr]     |
Nov 30 17:51:18.804 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 17:51:18.804 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 17:51:18.804 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 30 17:51:18.804 INFO [stderr] 
Nov 30 17:51:18.804 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 17:51:18.804 INFO [stderr]    --> src/lib.rs:427:9
Nov 30 17:51:18.804 INFO [stderr]     |
Nov 30 17:51:18.804 INFO [stderr] 427 |         write!(dummy, "_{}{}", m.name.to_string().len(), m.name);
Nov 30 17:51:18.804 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 17:51:18.804 INFO [stderr]     |
Nov 30 17:51:18.804 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 17:51:18.804 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 30 17:51:18.804 INFO [stderr] 
Nov 30 17:51:19.620 INFO [stderr]     Checking demo-hack v0.0.5
Nov 30 17:51:23.484 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 17:51:23.484 INFO [stderr]    --> src/lib.rs:425:5
Nov 30 17:51:23.484 INFO [stderr]     |
Nov 30 17:51:23.484 INFO [stderr] 425 |     write!(dummy, "_{}{}", export.from.to_string().len(), export.from);
Nov 30 17:51:23.484 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 17:51:23.484 INFO [stderr]     |
Nov 30 17:51:23.484 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 17:51:23.484 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 17:51:23.484 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 30 17:51:23.484 INFO [stderr] 
Nov 30 17:51:23.484 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 17:51:23.484 INFO [stderr]    --> src/lib.rs:427:9
Nov 30 17:51:23.484 INFO [stderr]     |
Nov 30 17:51:23.484 INFO [stderr] 427 |         write!(dummy, "_{}{}", m.name.to_string().len(), m.name);
Nov 30 17:51:23.484 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 17:51:23.484 INFO [stderr]     |
Nov 30 17:51:23.484 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 17:51:23.484 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 30 17:51:23.484 INFO [stderr] 
Nov 30 17:51:23.548 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.68s
Nov 30 17:51:23.556 INFO [stderr] su: No module specific data is present
Nov 30 17:51:24.308 INFO running `"docker" "inspect" "80fb8e92b5d16c752fcaa0548e313fee68f39af1e626572ddd8b4079755aab26"`
Nov 30 17:51:24.670 INFO running `"docker" "rm" "-f" "80fb8e92b5d16c752fcaa0548e313fee68f39af1e626572ddd8b4079755aab26"`
Nov 30 17:51:25.032 INFO [stdout] 80fb8e92b5d16c752fcaa0548e313fee68f39af1e626572ddd8b4079755aab26