Dec 19 21:43:51.307 INFO checking Tau5/legend against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:43:51.308 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/Tau5/legend:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:43:51.828 INFO [stdout] d0c77dcc99ee421a0a6bc443a444483023cacff8bd0b0369fc6c08710f69fcea
Dec 19 21:43:51.830 INFO running `"docker" "start" "-a" "d0c77dcc99ee421a0a6bc443a444483023cacff8bd0b0369fc6c08710f69fcea"`
Dec 19 21:43:53.575 INFO [stderr]    Compiling ears v0.5.1
Dec 19 21:43:53.629 INFO [stderr]    Compiling syn v0.15.8
Dec 19 21:43:53.629 INFO [stderr]     Checking pancurses v0.16.0
Dec 19 21:44:06.444 INFO [stderr]    Compiling serde_derive v1.0.79
Dec 19 21:44:20.200 INFO [stderr]     Checking legend v0.1.0 (/opt/crater/workdir)
Dec 19 21:44:21.807 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:44:21.807 INFO [stderr]    --> src/main.rs:329:21
Dec 19 21:44:21.807 INFO [stderr]     |
Dec 19 21:44:21.807 INFO [stderr] 329 |                     write!(writer, "{}", save_str);
Dec 19 21:44:21.807 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:44:21.807 INFO [stderr]     |
Dec 19 21:44:21.807 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 21:44:21.807 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:44:21.807 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 19 21:44:21.807 INFO [stderr] 
Dec 19 21:44:21.807 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:44:21.807 INFO [stderr]    --> src/main.rs:335:21
Dec 19 21:44:21.807 INFO [stderr]     |
Dec 19 21:44:21.807 INFO [stderr] 335 |                     write!(writer, "{}", save_str);
Dec 19 21:44:21.807 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:44:21.807 INFO [stderr]     |
Dec 19 21:44:21.807 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:44:21.807 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 19 21:44:21.807 INFO [stderr] 
Dec 19 21:44:21.807 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:44:21.807 INFO [stderr]    --> src/main.rs:362:21
Dec 19 21:44:21.807 INFO [stderr]     |
Dec 19 21:44:21.807 INFO [stderr] 362 |                     write!(writer, "{}", save_str);
Dec 19 21:44:21.807 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:44:21.807 INFO [stderr]     |
Dec 19 21:44:21.807 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:44:21.807 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 19 21:44:21.807 INFO [stderr] 
Dec 19 21:44:21.807 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:44:21.807 INFO [stderr]    --> src/main.rs:368:21
Dec 19 21:44:21.807 INFO [stderr]     |
Dec 19 21:44:21.807 INFO [stderr] 368 |                     write!(writer, "{}", save_str);
Dec 19 21:44:21.807 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:44:21.807 INFO [stderr]     |
Dec 19 21:44:21.807 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:44:21.807 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 19 21:44:21.807 INFO [stderr] 
Dec 19 21:44:21.936 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:44:21.936 INFO [stderr]    --> src/main.rs:329:21
Dec 19 21:44:21.936 INFO [stderr]     |
Dec 19 21:44:21.936 INFO [stderr] 329 |                     write!(writer, "{}", save_str);
Dec 19 21:44:21.936 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:44:21.936 INFO [stderr]     |
Dec 19 21:44:21.936 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 21:44:21.936 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:44:21.936 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 19 21:44:21.936 INFO [stderr] 
Dec 19 21:44:21.936 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:44:21.936 INFO [stderr]    --> src/main.rs:335:21
Dec 19 21:44:21.936 INFO [stderr]     |
Dec 19 21:44:21.936 INFO [stderr] 335 |                     write!(writer, "{}", save_str);
Dec 19 21:44:21.936 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:44:21.936 INFO [stderr]     |
Dec 19 21:44:21.936 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:44:21.937 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 19 21:44:21.937 INFO [stderr] 
Dec 19 21:44:21.937 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:44:21.937 INFO [stderr]    --> src/main.rs:362:21
Dec 19 21:44:21.937 INFO [stderr]     |
Dec 19 21:44:21.937 INFO [stderr] 362 |                     write!(writer, "{}", save_str);
Dec 19 21:44:21.937 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:44:21.937 INFO [stderr]     |
Dec 19 21:44:21.937 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:44:21.937 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 19 21:44:21.937 INFO [stderr] 
Dec 19 21:44:21.937 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:44:21.937 INFO [stderr]    --> src/main.rs:368:21
Dec 19 21:44:21.937 INFO [stderr]     |
Dec 19 21:44:21.937 INFO [stderr] 368 |                     write!(writer, "{}", save_str);
Dec 19 21:44:21.937 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:44:21.937 INFO [stderr]     |
Dec 19 21:44:21.937 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:44:21.937 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 19 21:44:21.937 INFO [stderr] 
Dec 19 21:44:22.007 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.61s
Dec 19 21:44:22.890 INFO running `"docker" "inspect" "d0c77dcc99ee421a0a6bc443a444483023cacff8bd0b0369fc6c08710f69fcea"`
Dec 19 21:44:23.150 INFO running `"docker" "rm" "-f" "d0c77dcc99ee421a0a6bc443a444483023cacff8bd0b0369fc6c08710f69fcea"`
Dec 19 21:44:23.404 INFO [stdout] d0c77dcc99ee421a0a6bc443a444483023cacff8bd0b0369fc6c08710f69fcea