Dec 12 08:12:00.333 INFO checking rustfst-0.1.7 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 08:12:00.333 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 12 08:12:00.596 INFO [stdout] 6173388a2e831c9c7d61721af40f19a4a752d0f33608c099eaeee8dbc540e41c
Dec 12 08:12:00.604 INFO running `"docker" "start" "-a" "6173388a2e831c9c7d61721af40f19a4a752d0f33608c099eaeee8dbc540e41c"`
Dec 12 08:12:01.400 INFO [stderr] usermod: no changes
Dec 12 08:12:01.519 INFO [stderr]     Checking counter v0.4.3
Dec 12 08:12:01.519 INFO [stderr]     Checking rustfst v0.1.7 (/source)
Dec 12 08:12:04.043 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:04.044 INFO [stderr]    --> src/fst_impls/vector_fst/vector_fst.rs:198:1
Dec 12 08:12:04.044 INFO [stderr]     |
Dec 12 08:12:04.044 INFO [stderr] 198 | display_fst!(W, VectorFst<W>);
Dec 12 08:12:04.045 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:04.045 INFO [stderr]     |
Dec 12 08:12:04.045 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 12 08:12:04.045 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:04.045 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 12 08:12:04.045 INFO [stderr] 
Dec 12 08:12:04.045 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:04.045 INFO [stderr]   --> src/semirings/boolean_weight.rs:42:1
Dec 12 08:12:04.046 INFO [stderr]    |
Dec 12 08:12:04.046 INFO [stderr] 42 | display_semiring!(BooleanWeight);
Dec 12 08:12:04.046 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:04.046 INFO [stderr]    |
Dec 12 08:12:04.046 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:04.046 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 12 08:12:04.046 INFO [stderr] 
Dec 12 08:12:04.046 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:04.046 INFO [stderr]   --> src/semirings/integer_weight.rs:46:1
Dec 12 08:12:04.046 INFO [stderr]    |
Dec 12 08:12:04.046 INFO [stderr] 46 | display_semiring!(IntegerWeight);
Dec 12 08:12:04.046 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:04.046 INFO [stderr]    |
Dec 12 08:12:04.046 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:04.046 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 12 08:12:04.046 INFO [stderr] 
Dec 12 08:12:04.046 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:04.046 INFO [stderr]   --> src/semirings/log_weight.rs:67:1
Dec 12 08:12:04.046 INFO [stderr]    |
Dec 12 08:12:04.046 INFO [stderr] 67 | display_semiring!(LogWeight);
Dec 12 08:12:04.046 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:04.046 INFO [stderr]    |
Dec 12 08:12:04.046 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:04.046 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 12 08:12:04.046 INFO [stderr] 
Dec 12 08:12:04.046 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:04.046 INFO [stderr]   --> src/semirings/probability_weight.rs:44:1
Dec 12 08:12:04.046 INFO [stderr]    |
Dec 12 08:12:04.046 INFO [stderr] 44 | display_semiring!(ProbabilityWeight);
Dec 12 08:12:04.046 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:04.048 INFO [stderr]    |
Dec 12 08:12:04.048 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:04.048 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 12 08:12:04.048 INFO [stderr] 
Dec 12 08:12:04.048 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:04.048 INFO [stderr]   --> src/semirings/tropical_weight.rs:57:1
Dec 12 08:12:04.048 INFO [stderr]    |
Dec 12 08:12:04.048 INFO [stderr] 57 | display_semiring!(TropicalWeight);
Dec 12 08:12:04.048 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:04.048 INFO [stderr]    |
Dec 12 08:12:04.048 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:04.048 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 12 08:12:04.048 INFO [stderr] 
Dec 12 08:12:05.364 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:05.364 INFO [stderr]    --> src/fst_impls/vector_fst/vector_fst.rs:198:1
Dec 12 08:12:05.364 INFO [stderr]     |
Dec 12 08:12:05.364 INFO [stderr] 198 | display_fst!(W, VectorFst<W>);
Dec 12 08:12:05.364 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:05.364 INFO [stderr]     |
Dec 12 08:12:05.364 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 12 08:12:05.364 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:05.364 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 12 08:12:05.364 INFO [stderr] 
Dec 12 08:12:05.364 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:05.364 INFO [stderr]   --> src/semirings/boolean_weight.rs:42:1
Dec 12 08:12:05.364 INFO [stderr]    |
Dec 12 08:12:05.364 INFO [stderr] 42 | display_semiring!(BooleanWeight);
Dec 12 08:12:05.364 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:05.364 INFO [stderr]    |
Dec 12 08:12:05.364 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:05.364 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 12 08:12:05.364 INFO [stderr] 
Dec 12 08:12:05.367 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:05.367 INFO [stderr]   --> src/semirings/integer_weight.rs:46:1
Dec 12 08:12:05.367 INFO [stderr]    |
Dec 12 08:12:05.367 INFO [stderr] 46 | display_semiring!(IntegerWeight);
Dec 12 08:12:05.367 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:05.367 INFO [stderr]    |
Dec 12 08:12:05.367 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:05.367 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 12 08:12:05.367 INFO [stderr] 
Dec 12 08:12:05.367 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:05.367 INFO [stderr]   --> src/semirings/log_weight.rs:67:1
Dec 12 08:12:05.367 INFO [stderr]    |
Dec 12 08:12:05.367 INFO [stderr] 67 | display_semiring!(LogWeight);
Dec 12 08:12:05.367 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:05.367 INFO [stderr]    |
Dec 12 08:12:05.367 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:05.367 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 12 08:12:05.367 INFO [stderr] 
Dec 12 08:12:05.367 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:05.367 INFO [stderr]   --> src/semirings/probability_weight.rs:44:1
Dec 12 08:12:05.367 INFO [stderr]    |
Dec 12 08:12:05.367 INFO [stderr] 44 | display_semiring!(ProbabilityWeight);
Dec 12 08:12:05.367 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:05.367 INFO [stderr]    |
Dec 12 08:12:05.367 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:05.367 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 12 08:12:05.367 INFO [stderr] 
Dec 12 08:12:05.367 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:12:05.367 INFO [stderr]   --> src/semirings/tropical_weight.rs:57:1
Dec 12 08:12:05.367 INFO [stderr]    |
Dec 12 08:12:05.367 INFO [stderr] 57 | display_semiring!(TropicalWeight);
Dec 12 08:12:05.367 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 12 08:12:05.367 INFO [stderr]    |
Dec 12 08:12:05.367 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:12:05.367 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 12 08:12:05.367 INFO [stderr] 
Dec 12 08:12:05.408 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.97s
Dec 12 08:12:05.412 INFO [stderr] su: No module specific data is present
Dec 12 08:12:06.144 INFO running `"docker" "inspect" "6173388a2e831c9c7d61721af40f19a4a752d0f33608c099eaeee8dbc540e41c"`
Dec 12 08:12:06.446 INFO running `"docker" "rm" "-f" "6173388a2e831c9c7d61721af40f19a4a752d0f33608c099eaeee8dbc540e41c"`
Dec 12 08:12:06.648 INFO [stdout] 6173388a2e831c9c7d61721af40f19a4a752d0f33608c099eaeee8dbc540e41c