Dec 18 11:43:04.884 INFO checking rustfst-0.1.7 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 11:43:04.884 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/rustfst/0.1.7:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 11:43:05.055 INFO [stdout] a043d1b4354912052924c9a804fde1f2c62e6ecb4375aff34620090b6f6b414f
Dec 18 11:43:05.057 INFO running `"docker" "start" "-a" "a043d1b4354912052924c9a804fde1f2c62e6ecb4375aff34620090b6f6b414f"`
Dec 18 11:43:05.960 INFO [stderr]     Checking counter v0.4.3
Dec 18 11:43:05.964 INFO [stderr]     Checking rustfst v0.1.7 (/opt/crater/workdir)
Dec 18 11:43:07.441 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:07.441 INFO [stderr]    --> src/fst_impls/vector_fst/vector_fst.rs:198:1
Dec 18 11:43:07.441 INFO [stderr]     |
Dec 18 11:43:07.441 INFO [stderr] 198 | display_fst!(W, VectorFst<W>);
Dec 18 11:43:07.441 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:07.441 INFO [stderr]     |
Dec 18 11:43:07.441 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 11:43:07.441 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:07.441 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 18 11:43:07.441 INFO [stderr] 
Dec 18 11:43:07.441 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:07.441 INFO [stderr]   --> src/semirings/boolean_weight.rs:42:1
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr] 42 | display_semiring!(BooleanWeight);
Dec 18 11:43:07.441 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:07.441 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 18 11:43:07.441 INFO [stderr] 
Dec 18 11:43:07.441 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:07.441 INFO [stderr]   --> src/semirings/integer_weight.rs:46:1
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr] 46 | display_semiring!(IntegerWeight);
Dec 18 11:43:07.441 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:07.441 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 18 11:43:07.441 INFO [stderr] 
Dec 18 11:43:07.441 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:07.441 INFO [stderr]   --> src/semirings/log_weight.rs:67:1
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr] 67 | display_semiring!(LogWeight);
Dec 18 11:43:07.441 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:07.441 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 18 11:43:07.441 INFO [stderr] 
Dec 18 11:43:07.441 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:07.441 INFO [stderr]   --> src/semirings/probability_weight.rs:44:1
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr] 44 | display_semiring!(ProbabilityWeight);
Dec 18 11:43:07.441 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:07.441 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 18 11:43:07.441 INFO [stderr] 
Dec 18 11:43:07.441 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:07.441 INFO [stderr]   --> src/semirings/tropical_weight.rs:57:1
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr] 57 | display_semiring!(TropicalWeight);
Dec 18 11:43:07.441 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:07.441 INFO [stderr]    |
Dec 18 11:43:07.441 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:07.441 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 18 11:43:07.441 INFO [stderr] 
Dec 18 11:43:08.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:08.268 INFO [stderr]    --> src/fst_impls/vector_fst/vector_fst.rs:198:1
Dec 18 11:43:08.268 INFO [stderr]     |
Dec 18 11:43:08.268 INFO [stderr] 198 | display_fst!(W, VectorFst<W>);
Dec 18 11:43:08.268 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:08.268 INFO [stderr]     |
Dec 18 11:43:08.268 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 11:43:08.268 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:08.268 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 18 11:43:08.268 INFO [stderr] 
Dec 18 11:43:08.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:08.268 INFO [stderr]   --> src/semirings/boolean_weight.rs:42:1
Dec 18 11:43:08.268 INFO [stderr]    |
Dec 18 11:43:08.268 INFO [stderr] 42 | display_semiring!(BooleanWeight);
Dec 18 11:43:08.268 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:08.268 INFO [stderr]    |
Dec 18 11:43:08.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:08.268 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 18 11:43:08.268 INFO [stderr] 
Dec 18 11:43:08.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:08.268 INFO [stderr]   --> src/semirings/integer_weight.rs:46:1
Dec 18 11:43:08.268 INFO [stderr]    |
Dec 18 11:43:08.268 INFO [stderr] 46 | display_semiring!(IntegerWeight);
Dec 18 11:43:08.268 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:08.268 INFO [stderr]    |
Dec 18 11:43:08.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:08.268 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 18 11:43:08.268 INFO [stderr] 
Dec 18 11:43:08.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:08.268 INFO [stderr]   --> src/semirings/log_weight.rs:67:1
Dec 18 11:43:08.268 INFO [stderr]    |
Dec 18 11:43:08.268 INFO [stderr] 67 | display_semiring!(LogWeight);
Dec 18 11:43:08.268 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:08.268 INFO [stderr]    |
Dec 18 11:43:08.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:08.268 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 18 11:43:08.268 INFO [stderr] 
Dec 18 11:43:08.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:08.268 INFO [stderr]   --> src/semirings/probability_weight.rs:44:1
Dec 18 11:43:08.268 INFO [stderr]    |
Dec 18 11:43:08.268 INFO [stderr] 44 | display_semiring!(ProbabilityWeight);
Dec 18 11:43:08.268 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:08.268 INFO [stderr]    |
Dec 18 11:43:08.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:08.268 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 18 11:43:08.268 INFO [stderr] 
Dec 18 11:43:08.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:43:08.269 INFO [stderr]   --> src/semirings/tropical_weight.rs:57:1
Dec 18 11:43:08.269 INFO [stderr]    |
Dec 18 11:43:08.269 INFO [stderr] 57 | display_semiring!(TropicalWeight);
Dec 18 11:43:08.269 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
Dec 18 11:43:08.269 INFO [stderr]    |
Dec 18 11:43:08.269 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:43:08.269 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 18 11:43:08.269 INFO [stderr] 
Dec 18 11:43:08.313 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.43s
Dec 18 11:43:09.031 INFO running `"docker" "inspect" "a043d1b4354912052924c9a804fde1f2c62e6ecb4375aff34620090b6f6b414f"`
Dec 18 11:43:09.423 INFO running `"docker" "rm" "-f" "a043d1b4354912052924c9a804fde1f2c62e6ecb4375aff34620090b6f6b414f"`
Dec 18 11:43:09.704 INFO [stdout] a043d1b4354912052924c9a804fde1f2c62e6ecb4375aff34620090b6f6b414f