Dec 19 20:35:35.474 INFO checking amedviediev/data-generator against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 20:35:35.474 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/amedviediev/data-generator:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:35:35.808 INFO [stdout] 30c6b270cc05b201631ba167c4fb84591b6080688ed91a6de8cffc654bfcf6d3
Dec 19 20:35:35.810 INFO running `"docker" "start" "-a" "30c6b270cc05b201631ba167c4fb84591b6080688ed91a6de8cffc654bfcf6d3"`
Dec 19 20:35:37.104 INFO [stderr]     Checking serde v1.0.47
Dec 19 20:35:37.108 INFO [stderr]     Checking Inflector v0.11.3
Dec 19 20:35:37.119 INFO [stderr]    Compiling serde_derive v1.0.50
Dec 19 20:35:37.119 INFO [stderr]     Checking indicatif v0.9.0
Dec 19 20:35:52.112 INFO [stderr]     Checking serde_json v1.0.17
Dec 19 20:35:52.112 INFO [stderr]     Checking chrono v0.4.2
Dec 19 20:35:54.188 INFO [stderr]     Checking data-generator v0.1.0 (/opt/crater/workdir)
Dec 19 20:35:55.357 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.357 INFO [stderr]   --> src/generator.rs:35:5
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr] 35 |     write!(file, "[");
Dec 19 20:35:55.357 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:35:55.357 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.357 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 20:35:55.357 INFO [stderr] 
Dec 19 20:35:55.357 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.357 INFO [stderr]   --> src/generator.rs:59:13
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr] 59 |             file.write(string.as_bytes());
Dec 19 20:35:55.357 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.357 INFO [stderr] 
Dec 19 20:35:55.357 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.357 INFO [stderr]   --> src/generator.rs:62:13
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr] 62 |             file.write(string.as_bytes());
Dec 19 20:35:55.357 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.357 INFO [stderr] 
Dec 19 20:35:55.357 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.357 INFO [stderr]   --> src/generator.rs:66:13
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr] 66 |             write!(file, ",");
Dec 19 20:35:55.357 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.357 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 20:35:55.357 INFO [stderr] 
Dec 19 20:35:55.357 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.357 INFO [stderr]   --> src/generator.rs:72:5
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr] 72 |     write!(file, "]");
Dec 19 20:35:55.357 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.357 INFO [stderr]    |
Dec 19 20:35:55.357 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.357 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 20:35:55.357 INFO [stderr] 
Dec 19 20:35:55.380 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.380 INFO [stderr]   --> src/generator.rs:35:5
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr] 35 |     write!(file, "[");
Dec 19 20:35:55.380 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:35:55.380 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.380 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 20:35:55.380 INFO [stderr] 
Dec 19 20:35:55.380 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.380 INFO [stderr]   --> src/generator.rs:59:13
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr] 59 |             file.write(string.as_bytes());
Dec 19 20:35:55.380 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.380 INFO [stderr] 
Dec 19 20:35:55.380 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.380 INFO [stderr]   --> src/generator.rs:62:13
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr] 62 |             file.write(string.as_bytes());
Dec 19 20:35:55.380 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.380 INFO [stderr] 
Dec 19 20:35:55.380 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.380 INFO [stderr]   --> src/generator.rs:66:13
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr] 66 |             write!(file, ",");
Dec 19 20:35:55.380 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.380 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 20:35:55.380 INFO [stderr] 
Dec 19 20:35:55.380 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:35:55.380 INFO [stderr]   --> src/generator.rs:72:5
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr] 72 |     write!(file, "]");
Dec 19 20:35:55.380 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 20:35:55.380 INFO [stderr]    |
Dec 19 20:35:55.380 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:35:55.380 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 20:35:55.380 INFO [stderr] 
Dec 19 20:35:57.769 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.83s
Dec 19 20:35:58.064 INFO running `"docker" "inspect" "30c6b270cc05b201631ba167c4fb84591b6080688ed91a6de8cffc654bfcf6d3"`
Dec 19 20:35:58.161 INFO running `"docker" "rm" "-f" "30c6b270cc05b201631ba167c4fb84591b6080688ed91a6de8cffc654bfcf6d3"`
Dec 19 20:35:58.281 INFO [stdout] 30c6b270cc05b201631ba167c4fb84591b6080688ed91a6de8cffc654bfcf6d3