Dec 18 09:17:44.233 INFO checking welle-0.1.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 09:17:44.233 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/welle/0.1.0:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 09:17:44.503 INFO [stdout] 177e185f0d0fd18e02b23cf548e1f670cfebb3a0b98de8ffcb7184b474b7998c
Dec 18 09:17:44.512 INFO running `"docker" "start" "-a" "177e185f0d0fd18e02b23cf548e1f670cfebb3a0b98de8ffcb7184b474b7998c"`
Dec 18 09:17:46.580 INFO [stderr]     Checking hyper v0.12.18
Dec 18 09:17:50.705 INFO [stderr]     Checking hyper-tls v0.3.1
Dec 18 09:17:51.805 INFO [stderr]     Checking reqwest v0.9.5
Dec 18 09:17:53.820 INFO [stderr]     Checking welle v0.1.0 (/opt/crater/workdir)
Dec 18 09:17:56.696 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:17:56.696 INFO [stderr]    --> src/main.rs:204:9
Dec 18 09:17:56.696 INFO [stderr]     |
Dec 18 09:17:56.696 INFO [stderr] 204 |         writeln!(f, "");
Dec 18 09:17:56.696 INFO [stderr]     |         ^^^^^^^^^^^^^^^^
Dec 18 09:17:56.696 INFO [stderr]     |
Dec 18 09:17:56.696 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 09:17:56.696 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:17:56.696 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 09:17:56.696 INFO [stderr] 
Dec 18 09:17:56.716 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:17:56.716 INFO [stderr]    --> src/main.rs:213:9
Dec 18 09:17:56.716 INFO [stderr]     |
Dec 18 09:17:56.716 INFO [stderr] 213 |         writeln!(f, "");
Dec 18 09:17:56.716 INFO [stderr]     |         ^^^^^^^^^^^^^^^^
Dec 18 09:17:56.716 INFO [stderr]     |
Dec 18 09:17:56.716 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:17:56.716 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 09:17:56.716 INFO [stderr] 
Dec 18 09:17:56.716 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:17:56.716 INFO [stderr]    --> src/main.rs:214:9
Dec 18 09:17:56.716 INFO [stderr]     |
Dec 18 09:17:56.716 INFO [stderr] 214 | /         writeln!(
Dec 18 09:17:56.716 INFO [stderr] 215 | |             f,
Dec 18 09:17:56.716 INFO [stderr] 216 | |             "Percentage of the requests served within a certain time:"
Dec 18 09:17:56.716 INFO [stderr] 217 | |         );
Dec 18 09:17:56.716 INFO [stderr]     | |__________^
Dec 18 09:17:56.716 INFO [stderr]     |
Dec 18 09:17:56.716 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:17:56.716 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 09:17:56.716 INFO [stderr] 
Dec 18 09:17:56.952 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:17:56.952 INFO [stderr]    --> src/main.rs:204:9
Dec 18 09:17:56.952 INFO [stderr]     |
Dec 18 09:17:56.952 INFO [stderr] 204 |         writeln!(f, "");
Dec 18 09:17:56.952 INFO [stderr]     |         ^^^^^^^^^^^^^^^^
Dec 18 09:17:56.952 INFO [stderr]     |
Dec 18 09:17:56.952 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 09:17:56.952 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:17:56.952 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 09:17:56.952 INFO [stderr] 
Dec 18 09:17:56.952 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:17:56.952 INFO [stderr]    --> src/main.rs:213:9
Dec 18 09:17:56.952 INFO [stderr]     |
Dec 18 09:17:56.952 INFO [stderr] 213 |         writeln!(f, "");
Dec 18 09:17:56.952 INFO [stderr]     |         ^^^^^^^^^^^^^^^^
Dec 18 09:17:56.952 INFO [stderr]     |
Dec 18 09:17:56.952 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:17:56.952 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 09:17:56.952 INFO [stderr] 
Dec 18 09:17:56.953 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:17:56.953 INFO [stderr]    --> src/main.rs:214:9
Dec 18 09:17:56.953 INFO [stderr]     |
Dec 18 09:17:56.953 INFO [stderr] 214 | /         writeln!(
Dec 18 09:17:56.953 INFO [stderr] 215 | |             f,
Dec 18 09:17:56.953 INFO [stderr] 216 | |             "Percentage of the requests served within a certain time:"
Dec 18 09:17:56.953 INFO [stderr] 217 | |         );
Dec 18 09:17:56.953 INFO [stderr]     | |__________^
Dec 18 09:17:56.953 INFO [stderr]     |
Dec 18 09:17:56.953 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:17:56.953 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 09:17:56.953 INFO [stderr] 
Dec 18 09:17:57.009 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.72s
Dec 18 09:17:57.896 INFO running `"docker" "inspect" "177e185f0d0fd18e02b23cf548e1f670cfebb3a0b98de8ffcb7184b474b7998c"`
Dec 18 09:17:58.170 INFO running `"docker" "rm" "-f" "177e185f0d0fd18e02b23cf548e1f670cfebb3a0b98de8ffcb7184b474b7998c"`
Dec 18 09:17:58.518 INFO [stdout] 177e185f0d0fd18e02b23cf548e1f670cfebb3a0b98de8ffcb7184b474b7998c