Dec 18 10:17:03.130 INFO checking time2-0.2.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 10:17:03.130 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/time2/0.2.0:/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 10:17:03.547 INFO [stdout] 5658a1369781e3ace05b52e7124176c1b17c4c60c8149eed359e85dee201a918
Dec 18 10:17:03.549 INFO running `"docker" "start" "-a" "5658a1369781e3ace05b52e7124176c1b17c4c60c8149eed359e85dee201a918"`
Dec 18 10:17:05.208 INFO [stderr]     Checking time2 v0.2.0 (/opt/crater/workdir)
Dec 18 10:17:05.208 INFO [stderr]     Checking quickcheck v0.2.27
Dec 18 10:17:07.392 INFO [stderr] warning: a method with this name may be added to the standard library in the future
Dec 18 10:17:07.392 INFO [stderr]    --> src/duration.rs:143:43
Dec 18 10:17:07.392 INFO [stderr]     |
Dec 18 10:17:07.392 INFO [stderr] 143 |             Duration::from_millis(millis).as_millis() == Some(millis)
Dec 18 10:17:07.392 INFO [stderr]     |                                           ^^^^^^^^^
Dec 18 10:17:07.392 INFO [stderr]     |
Dec 18 10:17:07.392 INFO [stderr]     = note: #[warn(unstable_name_collisions)] on by default
Dec 18 10:17:07.392 INFO [stderr]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
Dec 18 10:17:07.392 INFO [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
Dec 18 10:17:07.392 INFO [stderr]     = help: call with fully qualified syntax `duration::DurationExt::as_millis(...)` to keep using the current method
Dec 18 10:17:07.392 INFO [stderr]     = help: add #![feature(duration_as_u128)] to the crate attributes to enable `std::time::Duration::as_millis`
Dec 18 10:17:07.392 INFO [stderr] 
Dec 18 10:17:07.393 INFO [stderr] warning: a method with this name may be added to the standard library in the future
Dec 18 10:17:07.393 INFO [stderr]    --> src/duration.rs:148:36
Dec 18 10:17:07.393 INFO [stderr]     |
Dec 18 10:17:07.393 INFO [stderr] 148 |             let millis = match dur.as_millis() {
Dec 18 10:17:07.393 INFO [stderr]     |                                    ^^^^^^^^^
Dec 18 10:17:07.393 INFO [stderr]     |
Dec 18 10:17:07.393 INFO [stderr]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
Dec 18 10:17:07.393 INFO [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
Dec 18 10:17:07.393 INFO [stderr]     = help: call with fully qualified syntax `duration::DurationExt::as_millis(...)` to keep using the current method
Dec 18 10:17:07.393 INFO [stderr]     = help: add #![feature(duration_as_u128)] to the crate attributes to enable `std::time::Duration::as_millis`
Dec 18 10:17:07.393 INFO [stderr] 
Dec 18 10:17:07.431 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 18 10:17:07.431 INFO [stderr]    --> src/duration.rs:218:25
Dec 18 10:17:07.431 INFO [stderr]     |
Dec 18 10:17:07.431 INFO [stderr] 218 |                         dur * rhs;
Dec 18 10:17:07.431 INFO [stderr]     |                         ^^^^^^^^^
Dec 18 10:17:07.431 INFO [stderr]     |
Dec 18 10:17:07.431 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 10:17:07.431 INFO [stderr] 
Dec 18 10:17:07.446 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
Dec 18 10:17:07.696 INFO running `"docker" "inspect" "5658a1369781e3ace05b52e7124176c1b17c4c60c8149eed359e85dee201a918"`
Dec 18 10:17:07.828 INFO running `"docker" "rm" "-f" "5658a1369781e3ace05b52e7124176c1b17c4c60c8149eed359e85dee201a918"`
Dec 18 10:17:07.948 INFO [stdout] 5658a1369781e3ace05b52e7124176c1b17c4c60c8149eed359e85dee201a918