Dec 18 10:17:05.265 INFO checking time2-0.2.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 10:17:05.265 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 10:17:05.620 INFO [stdout] b16be68c77f68e825955da4b1372e1451a26cbdf86b83437f378e0ae4c953a51
Dec 18 10:17:05.625 INFO running `"docker" "start" "-a" "b16be68c77f68e825955da4b1372e1451a26cbdf86b83437f378e0ae4c953a51"`
Dec 18 10:17:06.433 INFO [stderr]     Checking time2 v0.2.0 (/opt/crater/workdir)
Dec 18 10:17:06.434 INFO [stderr]     Checking quickcheck v0.2.27
Dec 18 10:17:08.407 INFO [stderr] warning: a method with this name may be added to the standard library in the future
Dec 18 10:17:08.407 INFO [stderr]    --> src/duration.rs:143:43
Dec 18 10:17:08.407 INFO [stderr]     |
Dec 18 10:17:08.407 INFO [stderr] 143 |             Duration::from_millis(millis).as_millis() == Some(millis)
Dec 18 10:17:08.407 INFO [stderr]     |                                           ^^^^^^^^^
Dec 18 10:17:08.407 INFO [stderr]     |
Dec 18 10:17:08.407 INFO [stderr]     = note: #[warn(unstable_name_collisions)] on by default
Dec 18 10:17:08.407 INFO [stderr]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
Dec 18 10:17:08.407 INFO [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
Dec 18 10:17:08.407 INFO [stderr]     = help: call with fully qualified syntax `duration::DurationExt::as_millis(...)` to keep using the current method
Dec 18 10:17:08.407 INFO [stderr]     = help: add #![feature(duration_as_u128)] to the crate attributes to enable `std::time::Duration::as_millis`
Dec 18 10:17:08.407 INFO [stderr] 
Dec 18 10:17:08.408 INFO [stderr] warning: a method with this name may be added to the standard library in the future
Dec 18 10:17:08.408 INFO [stderr]    --> src/duration.rs:148:36
Dec 18 10:17:08.408 INFO [stderr]     |
Dec 18 10:17:08.408 INFO [stderr] 148 |             let millis = match dur.as_millis() {
Dec 18 10:17:08.408 INFO [stderr]     |                                    ^^^^^^^^^
Dec 18 10:17:08.408 INFO [stderr]     |
Dec 18 10:17:08.408 INFO [stderr]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
Dec 18 10:17:08.408 INFO [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
Dec 18 10:17:08.408 INFO [stderr]     = help: call with fully qualified syntax `duration::DurationExt::as_millis(...)` to keep using the current method
Dec 18 10:17:08.408 INFO [stderr]     = help: add #![feature(duration_as_u128)] to the crate attributes to enable `std::time::Duration::as_millis`
Dec 18 10:17:08.408 INFO [stderr] 
Dec 18 10:17:08.447 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 18 10:17:08.447 INFO [stderr]    --> src/duration.rs:218:25
Dec 18 10:17:08.447 INFO [stderr]     |
Dec 18 10:17:08.447 INFO [stderr] 218 |                         dur * rhs;
Dec 18 10:17:08.447 INFO [stderr]     |                         ^^^^^^^^^
Dec 18 10:17:08.447 INFO [stderr]     |
Dec 18 10:17:08.447 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 10:17:08.447 INFO [stderr] 
Dec 18 10:17:08.468 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
Dec 18 10:17:08.718 INFO running `"docker" "inspect" "b16be68c77f68e825955da4b1372e1451a26cbdf86b83437f378e0ae4c953a51"`
Dec 18 10:17:08.818 INFO running `"docker" "rm" "-f" "b16be68c77f68e825955da4b1372e1451a26cbdf86b83437f378e0ae4c953a51"`
Dec 18 10:17:08.979 INFO [stdout] b16be68c77f68e825955da4b1372e1451a26cbdf86b83437f378e0ae4c953a51