Dec 12 06:15:00.817 INFO checking time2-0.2.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 06:15:00.818 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 06:15:01.244 INFO [stdout] 9b11528be175969f50329097c0f19536f69547c57cb30b4ae5a978b20a73e78b
Dec 12 06:15:01.246 INFO running `"docker" "start" "-a" "9b11528be175969f50329097c0f19536f69547c57cb30b4ae5a978b20a73e78b"`
Dec 12 06:15:02.192 INFO [stderr] usermod: no changes
Dec 12 06:15:02.252 INFO [stderr]     Checking time2 v0.2.0 (/source)
Dec 12 06:15:02.252 INFO [stderr]     Checking quickcheck v0.2.27
Dec 12 06:15:05.828 INFO [stderr] warning: a method with this name may be added to the standard library in the future
Dec 12 06:15:05.828 INFO [stderr]    --> src/duration.rs:143:43
Dec 12 06:15:05.828 INFO [stderr]     |
Dec 12 06:15:05.828 INFO [stderr] 143 |             Duration::from_millis(millis).as_millis() == Some(millis)
Dec 12 06:15:05.828 INFO [stderr]     |                                           ^^^^^^^^^
Dec 12 06:15:05.828 INFO [stderr]     |
Dec 12 06:15:05.828 INFO [stderr]     = note: #[warn(unstable_name_collisions)] on by default
Dec 12 06:15:05.828 INFO [stderr]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
Dec 12 06:15:05.828 INFO [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
Dec 12 06:15:05.828 INFO [stderr]     = help: call with fully qualified syntax `duration::DurationExt::as_millis(...)` to keep using the current method
Dec 12 06:15:05.828 INFO [stderr]     = help: add #![feature(duration_as_u128)] to the crate attributes to enable `std::time::Duration::as_millis`
Dec 12 06:15:05.828 INFO [stderr] 
Dec 12 06:15:05.828 INFO [stderr] warning: a method with this name may be added to the standard library in the future
Dec 12 06:15:05.828 INFO [stderr]    --> src/duration.rs:148:36
Dec 12 06:15:05.828 INFO [stderr]     |
Dec 12 06:15:05.828 INFO [stderr] 148 |             let millis = match dur.as_millis() {
Dec 12 06:15:05.828 INFO [stderr]     |                                    ^^^^^^^^^
Dec 12 06:15:05.828 INFO [stderr]     |
Dec 12 06:15:05.828 INFO [stderr]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
Dec 12 06:15:05.828 INFO [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
Dec 12 06:15:05.828 INFO [stderr]     = help: call with fully qualified syntax `duration::DurationExt::as_millis(...)` to keep using the current method
Dec 12 06:15:05.828 INFO [stderr]     = help: add #![feature(duration_as_u128)] to the crate attributes to enable `std::time::Duration::as_millis`
Dec 12 06:15:05.828 INFO [stderr] 
Dec 12 06:15:05.879 INFO [stderr] warning: unused arithmetic operation that must be used
Dec 12 06:15:05.879 INFO [stderr]    --> src/duration.rs:218:25
Dec 12 06:15:05.879 INFO [stderr]     |
Dec 12 06:15:05.879 INFO [stderr] 218 |                         dur * rhs;
Dec 12 06:15:05.879 INFO [stderr]     |                         ^^^^^^^^^
Dec 12 06:15:05.879 INFO [stderr]     |
Dec 12 06:15:05.879 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 12 06:15:05.879 INFO [stderr] 
Dec 12 06:15:05.891 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.68s
Dec 12 06:15:05.895 INFO [stderr] su: No module specific data is present
Dec 12 06:15:06.204 INFO running `"docker" "inspect" "9b11528be175969f50329097c0f19536f69547c57cb30b4ae5a978b20a73e78b"`
Dec 12 06:15:06.325 INFO running `"docker" "rm" "-f" "9b11528be175969f50329097c0f19536f69547c57cb30b4ae5a978b20a73e78b"`
Dec 12 06:15:06.482 INFO [stdout] 9b11528be175969f50329097c0f19536f69547c57cb30b4ae5a978b20a73e78b