[INFO] updating cached repository justinas/tappy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/justinas/tappy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/justinas/tappy" "work/ex/beta-1.37-6/sources/1.36.0/gh/justinas/tappy"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/justinas/tappy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/justinas/tappy" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/justinas/tappy"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/justinas/tappy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 34c6d3d5914e1367c7161e34a664a634b4771e9d
[INFO] sha for GitHub repo justinas/tappy: 34c6d3d5914e1367c7161e34a664a634b4771e9d
[INFO] validating manifest of justinas/tappy on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of justinas/tappy on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing justinas/tappy
[INFO] finished frobbing justinas/tappy
[INFO] frobbed toml for justinas/tappy written to work/ex/beta-1.37-6/sources/1.36.0/gh/justinas/tappy/Cargo.toml
[INFO] started frobbing justinas/tappy
[INFO] finished frobbing justinas/tappy
[INFO] frobbed toml for justinas/tappy written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/justinas/tappy/Cargo.toml
[INFO] crate justinas/tappy already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing justinas/tappy against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/justinas/tappy:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 86c5089407a8b1a61bc5e1425a5c7f2247611869a4e26830d17242876731b6b9
[INFO] running `"docker" "start" "-a" "86c5089407a8b1a61bc5e1425a5c7f2247611869a4e26830d17242876731b6b9"`
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling enumset v0.3.12
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling enum-map-derive v0.4.0
[INFO] [stderr]    Compiling enum-map v0.4.1
[INFO] [stderr]    Compiling cursive v0.9.2
[INFO] [stderr]    Compiling tappy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/main.rs:39:38
[INFO] [stderr]    |
[INFO] [stderr] 39 |             let delta = (now - prev).as_secs_f64();
[INFO] [stderr]    |                                      ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unstable_name_collisions)] on by default
[INFO] [stderr]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `AsSecsF64::as_secs_f64(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.89s
[INFO] running `"docker" "inspect" "86c5089407a8b1a61bc5e1425a5c7f2247611869a4e26830d17242876731b6b9"`
[INFO] running `"docker" "rm" "-f" "86c5089407a8b1a61bc5e1425a5c7f2247611869a4e26830d17242876731b6b9"`
[INFO] [stdout] 86c5089407a8b1a61bc5e1425a5c7f2247611869a4e26830d17242876731b6b9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/justinas/tappy:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] e5f7ad550b8886f861f6684450564105450bc78836078a235ee8a0bbb54a515b
[INFO] running `"docker" "start" "-a" "e5f7ad550b8886f861f6684450564105450bc78836078a235ee8a0bbb54a515b"`
[INFO] [stderr]    Compiling tappy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/main.rs:39:38
[INFO] [stderr]    |
[INFO] [stderr] 39 |             let delta = (now - prev).as_secs_f64();
[INFO] [stderr]    |                                      ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unstable_name_collisions)] on by default
[INFO] [stderr]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `AsSecsF64::as_secs_f64(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.45s
[INFO] running `"docker" "inspect" "e5f7ad550b8886f861f6684450564105450bc78836078a235ee8a0bbb54a515b"`
[INFO] running `"docker" "rm" "-f" "e5f7ad550b8886f861f6684450564105450bc78836078a235ee8a0bbb54a515b"`
[INFO] [stdout] e5f7ad550b8886f861f6684450564105450bc78836078a235ee8a0bbb54a515b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/justinas/tappy:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 70f8f75261b0015c693144112d31ded50b37b5e45f271e1ce69b963b9d969cd1
[INFO] running `"docker" "start" "-a" "70f8f75261b0015c693144112d31ded50b37b5e45f271e1ce69b963b9d969cd1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tappy-57640a40e0974133
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "70f8f75261b0015c693144112d31ded50b37b5e45f271e1ce69b963b9d969cd1"`
[INFO] running `"docker" "rm" "-f" "70f8f75261b0015c693144112d31ded50b37b5e45f271e1ce69b963b9d969cd1"`
[INFO] [stdout] 70f8f75261b0015c693144112d31ded50b37b5e45f271e1ce69b963b9d969cd1