[INFO] updating cached repository wecohere/loom
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wecohere/loom
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wecohere/loom" "work/ex/beta-1.37-6/sources/1.36.0/gh/wecohere/loom"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/wecohere/loom'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wecohere/loom" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/wecohere/loom"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/wecohere/loom'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ac6bbf01272cb7b7ff9fa1a41a4e9d21dc1fd099
[INFO] sha for GitHub repo wecohere/loom: ac6bbf01272cb7b7ff9fa1a41a4e9d21dc1fd099
[INFO] validating manifest of wecohere/loom 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 wecohere/loom 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 wecohere/loom
[INFO] finished frobbing wecohere/loom
[INFO] frobbed toml for wecohere/loom written to work/ex/beta-1.37-6/sources/1.36.0/gh/wecohere/loom/Cargo.toml
[INFO] started frobbing wecohere/loom
[INFO] finished frobbing wecohere/loom
[INFO] frobbed toml for wecohere/loom written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/wecohere/loom/Cargo.toml
[INFO] crate wecohere/loom 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 wecohere/loom against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/wecohere/loom:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] c0958f3a62dca970d423cf17056eaa47c564092340aa54f65777f7f0d2845690
[INFO] running `"docker" "start" "-a" "c0958f3a62dca970d423cf17056eaa47c564092340aa54f65777f7f0d2845690"`
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling toml v0.4.5
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling mio v0.6.12
[INFO] [stderr]    Compiling tokio-io v0.1.4
[INFO] [stderr]    Compiling mio-uds v0.6.4
[INFO] [stderr]    Compiling tokio-core v0.1.12
[INFO] [stderr]    Compiling tokio-signal v0.1.3
[INFO] [stderr]    Compiling tokio-process v0.1.5
[INFO] [stderr]    Compiling loom v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]   --> src/runner/child_with_streams.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     name: &'a str,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.19s
[INFO] running `"docker" "inspect" "c0958f3a62dca970d423cf17056eaa47c564092340aa54f65777f7f0d2845690"`
[INFO] running `"docker" "rm" "-f" "c0958f3a62dca970d423cf17056eaa47c564092340aa54f65777f7f0d2845690"`
[INFO] [stdout] c0958f3a62dca970d423cf17056eaa47c564092340aa54f65777f7f0d2845690
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/wecohere/loom:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] cc72cd6fbdb9b991fcbdc6db507dfad83fe5d6e6f8bfea8e0d58454733867f56
[INFO] running `"docker" "start" "-a" "cc72cd6fbdb9b991fcbdc6db507dfad83fe5d6e6f8bfea8e0d58454733867f56"`
[INFO] [stderr]    Compiling loom v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]   --> src/runner/child_with_streams.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     name: &'a str,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `"docker" "inspect" "cc72cd6fbdb9b991fcbdc6db507dfad83fe5d6e6f8bfea8e0d58454733867f56"`
[INFO] running `"docker" "rm" "-f" "cc72cd6fbdb9b991fcbdc6db507dfad83fe5d6e6f8bfea8e0d58454733867f56"`
[INFO] [stdout] cc72cd6fbdb9b991fcbdc6db507dfad83fe5d6e6f8bfea8e0d58454733867f56
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/wecohere/loom:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] c53ad7e64680c4c454fba0500b6cfb7eebc8a3121d0a085f6010538ac2cd041b
[INFO] running `"docker" "start" "-a" "c53ad7e64680c4c454fba0500b6cfb7eebc8a3121d0a085f6010538ac2cd041b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/loom-07653260b8d9f56c
[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] [stderr]      Running /opt/crater/target/debug/deps/loom-f4d9689215da2666
[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] [stderr]    Doc-tests loom
[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" "c53ad7e64680c4c454fba0500b6cfb7eebc8a3121d0a085f6010538ac2cd041b"`
[INFO] running `"docker" "rm" "-f" "c53ad7e64680c4c454fba0500b6cfb7eebc8a3121d0a085f6010538ac2cd041b"`
[INFO] [stdout] c53ad7e64680c4c454fba0500b6cfb7eebc8a3121d0a085f6010538ac2cd041b