[INFO] crate tokio-sync 0.1.6 is already in cache
[INFO] extracting crate tokio-sync 0.1.6 into work/ex/beta-1.38-1/sources/1.37.0/reg/tokio-sync/0.1.6
[INFO] extracting crate tokio-sync 0.1.6 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tokio-sync/0.1.6
[INFO] validating manifest of tokio-sync-0.1.6 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tokio-sync-0.1.6 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tokio-sync-0.1.6
[INFO] finished frobbing tokio-sync-0.1.6
[INFO] frobbed toml for tokio-sync-0.1.6 written to work/ex/beta-1.38-1/sources/1.37.0/reg/tokio-sync/0.1.6/Cargo.toml
[INFO] started frobbing tokio-sync-0.1.6
[INFO] finished frobbing tokio-sync-0.1.6
[INFO] frobbed toml for tokio-sync-0.1.6 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tokio-sync/0.1.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing tokio-sync-0.1.6 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tokio-sync/0.1.6:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 28f73021b9ab9b5d3e537953d182ce169121bd2ee723253912ce1d6c9d7e3a42
[INFO] running `"docker" "start" "-a" "28f73021b9ab9b5d3e537953d182ce169121bd2ee723253912ce1d6c9d7e3a42"`
[INFO] [stderr]    Compiling tokio-sync v0.1.6 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "28f73021b9ab9b5d3e537953d182ce169121bd2ee723253912ce1d6c9d7e3a42"`
[INFO] running `"docker" "rm" "-f" "28f73021b9ab9b5d3e537953d182ce169121bd2ee723253912ce1d6c9d7e3a42"`
[INFO] [stdout] 28f73021b9ab9b5d3e537953d182ce169121bd2ee723253912ce1d6c9d7e3a42
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tokio-sync/0.1.6:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4ed60b0f6d0b234f1fc4fad81662ed2dd8579953eda3e31dfda404e45bf1cef3
[INFO] running `"docker" "start" "-a" "4ed60b0f6d0b234f1fc4fad81662ed2dd8579953eda3e31dfda404e45bf1cef3"`
[INFO] [stderr]    Compiling loom v0.1.1
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr] warning[E0381]: use of possibly uninitialized variable: `_`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/loom-0.1.1/src/rt/scheduler/std.rs:238:13
[INFO] [stderr]     |
[INFO] [stderr] 238 | /             loop {
[INFO] [stderr] 239 | |                 match *th {
[INFO] [stderr] 240 | |                     Idle => {
[INFO] [stderr] 241 | |                         th = shared.condvars[i].wait(th).unwrap();
[INFO] [stderr] ...   |
[INFO] [stderr] 251 | |                 }
[INFO] [stderr] 252 | |             }
[INFO] [stderr]     | |_____________^ use of possibly uninitialized value
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling tokio-sync v0.1.6 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.44s
[INFO] running `"docker" "inspect" "4ed60b0f6d0b234f1fc4fad81662ed2dd8579953eda3e31dfda404e45bf1cef3"`
[INFO] running `"docker" "rm" "-f" "4ed60b0f6d0b234f1fc4fad81662ed2dd8579953eda3e31dfda404e45bf1cef3"`
[INFO] [stdout] 4ed60b0f6d0b234f1fc4fad81662ed2dd8579953eda3e31dfda404e45bf1cef3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tokio-sync/0.1.6:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] eb1fe68a5fe180a2fdf6ef31d8d27585e5d86e2b71ed230a0db9187038f09d32
[INFO] running `"docker" "start" "-a" "eb1fe68a5fe180a2fdf6ef31d8d27585e5d86e2b71ed230a0db9187038f09d32"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tokio_sync-6d0279816a41f689
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test lock::bounds ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/atomic_task-72e20a7f3317551b
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test register_task ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/errors-c55960c5aef50928
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test watch_error_bound ... ok
[INFO] [stdout] test mpsc_error_bound ... ok
[INFO] [stdout] test oneshot_error_bound ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fuzz_atomic_task-3a75b59244f490df
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fuzz_list-c68b134ed03f4d68
[INFO] [stdout] test basic_notification ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test smoke ... test smoke has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `"docker" "inspect" "eb1fe68a5fe180a2fdf6ef31d8d27585e5d86e2b71ed230a0db9187038f09d32"`
[INFO] running `"docker" "rm" "-f" "eb1fe68a5fe180a2fdf6ef31d8d27585e5d86e2b71ed230a0db9187038f09d32"`
[INFO] [stdout] eb1fe68a5fe180a2fdf6ef31d8d27585e5d86e2b71ed230a0db9187038f09d32