[INFO] fetching crate bus_queue 0.4.0...
[INFO] extracting crate bus_queue 0.4.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/bus_queue/0.4.0
[INFO] extracting crate bus_queue 0.4.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/bus_queue/0.4.0
[INFO] validating manifest of bus_queue-0.4.0 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 bus_queue-0.4.0 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 bus_queue-0.4.0
[INFO] removed 0 missing examples
[INFO] finished frobbing bus_queue-0.4.0
[INFO] frobbed toml for bus_queue-0.4.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/bus_queue/0.4.0/Cargo.toml
[INFO] started frobbing bus_queue-0.4.0
[INFO] removed 0 missing examples
[INFO] finished frobbing bus_queue-0.4.0
[INFO] frobbed toml for bus_queue-0.4.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/bus_queue/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 bus_queue-0.4.0 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-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/bus_queue/0.4.0:/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=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] 38955aa4ccdb803c9dd3640faa3c3826ed359cee69fded22966037cf65678ac2
[INFO] running `"docker" "start" "-a" "38955aa4ccdb803c9dd3640faa3c3826ed359cee69fded22966037cf65678ac2"`
[INFO] [stderr]    Compiling owned-alloc v0.2.0
[INFO] [stderr]    Compiling arc-swap v0.3.11
[INFO] [stderr]    Compiling lockfree v0.5.1
[INFO] [stderr]    Compiling bus_queue v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.14s
[INFO] running `"docker" "inspect" "38955aa4ccdb803c9dd3640faa3c3826ed359cee69fded22966037cf65678ac2"`
[INFO] running `"docker" "rm" "-f" "38955aa4ccdb803c9dd3640faa3c3826ed359cee69fded22966037cf65678ac2"`
[INFO] [stdout] 38955aa4ccdb803c9dd3640faa3c3826ed359cee69fded22966037cf65678ac2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/bus_queue/0.4.0:/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=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] dc3d1b6e6cb00a8d588942c0fed7ab81622a847c1dbcafeb811ca5835d5942a9
[INFO] running `"docker" "start" "-a" "dc3d1b6e6cb00a8d588942c0fed7ab81622a847c1dbcafeb811ca5835d5942a9"`
[INFO] [stderr]    Compiling bus_queue v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `"docker" "inspect" "dc3d1b6e6cb00a8d588942c0fed7ab81622a847c1dbcafeb811ca5835d5942a9"`
[INFO] running `"docker" "rm" "-f" "dc3d1b6e6cb00a8d588942c0fed7ab81622a847c1dbcafeb811ca5835d5942a9"`
[INFO] [stdout] dc3d1b6e6cb00a8d588942c0fed7ab81622a847c1dbcafeb811ca5835d5942a9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/bus_queue/0.4.0:/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=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] f84d8af7d9699c13da6488c8747523decb8436c1a42bf41ca360c90e0f0e7412
[INFO] running `"docker" "start" "-a" "f84d8af7d9699c13da6488c8747523decb8436c1a42bf41ca360c90e0f0e7412"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bus_queue-6c0a5a9877d499b5
[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 bus_queue
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs -  (line 93) ... FAILED
[INFO] [stdout] test src/lib.rs -  (line 47) ... ok
[INFO] [stdout] test src/lib.rs -  (line 65) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 93) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `tokio`
[INFO] [stdout]  --> src/lib.rs:96:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate tokio;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs -  (line 93)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "f84d8af7d9699c13da6488c8747523decb8436c1a42bf41ca360c90e0f0e7412"`
[INFO] running `"docker" "rm" "-f" "f84d8af7d9699c13da6488c8747523decb8436c1a42bf41ca360c90e0f0e7412"`
[INFO] [stdout] f84d8af7d9699c13da6488c8747523decb8436c1a42bf41ca360c90e0f0e7412