[INFO] crate single_value_channel 1.2.0 is already in cache
[INFO] extracting crate single_value_channel 1.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/single_value_channel/1.2.0
[INFO] extracting crate single_value_channel 1.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/single_value_channel/1.2.0
[INFO] validating manifest of single_value_channel-1.2.0 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 single_value_channel-1.2.0 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 single_value_channel-1.2.0
[INFO] finished frobbing single_value_channel-1.2.0
[INFO] frobbed toml for single_value_channel-1.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/single_value_channel/1.2.0/Cargo.toml
[INFO] started frobbing single_value_channel-1.2.0
[INFO] finished frobbing single_value_channel-1.2.0
[INFO] frobbed toml for single_value_channel-1.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/single_value_channel/1.2.0/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 single_value_channel-1.2.0 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/single_value_channel/1.2.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 2ef066ca1daa390aa50386cb9cbeeeb7f7c8a6a85897e9ca09727e6e689c6902
[INFO] running `"docker" "start" "-a" "2ef066ca1daa390aa50386cb9cbeeeb7f7c8a6a85897e9ca09727e6e689c6902"`
[INFO] [stderr]    Compiling single_value_channel v1.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `"docker" "inspect" "2ef066ca1daa390aa50386cb9cbeeeb7f7c8a6a85897e9ca09727e6e689c6902"`
[INFO] running `"docker" "rm" "-f" "2ef066ca1daa390aa50386cb9cbeeeb7f7c8a6a85897e9ca09727e6e689c6902"`
[INFO] [stdout] 2ef066ca1daa390aa50386cb9cbeeeb7f7c8a6a85897e9ca09727e6e689c6902
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/single_value_channel/1.2.0:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 41f88c02e6a691dc55a3a2ec71d6735070e86284a4f3723043c14069e44c9444
[INFO] running `"docker" "start" "-a" "41f88c02e6a691dc55a3a2ec71d6735070e86284a4f3723043c14069e44c9444"`
[INFO] [stderr]    Compiling single_value_channel v1.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "41f88c02e6a691dc55a3a2ec71d6735070e86284a4f3723043c14069e44c9444"`
[INFO] running `"docker" "rm" "-f" "41f88c02e6a691dc55a3a2ec71d6735070e86284a4f3723043c14069e44c9444"`
[INFO] [stdout] 41f88c02e6a691dc55a3a2ec71d6735070e86284a4f3723043c14069e44c9444
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/single_value_channel/1.2.0:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 11b46d25a8c8b5fa484b9a6215ced8039356a1c72a7704d08bd8bbf64cf5165c
[INFO] running `"docker" "start" "-a" "11b46d25a8c8b5fa484b9a6215ced8039356a1c72a7704d08bd8bbf64cf5165c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/single_value_channel-1c0070c61f2027e1
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test test::error_writing_to_dead_reader ... ok
[INFO] [stdout] test test::no_args_channel ... ok
[INFO] [stdout] test test::multiple_updaters ... ok
[INFO] [stdout] test test::receiver_has_no_updater ... ok
[INFO] [stdout] test test::send_recv_option ... ok
[INFO] [stdout] test test::latest_mut ... ok
[INFO] [stdout] test test::non_blocking_write_during_read ... ok
[INFO] [stdout] test test::updater_has_no_receiver ... ok
[INFO] [stdout] test test::send_recv_value ... ok
[INFO] [stdout] test test::concurrent_send_recv ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests single_value_channel
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 18) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "11b46d25a8c8b5fa484b9a6215ced8039356a1c72a7704d08bd8bbf64cf5165c"`
[INFO] running `"docker" "rm" "-f" "11b46d25a8c8b5fa484b9a6215ced8039356a1c72a7704d08bd8bbf64cf5165c"`
[INFO] [stdout] 11b46d25a8c8b5fa484b9a6215ced8039356a1c72a7704d08bd8bbf64cf5165c