[INFO] fetching crate cb_fut 0.2.1...
[INFO] testing cb_fut-0.2.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate cb_fut 0.2.1 into /workspace/builds/worker-117/source
[INFO] validating manifest of crates.io crate cb_fut 0.2.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cb_fut 0.2.1
[INFO] finished tweaking crates.io crate cb_fut 0.2.1
[INFO] tweaked toml for crates.io crate cb_fut 0.2.1 written to /workspace/builds/worker-117/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 362b06bb6597752aba4b5f2bedc2a09bd47e168a6c559fe2545060ce9d894867
[INFO] running `Command { std: "docker" "start" "-a" "362b06bb6597752aba4b5f2bedc2a09bd47e168a6c559fe2545060ce9d894867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "362b06bb6597752aba4b5f2bedc2a09bd47e168a6c559fe2545060ce9d894867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "362b06bb6597752aba4b5f2bedc2a09bd47e168a6c559fe2545060ce9d894867", kill_on_drop: false }`
[INFO] [stdout] 362b06bb6597752aba4b5f2bedc2a09bd47e168a6c559fe2545060ce9d894867
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11b8f0d12c85970297ecb5f7c9848a73db359cb8b6b5cdb46b7595acb84adace
[INFO] running `Command { std: "docker" "start" "-a" "11b8f0d12c85970297ecb5f7c9848a73db359cb8b6b5cdb46b7595acb84adace", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling futures-executor v0.3.21
[INFO] [stderr]    Compiling futures v0.3.21
[INFO] [stderr]    Compiling cb_fut v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.43s
[INFO] running `Command { std: "docker" "inspect" "11b8f0d12c85970297ecb5f7c9848a73db359cb8b6b5cdb46b7595acb84adace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11b8f0d12c85970297ecb5f7c9848a73db359cb8b6b5cdb46b7595acb84adace", kill_on_drop: false }`
[INFO] [stdout] 11b8f0d12c85970297ecb5f7c9848a73db359cb8b6b5cdb46b7595acb84adace
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b073d5340740c9267f608bb3daa3950df1439505225e7b8adcfda8c2fa0de49d
[INFO] running `Command { std: "docker" "start" "-a" "b073d5340740c9267f608bb3daa3950df1439505225e7b8adcfda8c2fa0de49d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cb_fut v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]    --> src/lib.rs:666:71
[INFO] [stdout]     |
[INFO] [stdout] 666 |         futures::executor::block_on(once_blocked!(func(2 + 3, ->() -> {3i32})));
[INFO] [stdout]     |                                                                       ^    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 666 -         futures::executor::block_on(once_blocked!(func(2 + 3, ->() -> {3i32})));
[INFO] [stdout] 666 +         futures::executor::block_on(once_blocked!(func(2 + 3, ->() -> 3i32)));
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]    --> src/lib.rs:728:64
[INFO] [stdout]     |
[INFO] [stdout] 728 |         futures::executor::block_on(once_blocked!(func(->() -> {3i32}, 2 + 3)));
[INFO] [stdout]     |                                                                ^    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 728 -         futures::executor::block_on(once_blocked!(func(->() -> {3i32}, 2 + 3)));
[INFO] [stdout] 728 +         futures::executor::block_on(once_blocked!(func(->() -> 3i32, 2 + 3)));
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.94s
[INFO] running `Command { std: "docker" "inspect" "b073d5340740c9267f608bb3daa3950df1439505225e7b8adcfda8c2fa0de49d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b073d5340740c9267f608bb3daa3950df1439505225e7b8adcfda8c2fa0de49d", kill_on_drop: false }`
[INFO] [stdout] b073d5340740c9267f608bb3daa3950df1439505225e7b8adcfda8c2fa0de49d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bbfb28bd8fd55123af6b30a9086339de1ac531822960ae3f9906edf60a2b6b1f
[INFO] running `Command { std: "docker" "start" "-a" "bbfb28bd8fd55123af6b30a9086339de1ac531822960ae3f9906edf60a2b6b1f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]    --> src/lib.rs:666:71
[INFO] [stderr]     |
[INFO] [stderr] 666 |         futures::executor::block_on(once_blocked!(func(2 + 3, ->() -> {3i32})));
[INFO] [stderr]     |                                                                       ^    ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 666 -         futures::executor::block_on(once_blocked!(func(2 + 3, ->() -> {3i32})));
[INFO] [stderr] 666 +         futures::executor::block_on(once_blocked!(func(2 + 3, ->() -> 3i32)));
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]    --> src/lib.rs:728:64
[INFO] [stderr]     |
[INFO] [stderr] 728 |         futures::executor::block_on(once_blocked!(func(->() -> {3i32}, 2 + 3)));
[INFO] [stderr]     |                                                                ^    ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 728 -         futures::executor::block_on(once_blocked!(func(->() -> {3i32}, 2 + 3)));
[INFO] [stderr] 728 +         futures::executor::block_on(once_blocked!(func(->() -> 3i32, 2 + 3)));
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `cb_fut` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cb_fut-1b365df66b1a9285)
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test tests::test_once_blocked_infix ... ok
[INFO] [stdout] test tests::test_once_blocked_default_postfix ... ok
[INFO] [stdout] test tests::test_once_blocked_postfix ... ok
[INFO] [stdout] test tests::test_once_blocked_default_postfix_no_args ... ok
[INFO] [stdout] test tests::test_once_blocked_default_infix_no_args ... ok
[INFO] [stdout] test tests::test_once_blocked_default_infix ... ok
[INFO] [stdout] test tests::test_once_blocked_default_prefix ... ok
[INFO] [stdout] test tests::test_once_blocked_default_prefix_no_args ... ok
[INFO] [stdout] test tests::test_stream_infix ... ok
[INFO] [stdout] test tests::test_stream_blocked_postfix ... ok
[INFO] [stdout] test tests::test_once_blocked_postfix_with_logic ... ok
[INFO] [stdout] test tests::test_stream_blocked_infix ... ok
[INFO] [stdout] test tests::test_stream_blocked_prefix ... ok
[INFO] [stdout] test tests::test_stream_postfix ... ok
[INFO] [stdout] test tests::test_stream_prefix_no_args ... ok
[INFO] [stdout] test tests::test_once_blocked_prefix ... ok
[INFO] [stdout] test tests::test_stream_prefix ... ok
[INFO] [stdout] test tests::test_once_infix ... ok
[INFO] [stdout] test tests::test_once_postfix ... ok
[INFO] [stdout] test tests::test_once_prefix ... ok
[INFO] [stderr]    Doc-tests cb_fut
[INFO] [stdout] test tests::test_once_postfix_no_args ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - stream_blocked (line 318) ... ok
[INFO] [stdout] test src/lib.rs - stream (line 250) ... ok
[INFO] [stdout] test src/lib.rs - once_blocked (line 132) ... ok
[INFO] [stdout] test src/lib.rs - once_blocked (line 147) ... ok
[INFO] [stdout] test src/lib.rs - once (line 65) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 6.64s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bbfb28bd8fd55123af6b30a9086339de1ac531822960ae3f9906edf60a2b6b1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbfb28bd8fd55123af6b30a9086339de1ac531822960ae3f9906edf60a2b6b1f", kill_on_drop: false }`
[INFO] [stdout] bbfb28bd8fd55123af6b30a9086339de1ac531822960ae3f9906edf60a2b6b1f