[INFO] fetching crate flatty-io 0.1.0-rc.6...
[INFO] testing flatty-io-0.1.0-rc.6 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate flatty-io 0.1.0-rc.6 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate flatty-io 0.1.0-rc.6
[INFO] finished tweaking crates.io crate flatty-io 0.1.0-rc.6
[INFO] tweaked toml for crates.io crate flatty-io 0.1.0-rc.6 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flatty-io 0.1.0-rc.6 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 75 packages to latest compatible versions
[INFO] [stderr]       Adding async-ringbuf v0.2.1 (available: v0.3.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46f9d35dd504e08628398093d0a82a8df9c3ab79bd36aa13869349fa285f4bfe
[INFO] running `Command { std: "docker" "start" "-a" "46f9d35dd504e08628398093d0a82a8df9c3ab79bd36aa13869349fa285f4bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46f9d35dd504e08628398093d0a82a8df9c3ab79bd36aa13869349fa285f4bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46f9d35dd504e08628398093d0a82a8df9c3ab79bd36aa13869349fa285f4bfe", kill_on_drop: false }`
[INFO] [stdout] 46f9d35dd504e08628398093d0a82a8df9c3ab79bd36aa13869349fa285f4bfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3ff5b16aa33fd6e008757116be638e2b8c84e8fea3901293a2fafde1126e961
[INFO] running `Command { std: "docker" "start" "-a" "c3ff5b16aa33fd6e008757116be638e2b8c84e8fea3901293a2fafde1126e961", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling stavec v0.3.0
[INFO] [stderr]    Compiling flatty-macros v0.1.0-rc.4
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling flatty-base v0.1.0-rc.4
[INFO] [stderr]    Compiling flatty-portable v0.1.0-rc.4
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling flatty v0.1.0-rc.4
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling flatty-io v0.1.0-rc.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::*`
[INFO] [stdout]  --> src/blocking/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use io::*;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.07s
[INFO] running `Command { std: "docker" "inspect" "c3ff5b16aa33fd6e008757116be638e2b8c84e8fea3901293a2fafde1126e961", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ff5b16aa33fd6e008757116be638e2b8c84e8fea3901293a2fafde1126e961", kill_on_drop: false }`
[INFO] [stdout] c3ff5b16aa33fd6e008757116be638e2b8c84e8fea3901293a2fafde1126e961
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97aaea871f7f0bacfe4a16d84dc524b1e7b2d5a354bbe950d13cd6bca117a378
[INFO] running `Command { std: "docker" "start" "-a" "97aaea871f7f0bacfe4a16d84dc524b1e7b2d5a354bbe950d13cd6bca117a378", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling ringbuf v0.4.8
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling async-lock v3.4.1
[INFO] [stderr]    Compiling ringbuf-blocking v0.1.0-rc.5
[INFO] [stderr]    Compiling blocking v1.6.2
[INFO] [stderr]    Compiling async-executor v1.13.3
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling flatty-macros v0.1.0-rc.4
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling async-ringbuf v0.2.1
[INFO] [stderr]    Compiling flatty v0.1.0-rc.4
[INFO] [stderr]    Compiling flatty-io v0.1.0-rc.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::*`
[INFO] [stdout]  --> src/blocking/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use io::*;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling polling v3.11.0
[INFO] [stderr]    Compiling async-global-executor v2.4.1
[INFO] [stderr]    Compiling async-std v1.13.2
[INFO] [stdout] warning: unused import: `io::*`
[INFO] [stdout]  --> src/blocking/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use io::*;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 17.72s
[INFO] running `Command { std: "docker" "inspect" "97aaea871f7f0bacfe4a16d84dc524b1e7b2d5a354bbe950d13cd6bca117a378", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97aaea871f7f0bacfe4a16d84dc524b1e7b2d5a354bbe950d13cd6bca117a378", kill_on_drop: false }`
[INFO] [stdout] 97aaea871f7f0bacfe4a16d84dc524b1e7b2d5a354bbe950d13cd6bca117a378
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c19bac2d84fd1423eac88ccc79b5aab97c28231d8492aa6b8a95181fd6ae25bf
[INFO] running `Command { std: "docker" "start" "-a" "c19bac2d84fd1423eac88ccc79b5aab97c28231d8492aa6b8a95181fd6ae25bf", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `io::*`
[INFO] [stdout] 
[INFO] [stderr]  --> src/blocking/mod.rs:7:9
[INFO] [stdout] running 2 tests
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub use io::*;
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `flatty-io` (lib) generated 1 warning (run `cargo fix --lib -p flatty-io` to apply 1 suggestion)
[INFO] [stderr] warning: `flatty-io` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flatty_io-05afc35a4d2a5181)
[INFO] [stdout] test tests::blocking::unique ... ok
[INFO] [stdout] test tests::async_::unique ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flatty_io
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c19bac2d84fd1423eac88ccc79b5aab97c28231d8492aa6b8a95181fd6ae25bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c19bac2d84fd1423eac88ccc79b5aab97c28231d8492aa6b8a95181fd6ae25bf", kill_on_drop: false }`
[INFO] [stdout] c19bac2d84fd1423eac88ccc79b5aab97c28231d8492aa6b8a95181fd6ae25bf