[INFO] fetching crate polyhorn-channel 0.3.2...
[INFO] testing polyhorn-channel-0.3.2 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate polyhorn-channel 0.3.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate polyhorn-channel 0.3.2 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polyhorn-channel 0.3.2
[INFO] finished tweaking crates.io crate polyhorn-channel 0.3.2
[INFO] tweaked toml for crates.io crate polyhorn-channel 0.3.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32473b476685448f80165a98e325d1a2220b97368f6c5e00788ca5045195bdf9
[INFO] running `Command { std: "docker" "start" "-a" "32473b476685448f80165a98e325d1a2220b97368f6c5e00788ca5045195bdf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32473b476685448f80165a98e325d1a2220b97368f6c5e00788ca5045195bdf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32473b476685448f80165a98e325d1a2220b97368f6c5e00788ca5045195bdf9", kill_on_drop: false }`
[INFO] [stdout] 32473b476685448f80165a98e325d1a2220b97368f6c5e00788ca5045195bdf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e4fec9a11d9175d19a329301049315f02cdc7b86c7f34e66dc8da8dd92426b2
[INFO] running `Command { std: "docker" "start" "-a" "3e4fec9a11d9175d19a329301049315f02cdc7b86c7f34e66dc8da8dd92426b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-executor v0.3.21
[INFO] [stderr]    Compiling futures v0.3.21
[INFO] [stderr]    Compiling polyhorn-core v0.3.2
[INFO] [stderr]    Compiling polyhorn-channel v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.78s
[INFO] running `Command { std: "docker" "inspect" "3e4fec9a11d9175d19a329301049315f02cdc7b86c7f34e66dc8da8dd92426b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e4fec9a11d9175d19a329301049315f02cdc7b86c7f34e66dc8da8dd92426b2", kill_on_drop: false }`
[INFO] [stdout] 3e4fec9a11d9175d19a329301049315f02cdc7b86c7f34e66dc8da8dd92426b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8087d4934a7ed4fa532ed88d8e42864dcc5e64de34254d69bd8cf30715a04172
[INFO] running `Command { std: "docker" "start" "-a" "8087d4934a7ed4fa532ed88d8e42864dcc5e64de34254d69bd8cf30715a04172", kill_on_drop: false }`
[INFO] [stderr]    Compiling polyhorn-channel v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.40s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/polyhorn_channel-9ba3f18922e212d5)
[INFO] running `Command { std: "docker" "inspect" "8087d4934a7ed4fa532ed88d8e42864dcc5e64de34254d69bd8cf30715a04172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8087d4934a7ed4fa532ed88d8e42864dcc5e64de34254d69bd8cf30715a04172", kill_on_drop: false }`
[INFO] [stdout] 8087d4934a7ed4fa532ed88d8e42864dcc5e64de34254d69bd8cf30715a04172
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8d62df673b87281212629f0c18b322ee319fd4859a238caecf4aa440e8a9cf78
[INFO] running `Command { std: "docker" "start" "-a" "8d62df673b87281212629f0c18b322ee319fd4859a238caecf4aa440e8a9cf78", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/polyhorn_channel-9ba3f18922e212d5)
[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] [stderr]    Doc-tests polyhorn-channel
[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" "8d62df673b87281212629f0c18b322ee319fd4859a238caecf4aa440e8a9cf78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d62df673b87281212629f0c18b322ee319fd4859a238caecf4aa440e8a9cf78", kill_on_drop: false }`
[INFO] [stdout] 8d62df673b87281212629f0c18b322ee319fd4859a238caecf4aa440e8a9cf78