[INFO] fetching crate streamson-tokio 7.1.0...
[INFO] checking streamson-tokio-7.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate streamson-tokio 7.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate streamson-tokio 7.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate streamson-tokio 7.1.0
[INFO] finished tweaking crates.io crate streamson-tokio 7.1.0
[INFO] tweaked toml for crates.io crate streamson-tokio 7.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 44 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bytes v0.5.6 (latest: v1.6.0)
[INFO] [stderr]       Adding bytes v0.6.0 (latest: v1.6.0)
[INFO] [stderr]       Adding mio v0.7.14 (latest: v0.8.11)
[INFO] [stderr]       Adding miow v0.3.7 (latest: v0.6.0)
[INFO] [stderr]       Adding ntapi v0.3.7 (latest: v0.4.1)
[INFO] [stderr]       Adding parking_lot v0.11.2 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.8.6 (latest: v0.9.9)
[INFO] [stderr]       Adding pin-project-lite v0.1.12 (latest: v0.2.14)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding tokio v0.3.7 (latest: v1.37.0)
[INFO] [stderr]       Adding tokio-macros v0.3.2 (latest: v2.2.0)
[INFO] [stderr]       Adding tokio-util v0.4.0 (latest: v0.7.10)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v0.3.2
[INFO] [stderr]   Downloaded streamson-lib v7.1.0
[INFO] [stderr]   Downloaded sedregex v0.2.5
[INFO] [stderr]   Downloaded tokio-util v0.4.0
[INFO] [stderr]   Downloaded tokio v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ccf568fcada1493c6716a4fabe5c5a95f3167ae2660a65c7c2294a2f85a9cca
[INFO] running `Command { std: "docker" "start" "-a" "2ccf568fcada1493c6716a4fabe5c5a95f3167ae2660a65c7c2294a2f85a9cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ccf568fcada1493c6716a4fabe5c5a95f3167ae2660a65c7c2294a2f85a9cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ccf568fcada1493c6716a4fabe5c5a95f3167ae2660a65c7c2294a2f85a9cca", kill_on_drop: false }`
[INFO] [stdout] 2ccf568fcada1493c6716a4fabe5c5a95f3167ae2660a65c7c2294a2f85a9cca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d89a2417604769aa361cf8cadcde7d27103d1e2417eea6330263a8621563cd6a
[INFO] running `Command { std: "docker" "start" "-a" "d89a2417604769aa361cf8cadcde7d27103d1e2417eea6330263a8621563cd6a", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling tokio v0.3.7
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]    Compiling tokio-macros v0.3.2
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking sedregex v0.2.5
[INFO] [stderr]     Checking streamson-lib v7.1.0
[INFO] [stderr]     Checking tokio-util v0.4.0
[INFO] [stderr]     Checking streamson-tokio v7.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.12s
[INFO] running `Command { std: "docker" "inspect" "d89a2417604769aa361cf8cadcde7d27103d1e2417eea6330263a8621563cd6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d89a2417604769aa361cf8cadcde7d27103d1e2417eea6330263a8621563cd6a", kill_on_drop: false }`
[INFO] [stdout] d89a2417604769aa361cf8cadcde7d27103d1e2417eea6330263a8621563cd6a
[INFO] checking streamson-tokio-7.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate streamson-tokio 7.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate streamson-tokio 7.1.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate streamson-tokio 7.1.0
[INFO] finished tweaking crates.io crate streamson-tokio 7.1.0
[INFO] tweaked toml for crates.io crate streamson-tokio 7.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 44 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bytes v0.5.6 (latest: v1.6.0)
[INFO] [stderr]       Adding bytes v0.6.0 (latest: v1.6.0)
[INFO] [stderr]       Adding mio v0.7.14 (latest: v0.8.11)
[INFO] [stderr]       Adding miow v0.3.7 (latest: v0.6.0)
[INFO] [stderr]       Adding ntapi v0.3.7 (latest: v0.4.1)
[INFO] [stderr]       Adding parking_lot v0.11.2 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.8.6 (latest: v0.9.9)
[INFO] [stderr]       Adding pin-project-lite v0.1.12 (latest: v0.2.14)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding tokio v0.3.7 (latest: v1.37.0)
[INFO] [stderr]       Adding tokio-macros v0.3.2 (latest: v2.2.0)
[INFO] [stderr]       Adding tokio-util v0.4.0 (latest: v0.7.10)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 512232cca3fd915e50e2737c7038cbe094b2c360bd586a356e4d40637f014b8b
[INFO] running `Command { std: "docker" "start" "-a" "512232cca3fd915e50e2737c7038cbe094b2c360bd586a356e4d40637f014b8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "512232cca3fd915e50e2737c7038cbe094b2c360bd586a356e4d40637f014b8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512232cca3fd915e50e2737c7038cbe094b2c360bd586a356e4d40637f014b8b", kill_on_drop: false }`
[INFO] [stdout] 512232cca3fd915e50e2737c7038cbe094b2c360bd586a356e4d40637f014b8b
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d41cfe66a60c95f1053793bf2f8ceb9466df736bda5dcb3cd674243f78bcb15
[INFO] running `Command { std: "docker" "start" "-a" "6d41cfe66a60c95f1053793bf2f8ceb9466df736bda5dcb3cd674243f78bcb15", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling tokio v0.3.7
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]    Compiling tokio-macros v0.3.2
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking sedregex v0.2.5
[INFO] [stderr]     Checking streamson-lib v7.1.0
[INFO] [stderr]     Checking tokio-util v0.4.0
[INFO] [stderr]     Checking streamson-tokio v7.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.94s
[INFO] running `Command { std: "docker" "inspect" "6d41cfe66a60c95f1053793bf2f8ceb9466df736bda5dcb3cd674243f78bcb15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d41cfe66a60c95f1053793bf2f8ceb9466df736bda5dcb3cd674243f78bcb15", kill_on_drop: false }`
[INFO] [stdout] 6d41cfe66a60c95f1053793bf2f8ceb9466df736bda5dcb3cd674243f78bcb15