[INFO] fetching crate arcon_build 0.2.0...
[INFO] checking arcon_build-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate arcon_build 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate arcon_build 0.2.0 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 arcon_build 0.2.0
[INFO] finished tweaking crates.io crate arcon_build 0.2.0
[INFO] tweaked toml for crates.io crate arcon_build 0.2.0 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 40 packages
[INFO] [stderr]       Adding bytes v0.5.6 (latest: v1.6.0)
[INFO] [stderr]       Adding fixedbitset v0.2.0 (latest: v0.5.6)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.8.2 (latest: v0.12.1)
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding multimap v0.8.3 (latest: v0.10.0)
[INFO] [stderr]       Adding petgraph v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding prost v0.6.1 (latest: v0.12.4)
[INFO] [stderr]       Adding prost-build v0.6.1 (latest: v0.12.4)
[INFO] [stderr]       Adding prost-derive v0.6.1 (latest: v0.12.4)
[INFO] [stderr]       Adding prost-types v0.6.1 (latest: v0.12.4)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding which v3.1.1 (latest: v6.0.1)
[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 fixedbitset v0.2.0
[INFO] [stderr]   Downloaded prost-derive v0.6.1
[INFO] [stderr]   Downloaded which v3.1.1
[INFO] [stderr]   Downloaded prost v0.6.1
[INFO] [stderr]   Downloaded prost-types v0.6.1
[INFO] [stderr]   Downloaded multimap v0.8.3
[INFO] [stderr]   Downloaded itertools v0.8.2
[INFO] [stderr]   Downloaded petgraph v0.5.1
[INFO] [stderr]   Downloaded prost-build v0.6.1
[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] c1d3d91f381ff49a254a9d8f98d76b7c4aa474b561e6540d119c0237660c68ad
[INFO] running `Command { std: "docker" "start" "-a" "c1d3d91f381ff49a254a9d8f98d76b7c4aa474b561e6540d119c0237660c68ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1d3d91f381ff49a254a9d8f98d76b7c4aa474b561e6540d119c0237660c68ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1d3d91f381ff49a254a9d8f98d76b7c4aa474b561e6540d119c0237660c68ad", kill_on_drop: false }`
[INFO] [stdout] c1d3d91f381ff49a254a9d8f98d76b7c4aa474b561e6540d119c0237660c68ad
[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] e30bf3fc8489a9f623bfe08dbbb6fa84e2f763bcc3913ab088e823f2d23b88df
[INFO] running `Command { std: "docker" "start" "-a" "e30bf3fc8489a9f623bfe08dbbb6fa84e2f763bcc3913ab088e823f2d23b88df", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking multimap v0.8.3
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking prost v0.6.1
[INFO] [stderr]     Checking prost-types v0.6.1
[INFO] [stderr]     Checking arcon_build v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.45s
[INFO] running `Command { std: "docker" "inspect" "e30bf3fc8489a9f623bfe08dbbb6fa84e2f763bcc3913ab088e823f2d23b88df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e30bf3fc8489a9f623bfe08dbbb6fa84e2f763bcc3913ab088e823f2d23b88df", kill_on_drop: false }`
[INFO] [stdout] e30bf3fc8489a9f623bfe08dbbb6fa84e2f763bcc3913ab088e823f2d23b88df
[INFO] checking arcon_build-0.2.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate arcon_build 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate arcon_build 0.2.0 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 arcon_build 0.2.0
[INFO] finished tweaking crates.io crate arcon_build 0.2.0
[INFO] tweaked toml for crates.io crate arcon_build 0.2.0 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 40 packages
[INFO] [stderr]       Adding bytes v0.5.6 (latest: v1.6.0)
[INFO] [stderr]       Adding fixedbitset v0.2.0 (latest: v0.5.6)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.8.2 (latest: v0.12.1)
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding multimap v0.8.3 (latest: v0.10.0)
[INFO] [stderr]       Adding petgraph v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding prost v0.6.1 (latest: v0.12.4)
[INFO] [stderr]       Adding prost-build v0.6.1 (latest: v0.12.4)
[INFO] [stderr]       Adding prost-derive v0.6.1 (latest: v0.12.4)
[INFO] [stderr]       Adding prost-types v0.6.1 (latest: v0.12.4)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding which v3.1.1 (latest: v6.0.1)
[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] 818462af7537c73afec52562aa6682ed8f380b9dff89c7d657e052becf3b51b6
[INFO] running `Command { std: "docker" "start" "-a" "818462af7537c73afec52562aa6682ed8f380b9dff89c7d657e052becf3b51b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "818462af7537c73afec52562aa6682ed8f380b9dff89c7d657e052becf3b51b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "818462af7537c73afec52562aa6682ed8f380b9dff89c7d657e052becf3b51b6", kill_on_drop: false }`
[INFO] [stdout] 818462af7537c73afec52562aa6682ed8f380b9dff89c7d657e052becf3b51b6
[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] 2d3923bb7637e6aa578d0a80cd22795acb7df774322082cb7204858795c96397
[INFO] running `Command { std: "docker" "start" "-a" "2d3923bb7637e6aa578d0a80cd22795acb7df774322082cb7204858795c96397", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking multimap v0.8.3
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]     Checking prost v0.6.1
[INFO] [stderr]     Checking prost-types v0.6.1
[INFO] [stderr]     Checking arcon_build v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.77s
[INFO] running `Command { std: "docker" "inspect" "2d3923bb7637e6aa578d0a80cd22795acb7df774322082cb7204858795c96397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d3923bb7637e6aa578d0a80cd22795acb7df774322082cb7204858795c96397", kill_on_drop: false }`
[INFO] [stdout] 2d3923bb7637e6aa578d0a80cd22795acb7df774322082cb7204858795c96397